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Coastal Management - Science topic

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Dear All,
I have an issue regarding a sediment transportation simulation. I have computed the sediment transport rate based on a 20 years wave climate, and simulated the sediment drift for the total time span and either by monthly filtering of the data, the monthly sediment transport is also computed. However there is a problem that the summation of monthly sediment transport is much more than what I have calculated for the total time span. Is it possible this happening? Is there any reason behind this?
I appreciate it if you could share your Idea with me.
Best
Saeideh
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There are several potential reasons, which are hard to distinguish based on what you've written. However, the 'obvious' answer is that sediment transport is ALWAYS a timescale-dependent parameter. The cumulative answer will always be larger the shorter the timescale you are applying it to. This was discussed in some seminal papers like de Vriend et al (1991) and Cowell et al (2003), along with some discussion by Pilkey. For a 'light version' try Gallop et al (2015). It is one of the concepts behind 'morphological' parameters.
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  • I am trying to use the DSAS tool (version 5) for both ArcMap 10.4.1. and ArcMap 10.8 in Windows 10. I am able to output the transects, but when it comes to trying to calculate the statistic. I get an error message telling me to reference the DSAS_log (photo attached) (which does not provide a clear solution of what the error is). I wonder how to solve this problem? I have tried to re-create the baseline multiple times and am getting the same error for both two versions of ArcMap (10.4 &10.8). Knwoing that I followed the Guide and I am using (English US and mm/dd/yyyy format).
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I had the same problem and solved it by working on preprocessing. My steps were: Digitize the shorelines (with a fixed zoom scale) and create a baseline on the mainland, you may have to create both on the mainland and on the water (depending on our region). You must use shapefiles in the same coordinate system, and must be based on meters (UTM). In the case of your shorelines had been digitalized in different shapefiles, use the "Merge" tool to join all shorelines in one shapefile. In ArcCatalog, click with the right bottom in the folder you want to put your geodatabase, so go to "New" and in "Personal Geodatabase". After that, with a double click in the archive just created, click with the right bottom in the space of it, and go to "Import" to put there two shapefiles, one with your shorelines and other with the baseline(s).
Some classes and their types are required, so you should check if your shapefiles have:
- Baseline:
--> User created: id (Long Integer)
--> Created by DSAS through Attribute Automator: SHAPE_Length (Double), DSAS_ID (Long Integer)
- Coast:
--> User created: id (Long Integer), Uncy (Double), Date_ (Text).
--> Created by DSAS via Attribute Automator: DSAS_date (text), DSAS_uncy (Double), DSAS_type (text)
I leave the uncertainty field (Uncy) empty and DSAS defaults to 10 meters in this case. After that, I used the DSAS video (https://www.usgs.gov/media/videos/introduction-dsas-v50-sample-data-workflow) as a guide.
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Littoral zone is wider than coastal zone, while second is a physical concept, littoral is also understood as social and economic. Which criteria could we use to draw the limits of littoral zone?
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This is a good question.
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I am trying to run a coupled model (HD and SW MIKE 21), for a one year period (8760 time steps; 3600 time step interval). However, after approx 200 time steps there is an Abnormal Run error, 'Blow-Up wave height too large'. What are some reasons that would cause this, and some solutions?
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Ariel Mohan Aesthetics in cities are not merely a matter of taste, but something that is linked to culture and what is most noble in a community. It reflects a world of meaning about that space and the people who occupy it, in addition to maintaining order and a sense of transcendence. Urban aesthetics is a way to exalt this world of meaning and express the ideals and values of a people. It is not a question of preserving the traditional because it is old, but of preserving the past due to its importance and beauty. Beauty is a spiritual good and, as a spiritual good, it is part of who we are. I recommend reading the attached text.
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I want to publish my review paper in any reputed journal, but the time duration is less. Are there any free journals available to publish with in 2 months? Otherwise can you list trustworthy paid journals?
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some journals are free, published by Elsevier.
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I want to predict shoreline change in the future by the results or data of DSAS software. Could you please give me any advice? 
Thanks so much!
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there are many mathematical and model based methods are available for shoreline prediction.
the one of the simple method is given below
Future Shoreline Change = Slope * Time interval + Intercept
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Coastal management is a topic that has been much debated around the world in the last two decades, in view of the need to organize our coastal areas. In view of this context, I ask if the countries of South America present governmental programs of Coastal Management.
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Hi Fabio
Could be this information help you about Colombia: Ley 1450 de 2011, decreto 1120 del 31 de mayo de 2013: http://www.minambiente.gov.co/index.php/component/content/article/116-ordenamiento-manejo-integrado-costero-y-marino
Best regards.
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Hello everyone,
I work with the digital shoreline analysis system (DSAS of USGS) to my thesis, in the process i have a error with the calculate change statistics. The program say: "Unable to find output file 'C:\Users\...DSASCore.out.xml'
Does anyone know what the solution is?
Thanks!
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Thank you Jan Kinne and Federico Solano the error was very simple to solve. In the guide to program appears the solution.
"The computer must be configured to English (USA) and the date format must be mm/dd/yyyy. From the Control Panel menu, choose 'Regional Configuration and Language'> select 'English (USA)' and modify the date configuration to 'mm/dd/yyyy.'"...
Thanks for answering my question.
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I am conducting an investigation on the impact of heavy sands mining on human rights.
A mining company in northern Mozambique started mining on coastal sand dunes. The sand dunes are located between the sea in the east and a wetland in the west. There is a rural community standing on the sand dunes. In other words, the community is sandwiched between the sea and the wetland. Besides sea fishing, the community depends on the wetland's ecological services for survival.
The mining company began to dump mine sands on the wetland. This practice blocked natural water channels in the wetland; blocked the natural water channel that connected the wetland to the sea; and filled up a large part of the wetland with mine sand (reducing the wetland's water carrying capacity). This continued until the mining operation were now adjacent to the community -- about 200 meters away from the community.
When the rains came, the water could no longer flow into the sea and instead became trapped in the wetland. Eventually the water opened a channel to the sea through the middle of the village, destroying houses and property in its way. 
My questions are:
1. What are the industry standards for heavy sands mining and how would they be applicable in this case?
2. What are the health risks associate with heavy sands mining for adjacent communities.
Thank you,
David
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Part of my answer did not go.  Due sampling and tests if there is some reason that sands or geology exposed has health risk pollutants.  An EIS or similar analysis before operations could have helped consider the effects as well as concerns for all involved, with some professional analyses to help identify and limit effects.  I would assume most places have some common laws that allow for damage recovery, and in some instances, avoiding damages is a way to get industry to consider reasonable BMPs or mitigation measures.  Those poor communities in rural areas who may not be aware of their rights are in some instances most susceptable to being impacted.  Many societies do recognize in laws and regulations the importance of coastal ecosystems for many resources and critical habitats beyond those mentioned.
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Is there any research or innovation related to storm water drainage for coastal urban areas? Generally pumping is used for effective drainage of low-lying coastal areas/towns. Can there be any other way? 
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An innovative blue/green strategy that might be of interest is identified in my report p. 38-39  - this maybe of interest 
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Currently we are working in this field, applying the model of evolution proposed by Hoyle (1989) in ports of Argentina and the south of Brazil, and also adapting the model of Ducruet (2005) for its validation in Argentine port-cities. Although we have found similar studies in ports of Asia and Europe, it's been difficult to find other experiences in the region. Also, published papers in portuguese would be appreciated.
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Hello,
I do not know if these models are being applied, but in Argentina there is a group that studies these relationships. For example, Miguel Angel de Marco (h), of Rosario.
In Google there are works some of his works
Best regards
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I want to do a new research by using remote sensing and GIS with oil (identifying, detecting, or any other application?
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does anybody know where i can collect infrastructure systems (power systems) recovery data (after extreme disaster)? such as power systems recovery process after cascading blackout
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 Thank you so much. All the best for you.
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Much of the water originates around these Himalayan mountains on earth, a region often called “the third pole” because of its immense concentration of snow and ice, the largest outside the Arctic and Antarctic. Protecting these Himalayas surface water resources requires a diagnosis of threat over a broad range. 
Can you please suggest me the main concern problems and how to develop strategies for their sustainable development and water security.
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Several papers are published about the Blue Flag (BF) eco-label program. Many of them criticize it, mainly because BF reduce ecosystem health of beaches and dunes or because it is not really understood by tourist. At the other side, many researchers and the organizations promoting BF highlight its benefits to improve beach quality, with focus in water quality and environmental awareness.
Within these two perspectives, are Blue Flag eco-label god or bad for beach quality (sanitary, ecosystem and recreation)?
Two papers I recommend to read, in order to contextualize question:
Botero, C., Pereira, C., Tosic, M., Manjarrez, G. 2015. Design of an index for monitoring the environmental quality of tourist beaches from a holistic approach. Ocean & Coastal Management 108: 65-73 DOI 10.1016/j.ocecoaman.2014.07.017 ISSN 0964-5691
Zielinski, S. Botero, C. 2015. Are eco-labels sustainable? Beach certification schemes in Latin America and the Caribbean. Journal of Sustainable Tourism 23:(10) 1550-1572. DOI: 10.1080/09669582.2015.1047376
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Hi Camilo¡
The BF tries to justify environmental quality, even when these areas have long lost their geomorphological and ecologic features
the beaches are not characterized for their naturalness; instead they show high levels of human influence and artificialization,  there is a lot of services for the bathers, but no real management and conservation of these fragile coastal systems.
The concession of Blue Flag award is strictly focused on services offered to the users of the beach, and they do not take in account environmental and ecological issues related to the behavior of beaches as natural and fragile systems
These kinds of awards should not be sold as eco-labels, but as quality labels of
services offered to the bathers in artificial and urban beaches
There is a paper related to spanish blue flag could be interesting to you: 
M. Mir-Gual, G.X. Pons*, J.A. Martín-Prieto, A. Rodríguez-Perea (2015): A critical view of the Blue Flag beaches in Spain using environmental variables. Ocean & Coastal Management 105: 106-115
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I am beginning research into examining anticipated changes to beach availability and sea lion habitat from climate change impacts  that might assist in predictive coastal management to reduce human/animal conflicts and support rescue networks on the coast of California. I cannot find any published research on the various search engines and was wondering if there are studies that have happened but not published or happening concurrently. 
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Do you know these bilingual publications of Russian scientists - "Marine Mammals of the Holarctic"? 2002 - http://www.2mn.org/engl/bookshelf_en/mmh2_book_en.htm  2004 - http://www.2mn.org/engl/bookshelf_en/mmh3_book_en.htm ... 2014 - http://www.2mn.org/downloads/bookshelf/mmh8_vol1.pdf and http://www.2mn.org/downloads/bookshelf/mmh8_vol2.pdf , and others from http://www.2mn.org/engl/ I am sure that you could find a lot of interesting information there. 
Another useful publication is by Burkanov, V.N. and Loughlin, T.R., Distribution and Abundance of Steller Sea Lions, Eumetopias jubatus, on the Asian Coast, 1720’s–2005, Mar. Fish. Rev., 2005, vol. 67, no. 2, pp. 1–62.
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Abundance, number of species and diversity
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Very interesting question. The bottom current has an effect on detrital input which in turn, may influence the feeding activities of macrobenthic polychaete community.
The following references may help you more.
Regards.
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Dear All
I am working on numerical simulation of morphological changes in  behind submerged breakwaters. At the present stage I need a set of useful experimental or field data, which could be used for validating the numerical model (in my case, DELFT3D).However, in spite of extensive search for such data, I could not find anything except some studies on emerged breakwaters. 
Does anybody know where can I find such data?
In case no such data is available, what is the best approach for model validation?
Kind Regards
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Hi Moin, please check Ranasinghe and Sato (2007) - Beach morphology behind single impermeable submerged breakwater under obliquely incident waves,” Coastal Engineering Journal 49 (1), 1-24 for some data from small-scale physical models. I think should be good enough for model validation.
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Methodologies that I have encountered thus far are 1). Ultrasonic sensors, 2) Hi-Res sonar, 3) Optical backscatter arrays (e.g., Sedimeter) and photovoltaic arrays (PEEP sensor), 4) Green-laser altimeters, 5) Load cells. 
Do you know of other novel techniques that can measure fine-scale sedimentation in the offshore environment? Any favorite commercially-available instruments?
Thanks!
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Before you even start to develop an instrument to measure the bed level you have to ask yourself, "How do I define the bed level?". What is "the bottom"? Sometimes it is very clear, but at other times what visually is the bottom is not what one would define as the bottom if probing with a stick. Fluid mud looks like the bottom but a diver can swim through it. Second, for what purpose do you need to know the bottom level? The SediMeter was developed to detect sediment transport. If the sediment transport takes place through migrating bed forms the resolution does not have to be that high, or if there is net accumulation or net erosion. But if the sediment transport takes place as sheet transport, bedload over a flat bed that does not change level, then the instrument needs to be able to detect very small changes. If it can detect the addition or removal of a single grain of sediment, then it for sure has sufficient resolution. As far as I know, only the SediMeter is capable of doing that, and that was the original purpose of me developing it 31 years ago.
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Except CVI.
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The Coastal Vulnerability Index (CVI) is one of the most commonly used and simple methods to assess coastal vulnerability to sea level rise, in particular due to erosion and/or inundation (Gornitz et al., 1991).
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Kite Aerial Photography (KAP) has so many advantages that they are at least as suitable as UAVs for monitoring coastal dynamics.
Think about it, kites are:
  1. less regulated, which means higher altitudes thus wider footprints
  2. extremely inexpensive and portable
  3. non-intrusive, licensing-free
  4. wind-friendly, the more wind the more payload, thus, more sensors (RGB camera, micro-Lidar, Multispectral sensors, IMUs, GPS)
  5. less stable than UAVs, which is good for Structure from Motion algorithms because the same point is seen in diferent angles and scales and more off-nadir images means less doming effect
Obviously zero wind means no kites.But coastal areas are windy by nature.
Moreover, if you set target points, record accurate location (dGPS), then use the targets network to orthorectify the KAP imagery, Structure from Motion algorithms produce DSMs and Orthoimages as good as UAVs.
One of the most important coastal issue that has been tackled with a KAP  approach received international attention in the 2014, when it was used for the worldwide famous Dutch project “Zandmotor”.
The point is:
Help me find at least 5 robust arguments that can refrain kites from being the next coastal monitoring tool.
Especially in Least Developed Countries or in Pacific Coutries where low-lying atolls are drowning and UAVs or fine resolution satellite imagery are just too expensive to use.
Cheers,
Nic
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Kite are already used for coastal monitoring. You are right, it is an inexpensive method. However, I agree with the previous comment: they are difficult to control and sometimes crash. And if developping, this activity might be regulated.
Coastal monitoring is not only beach monitoring... What about cliffs ?  You can pilot a drone from the top of the cliff, the drone flying at lower altitude than you. This is not possible with a kite.
Moreover, some beaches are surrounding by cliffs and therefore the flight plan of the kite may be restricted...
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Hello.
I want to calculate the CVI along a coast. I have all the data needed. What troubles me is how to calculate the slope near the coast. The easy way is just to create a DEM and then use this to assign a value to a polyline representing the coast with multiple segments.
However if i do this, i take into account only the nearest cell of the slope Raster to the coast..
If i have pixel size of 5 m since i am working with maps of 1:5000 scale i think this is too narrow and not that representive of the whole beach slope..
Maybe it is a better way if i just measure the distance to the contour of 1 or  meters and then calculate the slope that will be assigned to the polyline representing the coast?
What do you think?
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In my remember the coastal slope concern the inland behind the dune. Because CVI is sea level rise impact oriented, the slope is supposed to take into account the ability of the sea level to submerge the coastal zone. This is the reaseon why cliffs are considered as "safe" to sea level rise and barrriers, salt marshes, deltas... are potentially "very sensitive risk".
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I have 10 U and V component wind data, retrieved from ECMWF era-interim reanalysis data. I know how to calculate magnitude and direction of wind from U and V component. I don't know the way to do for all positions.
Please give your valuable comments.
Thanks in advance
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Hi vasudevan
This can be done in many ways according to your choice of platform or software.
Data visualisation and analysis tools like Ferret, Matlab,cdo etc  will do your needs.
sample script in matlab to do it : modify according to ur need
s=dir('filename.nc')  %%% load ur files
nc_dump(s(1).name) %% see the description of variables
lat=nc_varget(s(1).name,'lat'); %% change the varible name as in ur file
lon=nc_varget(s(1).name,'lon');
uwnd=nc_varget(s(1).name,'u10');
vwnd=nc_varget(s(1).name,'v10')
windspeed=sqrt(u.^2+v.^2);
(PLZ  note For matlab  sometimes u may need SNCTOOLS for carrying out the analysis with netcdf files : http://mexcdf.sourceforge.net/ )
best regards
shanas
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Bottom-up,  Top-down, management, Hegarty (1997), lagoon management
Does bottom- up approach in coastal lagoon management ensure proper utilization and management of lagoon resources?
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Thanks Pedro for your comprehensive contribution to the discussion.
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Are there any limitations existing for the coastal states in its appliance of domestic legal sources?
e.g: Is it possible for states to apply "ordinance",ect., in dealing with certain issues when "law and regulations" are absent for this?
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It is important to definite “the law and rules of coastal states”, because foreign ships shall comply with all such laws and regulations of coastal states (21(4)), then you should have information about every zone. The laws and regulations of coastal states are depending on the zone. The coastal states have sovereignty over internal water and territorial sea, their sovereignty extend to airspace as well as to bed and subsoil. (art 2(2)), so their authority to enact laws are more than another zones, while they have sovereign right over EEZ & continental zone(rights of coastal state in this zone are exclusive), so their authority are limiter than internal water and territorial sea(part V,VI), but in some cases, their authority are extended and it depends on circumstances, like Persian gulf.
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Thanks in advance for your replies.
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Sorry, I cannot comment on this point.
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I am doing a research on marine debris stranded on coastal beach in relation to shipborne garbage.. The only reference i obtain is by Horsman, 1982.
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How much water level fluctuation can occur near coastal zone?
If the water level variation is nearer to 20 m what can be cause?
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It depends what is the time-frame you are interested in.... isostasy, seismic activity....etc.
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Integrated Coastal Management (ICM) is considered as a governance process by Olsen, Lowry and Tobey (1999) and by Olsen and Nickerson (2003). However I realize and support the criterion that “Integrated Coastal Zone Management” (ICZM) is limited to a management process, not specifically a governance one. Governance addresses the values, policies, laws and institutions by which a set of issues are addressed (Olsen, 2003).
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Good discussion! I understand that ICZM also involves policies, laws and institutions, but I think that it would be convenient to differentiate when a relevant government instance leads coastal management (ICM) from when government simply participates and support, coastal management (ICZM). Discussing what mean area or zone in Spanish and English, is indeed another interesting subject, but I am focusing in coastal management processes. I suggest that there are  two distinct processes that should be considered separate.
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As distinct from State/local council policy & guidelines & theoretical modelling  for climate change and coastal recession,I am interested in looking at adaptive or barrier based models specific to identified "at risk" locations on the Western Victorian Coastline. Sandy beach front communities in particular with minimal land area for urban expansion.  
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Hi David, - Risk models and vulnerability assessments and work on the Western Victorian coastline is quite limited, perhaps considering looking at the latest Victorian Coastal Strategy 2014, and the Victorian Coastal Hazard Assessment 2012 for relative citations on coastal process modelling. Hydrology and geomorphology models could assist. 
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I am trying to find information or examples of beach nourishment in macro tidal areas. Mainly, I want to have an idea of the challenges faced when dealing with these kind of designs.
In the areas I'm looking at (6 m tidal range, 5 - 50 km fetch, no swell, low gradient profile), medium to fine sand is found only in the subtidal and supratidal region, with the intertidal region composed mainly by gravel. This might point to the use of hard engineering methods as well.
Any help is appreciated.
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Juan Carlos,
There is excellent experience in the UK with beach replenishment in macro-tidal ranges - especially gravel beach replenishment. The CIRIA Beach Management Manual (2010) is perhaps the "go to" information source for our practitioners when considering a potential scheme. It was free to download for those registering onto CIRIA's website back in 2010/11 when it was published. From what I can see the free download has been discontinued. Do try to see if you can find a free download from CIRIA, but if not a wider web search for a download of the manual might be productive. This manual is absolutely excellent and I really cannot recommend it strongly enough - its vital for all applied coastal scientists working in macro- and meso- tidal environments!
I estimate the challenges involved with beach replenishment in macro-tidal environments as follows:
1. Potentially large quantities of recharge sediments would be required to cover the long cross-shore profiles. This is a key issue with sand recharge as beach gradients are lower and profiles are longer. A second related problem is that its very difficult to control longshore transport losses using groynes as the long profiles mean that groynes would need to be uneconomically long and high. A successful scheme I know in this category is the "Lincshore" replenishment on the Lincolnshore coast (tidal range 5 to 7m). Its a very large and expensive scheme that has involved several cycles of replenishment, but it is seen as sustainable as the beach performs very important coastal defence and amenity functions and there are appropriate sources of marine dredged sand available. a paper can be downloaded from the following link: 
At Blackpool  (8m tidal range) the UKs largest coastal resort town has been protected by a major new sea wall rather than a replenishment scheme due to concerns about the quantity of replenishment sand required and its potential stability on the beach if constructed. 
2. There are concerns of offshore loss of replenished sediments in areas with high tidal range. Risks are lessened in the case of your beaches since the short fetches mean lesser exposure to high storm waves. However, there are also risks of sediment loss due to tidal currents if there are any tidal channels or fast flowing currents near to the toes of your beaches.
A solution would be to consider gravel rather than sand replenishment as gravel is preferentially retained on the upper portion of the beach profile and is less easily transported seaward during storms - also it generates steeper and shorter profiles. It does however remain susceptible to losses if there are tidal channels adjacent to the toes of your beaches. Best practice is to try to source replenishment sediment that is on average a little coarser than the indigenous gravel at your beach. Its OK if there are some finer sediments incorporated, but large quantities of intermixed sand are not recommended as it can significantly reduce beach porosity and hence increase risks of offshore losses in the early stages before the replenished beach can become naturally sorted. If there is significant drift on your beaches then you may wish to consider using short rock groynes to control the upper beach. Another possibility could be to use a longer terminal groyne at the downdrift end of a beach to collect drifting gravel and then excavate and truck it back updrift and reintroduce it to the beach (recycling). Good beach monitoring is required to optimise such management operations.
If appropriate sources of gravel for replenishment are not available reasonably close to your intended scheme sites then you may wish to consider a sea wall and/or rock revetment scheme. If your beaches are heavily depleted be aware of the potential problem of wave reflection and toe scour that can be caused by constructing sea walls on such beaches.
I hope the information is useful and I wish you success in your feasibility studies.
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The mangroves play a very important role in stabilizing the fragile coastal regions of our planet. What can be done to avoid the depletion of the precious mangroves?
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Broadly three main strategies are possible:
1) More effective land use planning to conserve existing areas of mangrove and prevent their conversion to agriculture, shrimp farming or development. Enabling mechanisms could involve protected area designations, local community participation/empowerment and greater recognition of the protective properties of mangroves against storm surges and tsunami;
2) Improved consideration of the long term effects of dams and flow regulation on rivers that can greatly affect the input of sediments to many mangrove coasts. While it is not easy to de-engineer large river catchments it is important to know whether sediment shortage is a factor that could be addressed through improved sediment conservation measures within eroding mangrove zones;
3) Carefully targetted mangrove restoration. Technical capability and experience is improving in this area - see the following links: http://www.mangroverestoration.com/  http://mangroveactionproject.org/  Benefits can include: conservation, fisheries and improved protection against storm surges and tsunami.
Internet searches for the following search terms should be be useful: "mangrove restoration" "Mangrove" AND "shrimp farming"
I wish you success with mangrove conservation.
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Community based management
Co-management
Ecosystem based management
Explain briefly if you select an option
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The first option is of course  community based co management. To implement the Ecosystem approach one has to prepare a platform for creating awareness among the coastal community regarding scientific facts.  A linkage of scientific and local governance will actually lead to coastal management. 
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I'm trying to detect maximum run up occured during nigth from a coastal video monitoring system. Attached is typical image where soil moisture difference is quite obvious, some times is not that much. 
Any suggestions are welcome
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Take in mind that water strongly decreases its reflectance when move to the Infrared. If it is not possible for you take NIR or SWIR images, tray at last to “play” with the Red region of the spectrum.  
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I am looking for as many case studies as possible which showcase government/community efforts to invest in marine and coastal ecosystems as economic infrastructure. In other words, spending financial resources to enhance or restore these ecosystems. Case studies from developing countries in particular would be much appreciated! 
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Check out the Coastal Wetland Planning Protection and Restoration Act Task Force, which is made up of 5 U.S. Federal Governmental Agencies and one U.S. State (Louisiana).  The projects restore coastal wetlands, which are known to be economcally important because they support fish and wildlife species that are harvested by humans.  An overview is available at http://lacoast.gov/new/About/ ; a list of projects constructed to date is at http://lacoast.gov/new/Projects/List.aspx.
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I am trying to assess the Socio-economic relationship with coastal sciences for better prediction and management of coastal zones.
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Dear Lingaraj
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Please compare the strengths as well as limitations of these two models. Also the answer should consider the recent advancement as far as possible in both the models.
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One of the other possible answer could be that Boussinesq equation can model nonlinear waves but Mildslope equations can model only linear waves.
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I'm looking for methods to make measurements of sediments transport close to sea bottom along shore from different direction. I'm looking for simple sediment traps which are used to measure such horizontal transport.
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You can find a brief description of varius methodologies in :
Balouin.Y., Howa.H., Pedreros.R., Michel.D. (2005) Longshore sediment movements from tracers and models, Praia de Faro, South Portugal., Journal of Coastal Research, Vol. 21, n°1, pp. 146-156.
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The shore protection manual (USACE, 1984) recommends a value of K = 0.39 that was derived from the original field study by Komar and Inman (1970) using tracers. In recent studies, (Schoonees and Theron, 1993) and (Schoonees and Theron, 1996) the 46 most reliable of the 240 existing field measurements that have been compiled to determine a K-value of approximately 0.2 were re-examined. Is there any study for calculation of K carried out so for ?
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Hi Sisir,
In Mil Homens et al. (2013) you will find an improved new formulation to calculate k.
Mil-Homens J. , Ranasinghe R. , van Thiel de Vries J.S.M. , Stive M.J.F. 2013 Re-evaluation and improvement of three commonly used bulk longshore sediment transport formulas, Coastal Engineering 75, 29-39
Cheers
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In the coming year, are there any comference calling for abstracts focusing on ecosystem services, or coastal/marine planning and management?
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Hi Ruiqian
Try this link http://marineecosystemservices.org/calendar and there's also a very useful portal on the same website that I often refer to their library of valuation studies around the world in coastal and marine ecosystems http://www.marineecosystemservices.org/explore
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Can anyone suggest some methods to be implemented for an indicator based monitoring of coastal ecosystems? Can anyone also suggest articles?
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If that is a soft-bottom intertidal, you can use approaches like AMBI and M-AMBI (look at many papers in my profile). If that is a rocky shore, you can find a method in my profile (Diez et al., 2012), for macroalgae. For fauna, you need to use multivariate methods, using software like PRIMER or CANOCO, using biotic and abiotic variables
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I have a series of depth-damage functions to estimate damages caused by river flooding. I would like to use these functions as proxy to assess coastal flood damages. We know that damages caused by salt-water will be higher (due to salt content, intrusive water, soil quality lost, etc.). I am looking for specific figures relating damages caused by river and coastal flooding.
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Rodrigo, there are two software packages that I'm aware of in the United States that are used for flood damage cost estimation. They are the Federal Emergency Management Agency (FEMA) Hazus software (http://www.fema.gov/hazus) and the U.S. Army Corps HEC-FIA (Flood Impact Analysis; http://www.hec.usace.army.mil/software/hec-fia/). Typically they take GIS-based property valuation data from local communities along with local topographic data and standard depth-damage curves to estimate flood costs. Perhaps looking into these models may help with your questions.