Meriam Makinano-Santillan

Meriam Makinano-Santillan
Caraga State University | CSU · Engineering Sciences Department

MS Remote Sensing

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51
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342
Citations

Publications

Publications (51)
Conference Paper
Full-text available
MInDSEt, or the Mindanao Integrated Data Sharing Environment, is an online geospatial data and information sharing facility/geospatial data infrastructure established in Caraga State University, Philippines. MInDSEt was developed using Geoserver for data storage and OGC services, and Geonode for data cataloguing and visualization. It was originally...
Conference Paper
Full-text available
The Caraga Region in Mindanao, Philippines, is considered a significant contributor in log production, specifically due to Falcata (Paraserianthes falcataria) plantations. Over 80% of the country's Falcata log production came from Caraga Region in 2019. Among the challenges faced by the tree-growers is finding a suitable location for the establishm...
Technical Report
Full-text available
This project aimed to develop a geodatabase of Industrial Tree Plantations (ITPs) in Caraga Region using Remote Sensing (RS) and Geographic Information System (GIS). The geodatabase is expected to aid in the characterization of ITPs in terms of their types, locations, spatial arrangements, and total area. It also aims to provide a form of documenta...
Conference Paper
Full-text available
Above ground biomass (AGB) of mangroves is considered as an important ecological and habitat management indicator of various environmental conditions and processes in mangrove ecosystems. In this study, Sentinel-1 images were used to model and estimate AGB of mangroves in Del Carmen, Siargao Islands, Philippines. There were three predictor variable...
Conference Paper
Full-text available
Access to near-real time information on the spatial distribution and detailed characteristics of the current and future (forecasted) flood scenarios is crucial for effective flood forecasting and early warning, especially when formulating decisions related to evacuation and response before, during, and after a flood scenario. In this paper, we pres...
Article
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In mitigating and helping lessen the possible effects and damages of disaster to the communities, the transmission of information or end products derived from remote sensing and other multidisciplinary technologies into the community should be immediate, accessible and comprehensive to aid in better planning and decision-making procedures. In this...
Article
Full-text available
Changes in land cover can have negative impacts on the hydrological and hydraulic processes in river basins and watersheds such as increase in surface runoff and peak flows, and greater incidence, risk and vulnerability of flooding. In this study, the impacts of land-cover changes to the hydrologic and hydraulic behaviours of the Agusan River Basin...
Article
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We assessed the vertical accuracies and uncertainties of three freely-available global DEMs as inputs to elevation-based sea-level rise vulnerability assessment of Mindanao, Philippines – an area where above average SLR of 14.7 mm/year was recently found. These DEMs are the Shuttle Radar Topography Mission (SRTM) DEM, ASTER Global DEM (GDEM Version...
Technical Report
Full-text available
The Phil-LiDAR 1.B.14 Project, or simply known as the "CSU Phil-LiDAR 1 Project" is a three-year project implemented in April 1, 2014 by the Caraga State University through the Caraga Center for Geo-informatics of the College of Engineering & Information Technology, in Ampayon, Butuan City, Mindanao, Philippines. It is one of several projects under...
Chapter
Full-text available
According to the literature, the center of sago palm diversity is in New Guinea and the Moluccas; and from the center, the number of sago palm varieties decreases towards the Mentawei Islands, Southern Thailand, Southern Philippines, and Oceania. Previous rough estimates of total area of sago palm stands in the Philippines is at 3000 ha. Using data...
Chapter
Full-text available
To our knowledge, our work is the first of its kind to apply a habitat suitability modeling approach to map areas suitable for mass propagation of sago palms in the Visayas and Mindanao, which is important if the Philippines is keen on establishing a large-scale sago starch industry in the country. We first conducted characterization of biophysical...
Conference Paper
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This paper proposes the integrated use of LiDAR data and 1D-2D flood simulation models for assessing the effectiveness of existing and proposed flood control structures under extreme/climate change-induced rainfall scenarios. A thorough assessment of existing flood control structures is critical to determine whether these structures (as originally...
Conference Paper
Full-text available
In this paper, we characterize the flood hazards in an alluvial fan in Asiga Watershed in Agusan del Norte, Mindanao, Philippines through the use of high resolution topographic information derived from LiDAR and a suite of hydrologic and two-dimensional (2D) hydraulic models. The alluvial fan, with its active portion traversed by Asiga River, is of...
Conference Paper
Full-text available
Rainfall has always been a factor in every flood occurrences in most, if not all, of the floodplain areas of Caraga Region, Mindanao, Philippines. Apart from its intensity, another parameter that has significant value in assessing flood incidents is the depth and velocity of the flood water. Flooding is the underlying phenomenon that the Phil-LiDAR...
Conference Paper
Full-text available
An approach for the development of near-real time visualization and analytical tools and techniques for effective flood forecasting and early warning in the Philippines is presented in this paper. The approach aims to combines high-resolution LiDAR data, free/open source two-dimensional flood modelling/simulation software (particularly HEC RAS 5),...
Conference Paper
Full-text available
LiDAR DTMs produced by conventional LiDAR sensors and techniques cannot accurately represent terrain covered by water due to the incapability of the lasers emitted by the LiDAR sensor to penetrate water especially at high flow conditions. Intermediate steps are usually taken to integrate or merge river bed elevation/bathymetry data gathered from fi...
Article
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In this paper, we investigated how survey configuration and the type of interpolation method can affect the accuracy of river flow simulations that utilize LIDAR DTM integrated with interpolated river bed as its main source of topographic information. Aside from determining the accuracy of the individually-generated river bed topographies, we also...
Article
Full-text available
Flooding is considered to be one of the most destructive among many natural disasters such that understanding floods and assessing the risks associated to it are becoming more important nowadays. In the Philippines, Remote Sensing (RS) and Geographic Information System (GIS) are two main technologies used in the nationwide modelling and mapping of...
Conference Paper
Full-text available
An automated approach for near-real time simulation and geo-visualization of flooding, including estimation of affected infrastructures, in Lake Mainit, considered the Philippines " deepest lake is presented. Perennial flooding in several areas around the lake due to increase in the lake " s water level during the rainy season and during the passin...
Conference Paper
Full-text available
A quantitative assessment of vertical accuracy of the recently released ALOS World 3D – 30m (AW3D30) Digital Elevation Model (DEM) over northeastern Mindanao, Philippines is presented. A comparison of DEM-derived and field measured Mean Sea Level (MSL) elevations of 274 ground control points revealed a Root Mean Square Error (RMSE) of 5.68 m, avera...
Conference Paper
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LiDAR-derived Digital Terrain and Surface Models (DTM/DSM) and flood simulation models were used to determine exposure and vulnerability of building to various flood hazard scenarios caused by extreme rainfall events in a river basin in Mindanao, Philippines. The methodology consist of (i.) generating a database of buildings from the DTM and DSM; (...
Article
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In this paper, we present a combined geospatial and two dimensional (2D) flood modeling approach to assess the impacts of flooding due to extreme rainfall events. We developed and implemented this approach to the Tago River Basin in the province of Surigao del Sur in Mindanao, Philippines, an area which suffered great damage due to flooding caused...
Article
Full-text available
In this paper, we present a combined geospatial and two dimensional (2D) flood modeling approach to assess the impacts of flooding due to extreme rainfall events. We developed and implemented this approach to the Tago River Basin in the province of Surigao del Sur in Mindanao, Philippines, an area which suffered great damage due to flooding caused...
Article
Full-text available
In this paper, we discuss how an academe-local government partnership can lead the way for the effective use of geospatial technologies for smarter and geospatially-informed decision making before, during, and after a flood disaster. In Jabonga municipality, in the province of Agusan del Norte, in Mindanao, Philippines, two significant flooding eve...
Article
Full-text available
In this paper, we discuss how an academe-local government partnership can lead the way for the effective use of geospatial technologies for smarter and geospatially-informed decision making before, during, and after a flood disaster. In Jabonga municipality, in the province of Agusan del Norte, in Mindanao, Philippines, two significant flooding eve...
Article
Full-text available
The ALOS World 3D – 30 m (AW3D30), ASTER Global DEM Version 2 (GDEM2), and SRTM-30 m are Digital Elevation Models (DEMs) that have been made available to the general public free of charge. An important feature of these DEMs is their unprecedented horizontal resolution of 30-m and almost global coverage. The very recent release of these DEMs, partic...
Article
Full-text available
The ALOS World 3D – 30 m (AW3D30), ASTER Global DEM Version 2 (GDEM2), and SRTM-30 m are Digital Elevation Models (DEMs) that have been made available to the general public free of charge. An important feature of these DEMs is their unprecedented horizontal resolution of 30-m and almost global coverage. The very recent release of these DEMs, partic...
Conference Paper
Evaluating the vegetation cover change is significant for establishing relations between policy decisions, regulatory procedures, and land management plans. This paper encompasses the vital role of Remote Sensing and Geographic Information System (GIS) in assessing the change detection of vegetation cover in Tubay, Agusan del Norte. The study site...
Conference Paper
Full-text available
Evaluating the vegetation cover change is significant for establishing relations between policy decisions, regulatory procedures, and land management plans. This paper encompasses the vital role of Remote Sensing and Geographic Information System (GIS) in assessing the change detection of vegetation cover in Tubay, Agusan del Norte. The study site...
Conference Paper
Full-text available
The Web-based Near-real Time Flood Event Visualization and Damage Estimations (Flood EViDEns) is an online geo-visualization application developed through the Phil-LiDAR 1 project of Caraga State University. The application is targeted to be utilized by the Local Government Units (LGUs) and communities in the Caraga Region, Mindanao, Philippines to...
Conference Paper
Full-text available
This paper presents an analysis of the potential effects of changing climate on the geographical distribution of suitable areas in the Philippines for the cultivation of Sago palms. The Sago palm is considered to be the highest starch producer at 25 tons per hectare per year. Sago palms are being cultivated in Visayas and Mindanao although its util...
Conference Paper
Full-text available
We developed an online tool for near-real time monitoring of rainfall intensity and accumulated rainfall in various localities in the Caraga Region, Mindanao, Philippines. The web map interface was built using Openlayers API where the locations of all rain gauge stations installed by ASTI DOST are plotted. For each station, a JavaScript is used to...
Conference Paper
Full-text available
In this paper, we present the methods and results for the assessment of flooding brought by two tropical storms in Tago river basin though integration of high resolution elevation datasets, satellite image analysis and numerical modeling. The datasets utilized in this paper include the 1-m spatial resolution LiDAR-derived Digital Terrain and Surfac...
Conference Paper
Full-text available
In this paper, we share our activities and recent accomplishments in utilizing high spatial resolution Light Detection and Ranging (LiDAR) datasets and other geospatial datasets and techniques for flood hazard mapping of river basins in Caraga Region, Mindanao, Philippines through the CSU Phil-LiDAR 1 project. CSU Phil-LiDAR 1 is one of several pro...
Conference Paper
Full-text available
Identifying buildings that are exposed and vulnerable to flooding is important in flood disaster preparedness, risk assessment, and mitigation. In most cases, the availability of a 3D building database where each building is attributed in terms of name, type (e.g., residential, commercial, government, educational, etc.), and height (among many othe...
Conference Paper
Full-text available
We analyzed the potential effects of changing climate on the geographical distribution of suitable areas in the Philippines for the cultivation of starch-rich Sago palms. We used the EcoCrop model to predict climatically-suitable areas of Sago palms for the current and future climate scenarios. For the current climate, we utilized WorldClim version...
Conference Paper
Full-text available
In the year 2014, heavy rains associated with tropical storms Lingling (known as Agaton in the Philippines; January 10-20, 2014) and Jangmi (locally known as Seniang; December 27, 2014 – January 1, 2014) triggered massive flooding and caused fatalities in many localities, particularly in Caraga Region in northeastern Mindanao. Based on ground data,...
Technical Report
Full-text available
Lake Mainit is considered to be the Philippine’s deepest lake with a maximum depth reaching about 223 m. It is geographically located between the Provinces of Surigao del Norte and Agusan del Norte, in the Island of Mindanao. With a surface area of 149.86 km2, it ranks fourth to Laguna Lake as one of the Philippine’s largest lakes. The lake receive...
Conference Paper
Full-text available
Mapping very specific vegetation using satellite images could be an arduous task especially if the coverage is very large. A good approach would be to avoid processing satellite images where the species is unlikely to be found and focusing only on areas that they are likely to exist. In this paper, we propose the use of species distribution modelin...
Conference Paper
Full-text available
The ASTER GDEM Version 2 (v2) which was released in 2011 is considered to be the highest resolution and readily available global digital elevation model. Having a spatial resolution of 30-m, the ASTER GDEM v2 contains significant improvements of Version 1 in terms of spatial coverage, refined horizontal resolution, water masking, and inclusion of n...
Conference Paper
In the Philippines, there are plans for the mass propagation and commercial utilization of the Sago palm. The government, in particular, is planning to develop and sustain a large-scale Sago starch industry that can supply raw materials for food and non-food uses, and for production of high value products such as ethanol and lactic acid. However, i...
Conference Paper
Full-text available
We utilized satellite-derived datasets and a species distribution model in finding areas in Visayas and Mindanao, Philippines that are suitable to plant Sago palms. The locations of existing sago palm stands were detected through analysis of satellite images (ALOS AVNIR-2, ASTER VNIR, Envisat ASAR and WorldView-2) and conduct of field surveys. From...
Conference Paper
Full-text available
We present in this paper the results of our study that aims to map the distribution of the sago palm (Metroxylon sagu) in Agusan del Sur province in northeastern Mindanao, Philippines using remote sensing data and techniques. The sago palms have been reported to exist in marshlands and wetlands of northeastern Mindanao which are difficult to access...
Conference Paper
Full-text available
In the Philippines, the commercial utilization of sago palm (Metroxylon sagu) as a significant source of starch that can be converted into flour, lactic acid, ethanol and biodegradable plastics, are increasing. Along with this comes the need to determine the location and distribution of these palms, and to ascertain whether there is enough supply o...
Article
This paper presents the preliminary results of an on-going project which aims to distinguish sago palm from other palm trees through the conduct of in-situ spectral response measurements. The measurements were carried out in the sago palm-rich municipalities of Bunawan, Agusan del Sur; Tagbina, Surigao del Sur; Jabonga, Agusan del Norte, and Butuan...
Article
Full-text available
Landsat MSS and ETM+ images were analyzed to detect 25-year land-cover change (1976–2001) in the critical Taguibo Watershed in Mindanao Island, Southern Philippines. This watershed has experienced historical modifications of its land-cover due to the presence of logging industries in the 1950s, and continuous deforestation due to illegal logging an...
Conference Paper
Full-text available
This paper describes a combined remote sensing-GIS-logistic regression approach of merging extracted information from Landsat images with georeferenced biophysical and socio-economic datasets in the detection and analysis of the driving forces of forest cover change in Agusan del Norte (ADN) in Mindanao Island, Philippines, a province where forest...
Conference Paper
Full-text available
This paper presents an approach in extracting multi-temporal land-cover information (years 1976-2001) from cloud-contaminated remotely-sensed images acquired by the Landsat Multi-Spectral Scanner (MSS) and Enhanced Thematic Mapper plus (ETM+) sensors in order to detect and analyze deforestation and other types of land-cover change (LCC) in two fore...
Conference Paper
Full-text available
This paper presents an approach in extracting multi-temporal land-cover information (years 1976-2001) from cloud-contaminated remotely-sensed images acquired by the Landsat Multi-Spectral Scanner (MSS) and Enhanced Thematic Mapper plus (ETM+) sensors in order to detect and analyze deforestation and other types of land-cover change (LCC) in two fore...
Article
Full-text available
This paper presents an integrated approach involving Remote Sensing (RS), Geographic Information System (GIS) and hydrologic models to characterize and quantify the impacts of land cover change in tropical watersheds, specifically in the critical Taguibo Watershed in Mindanao, Philippines. A rainfall-runoff model based on the US Soil Conservation S...
Chapter
Full-text available
We analyzed Landsat MSS and ETM+ images to detect 25-year land-cover change (1976-2001) in the critical Taguibo Watershed in Mindanao Island, Southern Philippines. This watershed has experienced historical modifications of its land-cover due to the presence of logging industries in the 1960s, and continuous deforestation due to illegal logging and...

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Projects (4)
Archived project
Project 1 is one of the component projects of the ITPS Center, an accelerated R&D Program for Capacity Building of Research and Development Institutions and Industrial Competitiveness within the framework of the Niche Centers in the Regions for R & D (NICER) Program funded by the Department of Science and Technology (DOST) and monitored by the Philippine Council for Agriculture, Aquatic and Natural Resources Research and Development (PCAARRD). Project 1 developed an integrated online geo-database of ITPs in Caraga Region using RS and GIS technologies. Specifically, it mapped the species types, location and extent of ITPs in the region using airborne (drones/UAS) and satellite remote sensing images; developed an online/web-based GIS database of ITP types, location and extent integrated with other spatial and non-spatial datasets; determined areas suitable for establishing new ITPs; and conducted accessibility and efficiency analysis of log production flow from source to processing plants to its marketers and distributors. The ITP Geodatabase Visualization Portal can be accessed at https://geoitp.ccgeo.info/. The geodatabase itself can be accessed within a GIS environment by creating a connection to the WMS Server at http://mindset.ccgeo.info:8080/geoserver/geoitp/wms; or by creating a connection to the WFS Server at http://mindset.ccgeo.info:8080/geoserver/geoitp/wfs. Project outputs can be accessed at http://mindset.ccgeo.info:82/organization/industrial-tree-plantation-itp-research-and-innovation-center.
Archived project
Archived project
The Phil-LiDAR 1.B.14 Project, or simply known as the "CSU Phil-LiDAR 1 Project" is a three-year project implemented in April 1, 2014 by the Caraga State University through the Caraga Center for Geo-informatics of the College of Engineering & Information Technology, in Ampayon, Butuan City, Mindanao, Philippines. It is one of several projects under the “Phil-LiDAR-1. Hazard Mapping of the Philippines using LiDAR” program funded by the Department of Science and Technology (DOST). The Phil-LiDAR 1 Program aims to produce detailed flood hazard maps for the 2/3 of the Philippine river systems using LiDAR Technology. CSU Phil-LiDAR 1 in particular was implemented to generate flood hazard maps of twelve (12) river basins of Caraga Region (excluding the Agusan River Basin which has been covered by the UP DREAM Program). The project was able to generate a total of 12 sets of detailed flood hazard maps of the 12 RBs of Caraga Region; each set comprised of two (2) historical flood events and six (6) hypothetical extreme rainfall scenarios flood hazard maps (2, 5, 10, 25, 50 and 100-return periods). From these maps, we were able to generate a total of 41 sets of city/municipal level detailed flood hazard maps for 41 cities/municipalities of Caraga Region. Other major outputs includes 7,749.46 km of validated and bathymetry integrated, 1-m spatial resolution LiDAR data products that include Digital Terrain Model (DTM) and Digital Surface Model (DSM), the development and deployment of three (3) web-based applications for localized flood disaster management; 41 research publications (of which 32 are indexed in SCOPUS); and various partnerships between the project and LGUs.