Klaus Schwarzer

Klaus Schwarzer
Christian-Albrechts-Universität zu Kiel | CAU · Institute of Geosciences, Coastal Geology and Sedimentology

PhD

About

195
Publications
61,470
Reads
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1,410
Citations
Citations since 2016
57 Research Items
755 Citations
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2016201720182019202020212022020406080100120140
2016201720182019202020212022020406080100120140
2016201720182019202020212022020406080100120140
Introduction
Klaus Schwarzer has retired from the Institute of Geosciences, Coastal Geology and Sedimentology, Christian-Albrechts-Universität zu Kiel but still works on the same subjects. His research focusses on Coastal Geomorphology, Geology, Delta Development, Habitat Mapping and Tsunami. The focus is mainly on the Baltic Sea and North Sea but as well on delta systems in SE-Asia and Brazil. Another topic is the influence of tsunamis on offshore environments.
Additional affiliations
April 2000 - September 2010
Universität Bremen
Position
  • Coastal Geology and Coastal geomorphology
January 1990 - September 2019
Christian-Albrechts-Universität zu Kiel
Position
  • Senior Researcher
January 1989 - present
Christian-Albrechts-Universität zu Kiel
Position
  • Coastal Geology, Coastal processes, Marine Environmental Surveying, Field courses related to Coastal Geology, Coastal Processes and Hydroacoustics

Publications

Publications (195)
Article
Full-text available
Can Gio (CG), a mangrove forest with a dense network of tidal creeks, gradually grew and spread seaward on a coastal platform, which was built since about 8 ka before present (BP). Along with this development, a sand ridge began to form and moved back with the shoreline withdrawal landward in the Late Holocene. This mangrove environment is likely a...
Article
Full-text available
Understanding the development of shallow seas is essential, as they provide a major environmental and economic resource. An investigation of the Holocene development and the present conditions of the Andaman Sea shelf was carried out based on hydroacoustic surveys and sedimentological sampling. The results show that the relative sea level in the of...
Article
Full-text available
Glacial landforms are abundant in the North Sea basin and are often used to reconstruct the impact and dynamics of ice sheets during the Pleistocene. Geophysical methods have allowed the mapping and structural analysis of glacial landforms at the surface and in the subsurface to estimate the position of former ice margins in the North Sea. However,...
Article
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We present a compilation and analysis of 1099 Holocene relative shore-level (RSL) indicators located around the Baltic Sea including 867 relative sea-level data points and 232 data points from the Ancylus Lake and the following transitional phase. The spatial distribution covers the Baltic Sea and near-coastal areas fairly well, but some gaps remai...
Article
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Cobbles and boulders on the seafloor are of high ecological value in their function ashabitats for a variety of benthic species, contributing to biodiversity and productivity in marineenvironments. We investigate the origin, physical shape, and structure of habitat-forming cobblesand boulders and reflect on their dynamics in coastal environments of...
Article
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Environmental factors shape the structure and functioning of benthic communities. In coastal zones of the southwestern Baltic Sea, boulder fields represent one of the most productive habitats, supporting diverse benthic communities that provide many ecosystem services. In this study, the influence of the geological characteristics of boulder fields...
Article
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Tunnel valleys are assumed to form near the margin of ice sheets. Hence, they can be used to reconstruct the dynamics of former ice margins. The detailed formation and infill of tunnel valleys, however, are still not well understood. Here, we present a dense grid of high‐resolution 2D multi‐channel reflection seismic data from the German sector of...
Chapter
The influence of tsunamis on the submarine environment was virtually unknown before the 2004 Indian Ocean Tsunami, which hit the coastlines of many countries around the Indian Ocean, and the 2011 Tohoku Tsunami, which mainly hit coastlines of Japan. When triggered by a tsunami, sediment can be redeposited over wide areas onshore, but especially offs...
Article
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Zusammenfassung: Nord-und Ostsee liegen räumlich eng beieinander. Sie sind nur durch die lediglich 60-80 km breite, aus quartären Sedimenten bestehende jütische Halbinsel voneinander getrennt. Gleichwohl verlief die Entwicklung beider Meere in der älteren und jüngeren geologischen Vergangenheit sehr unterschiedlich. Dies dokumentiert sich z. B. dar...
Article
Neobiotic species can have profound impacts on food webs and entire ecosystems. The American razor clam Ensis leei was introduced into the Wadden Sea by vessels in the late 1970s and has since spread widely. It has been suggested that Ensis does not interact strongly with other benthic species. The abundance and biomass of E. leei were recorded in...
Article
Full-text available
Stones and boulders in shallow waters (0-10 m water depth) form complex geo-habitats, serving as a hardground for many benthic species, and are important contributors to coastal biodiversity and high benthic production. This study focuses on limitations in stone and boulder detection using high-resolution sidescan sonar images in shallow water envi...
Technical Report
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Der 52 km² große, mesohaline Wasserkörper der Schlei ist das größte Brackgewässer in Schleswig-Holstein. Neben natürlich vorhandenen Stressfaktoren sind es die in der jüngeren Vergangenheit hinzugekommenen anthropogenen Einflüsse, die die Schlei zu einem äußerst empfindlichen Gewässer gemacht haben. Ihr derzeitiger ökologischer Zustand wird als sch...
Article
Continuous coastal erosion has been observed on the shoreline of major river deltas worldwide as a result of relative sea level rise and anthropogenic impacts. However, the relative contribution of sea-level rise on deltaic coastline retreat (i.e. separately from anthropogenic interference) has not been clearly defined, due to a lack of research on...
Conference Paper
Full-text available
Mecklenburg Bight (Baltic Sea) has various natural, geomorphological and sedimentological features reflecting hydrodynamic processes, sediment dynamics, biological activities and coastal development. This area is also strongly influenced by human activities like military exercises, professional fishing, dumping of dredged material and touristic act...
Research
Full-text available
Der geologisch/ sedimentologische Aufbau und die Habitatverteilung im Übergangsbereich Watt-Schelf zwischen der Amrumbank und der Eiderrinne (Nordsee) The geological / sedimentological built up and habi-tat distribution in the transition area Wadden Sea-Shelf between Amrum Bank and Eiderchannel-North Sea
Research
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Hydroacoustic Seafloor Mapping, North Sea, Habitat Mapping, Quaternary Development of the South-Eastern North Sea
Research
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Vom Sediment zum Topp-Prädator: Einfluss von Eigenschaften des Meeresbodens auf Benthos und benthivore Vögel. STopP-Synthese Institut für Geowissenschaften Sedimentologie, Küsten-und Schelfgeologie North Sea, Habitat Mapping, Quaternary Development of the Southeastern North Sea
Poster
Only sparse high-resolution reflection seismic data are available for the northeastern part of the German sector of the North Sea and thus the Neogene shelf architecture of this area is only poorly known. We acquired approx. 1000 km of 2D high-resolution multi-channel reflection seismic data close to Germany’s west coast between the Amrum bank and...
Technical Report
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The QSR describes and evaluates the current ecological status of the Wadden Sea. It identifies changes in this status and their possible causes, classifies issues of concern and indicates possible measures of redress, including evaluation of the likely effectiveness of these measures, and it detects gaps in knowledge. The QSR is an output of the Tr...
Book
Full-text available
The QSR describes and evaluates the current ecological status of the Wadden Sea. It identifies changes in this status and their possible causes, classifies issues of concern and indicates possible measures of redress, including evaluation of the likely effectiveness of these measures, and it detects gaps in knowledge. The QSR is an output of the Tr...
Technical Report
Full-text available
The cruise LI17-14 was carried out in the frame of the BMBF-funded project STopP - Synthe-sis (From Sediment to Top Predator - Influence of seabed characteristics on benthos and benthivore birds), which belongs to the KÜNO (Küstenforschung Nordsee - Ostsee) network. The objective of the cruise was to collect data of the sedimentological seafloor co...
Article
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TheFehmarn Belt is a key area for the Late Pleistocene and Holocene development of the Baltic Sea as it was a passage for marine and fresh water during its different stages. The pre-Holocene geological development of this area is presented based on the analysis of seismic profiles and sedimentary gravity cores. Late Pleistocene varve sediments of t...
Research
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The work of SO-220 pursued a multidisciplinary approach. The continental shelf of the Gulf of Tonkin and its continental slope at the transition to the deep-sea areas in the South China Sea were surveyed by three teams from a biogeochemical (sub-project 1), physical oceanographic (sub-project 2) and coastal-marine geologic (sub-project 3) approach....
Article
Full-text available
Hydroacoustic surveys are common tools for habitat investigation and monitoring that aid in the realisation of the aims of the EU Marine Directives. However, the creation of habitat maps is difficult, especially when benthic organisms densely populate the seafloor. This study assesses the sensitivity of entropy and homogeneity image texture paramet...
Research
Full-text available
The cruise was carried out in the frame of the BMBF-funded project STopP - Synthesis (From Sediment to Top Predator - Influence of seabed characteristics on benthos and benthivorous birds).
Research
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Cruise POS489 was performed in the frame of the project SEDINO II (SEDimentdynamik In Nord- und Ostsee), aiming to differentiate seafloor types under consideration of the shallow subsurface and the feedback of benthic organisms on the sediment distribution and consistency. The investigation area for this cruise was Sylt outer reef, German Bight. Th...
Research
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The cruise P474 was accomplished as part of the national research program “Entwicklung eines standardisierten Verfahrens zur flächendeckenden Erfassung und Beschreibung der sedimentologischen Eigenschaften und Prozesse auf der Meeresbodenoberfläche in der ausschliesslichen Wirtschaftszone (AWZ) von Nord- und Ostsee“ (SEDINO). The performed worked s...
Conference Paper
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Making use of acquired and sampled data and the chosen biotope classification systems soft bottom biotopes and biotope types could be mapped for both the Baltic and the North Sea areas. Regarding the Baltic Sea the mapping was done according to the classification rules of HELCOM HUB. Accordingly, six levels could be mapped for the entire German Bal...
Conference Paper
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Beach ridges are geomorphologic landforms that represent coastlines of marine and freshwater bodi es. They are variable in form, ranging from sandy fair weather deposits to storm-related boulder ridges. The depositional environment associated with those ridges is generally related to moving shore lines. In case of relative water-level rise, exposed...
Conference Paper
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The NW part of the Sunda Shelf offshore Phang Nga province (Thailand) is poorly investigate d. Be si de s some information from tin mining activities [1] and the fate of matter discharged by the Aye yarwady-Salween river system [2] this offshore area received some more attention after it was hit by the 2004 Indian Ocean Tsunami. However, most of th...
Article
The late Pleistocene Holocene stratigraphic architecture on the northeastern Brazilian continental shelf off the Parnaíba Delta has been explored by high-resolution seismic profiles. The seismic surveys reveal the widespread distribution of incised valleys of different size in offshore continuation of the present-day Parnaiba delta. According to mo...
Method
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Guideline for Seafloor Mapping in German Marine Waters Using High-Resolution Sonars
Research
Full-text available
The cruise was carried out in the frame of the BMBF-funded KÜNO-Project STopP (Vom Sediment zum Topp-Prädator – Einfluss von Eigenschaften des Meeresbodens auf Benthos und benthivore Vögel). The objective of this cruise was to collect high resolution data of the geological structure and physical properties of the seabottom sediments and the subsurf...
Article
The Assu Incised Valley (AIV) is a new example of an incised-valley system located on the Brazilian Equatorial continental shelf. This valley extends over 40 km from the present-day shoreline to the shelf break, in a passive margin setting, on a shallow (~70 m), narrow (43 km) and flat («1°) shelf, with mixed carbonate–siliciclastic sedimentation a...
Article
Full-text available
Sediment re-deposition in mangrove environments is usually attributed to marine and estuarine hydrodynamics - rainfall as a driver was not considered yet. However, combined with annual water level variations, tropical rainfall can play a significant role for sediment re-deposition. Inside mangroves, current velocities induced by rainwater run-off d...
Research
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The cruise Al 393 from March 1st - 7th was organized as a cruise for Master students of the Marine Geosciences Master at the CAU Kiel. Different hydroacoustic devices, sampling methods (grab sampler and vibro corer) such as water column investigations were introduced and operated on the research vessel Alkor. The former goal to go to the North Sea...
Research
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The cruise AL – 416 was carried out in the frame of the project SEDINO I (Entwicklung eines standardisierten Verfahrens zur flächendeckenden Erfassung und Beschreibung der sedimentologischen Eigenschaften und Prozesse auf der Meeresbodenoberfläche in der ausschließlichen Wirtschaftszone (AWZ) von Nord- und Ostsee Teilprojekt SEDINO I). The objectiv...
Research
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Ziel der meeresgeologischen Übungen ist es, Studenten der Geologie mit marin ausgerichtetem Studienschwerpunkt mit den grundlegenden Methoden, die bei marin-geologisch/sedimentologischen Arbeiten eingesetzt werden, vertraut zu machen. Neben der Fahrtplanung als Bestandteil dieser Übung ist es das wesentliche Ausbildungsziel, dass die Teilnehmer akt...
Research
Full-text available
The cruise was carried out in the frame of the BMBF-funded project STopP (Vom Sediment zum Topp-Prädator – Einfluss von Eigenschaften des Meeresbodens auf Benthos und benthivore Vögel). The objective of this cruise was to collect high resolution data of the geological structure and physical properties of the seabottom sediments in the STopP-Sea are...
Research
Full-text available
The cruise ALKOR – 378 was carried out in the frame of the BMBF funded project AufMod (Aufbau von integrierten Modellsystemen für die Deutsche Bucht). The objective was to collect high resolution data of bathymetry, geological built up of the seafloor and physical properties of seabottom sediments in the area west of Sylt Island (North Sea). Use of...
Research
Full-text available
The Cruise AL396 was accomplished as part of the KFKI (German Coastal Engineering Research Council) –project AufMod - F, funded by the Federal Ministry of Science and Technology. Main objective of AufMod is a model-based analysis of long-term morphodynamic processes in the German Bight (http://www.kfki.de/de/projekte/aktuell/aufmod). The Institute...
Article
Full-text available
Tsunami, storm and flash-flood event layers, which have been deposited over the last century on the shelf offshore Khao Lak (Thailand, Andaman Sea), are identified in sediment cores based on sedimentary structures, grain size compositions, Ti = Ca ratios and 210Pb activity. Individual offshore tsunami deposits are 12 to 30 cm in thickness and origi...
Conference Paper
It was doubted for a long time that in wave dominated coastal areas the impact of tsunami waves on shoreface deposits can be preserved. Following high resolution mapping with different hydroacoustic methods, positions for grab sampling and coring were identified, where tsunami deposits were supposed to occur. The sampled material was analyzed using...
Presentation
Full-text available
Till deposits in coastal areas are widespread in the northern hemisphere where Pleistocene glaciations left their remnants. They are building up the southern and western part of the Baltic Sea. Implications of large scale processes like crustal rebound as response of the last glaciation and modern sea level rise can be best observed at coastlines a...
Article
In this study, 11 CBERS 2B and 1 LANDSAT 5-TM satellite images from 2008 were used to estimate the suspended sediment concentration and the total suspended sediment load of the Parnaíba River (NEBrazil). The calculation of the amount of sediment in suspension was performed using Tassan’s algorithm, which was riginally developed for use on LANDSAT 5...
Article
Tsunami, storm and flash-flood event layers, which have been deposited over the last century on the shelf offshore Khao Lak (Thailand, Andaman Sea), are identified in sediment cores based on sedimentary structures, grain size compositions, Ti = Ca ratios and 210Pb activity. Individual offshore tsunami deposits are 12 to 30 cm in thickness and origi...
Article
Full-text available
The Leiruvogur Harbor Research Project (LHRP) is a multi-disciplinary, collaborative effort to locate and excavate the Viking Age harbors in the Leiruvogur Bay of southwestern Iceland. These harbors are among the most-mentioned landing sites in early Icelandic sources, but their location had not been determined prior to this project. Leiruvogur is...
Article
Full-text available
In this work, we present a baseline study on the geo-environmental, morphodynamical, and hydrodynamical conditions of the Parna´ıba River and its mouth, the Parna´ıba River Delta (PRD). The outline of the PRD indicates that waves are the major forcing factor for delta development. Furthermore, the shape of the delta suggests that there is a conside...