From Continental Shelf to Slope: Mapping the Oceanic Realm
CONTAINS OPEN ACCESS

This volume covers multi-disciplinary Research and Development contributions from Europe, Asia and North America on geology, geophysics, bathymetric and biological aspects, towards data sampling, acquisition, data analysis and its results, and innovative ways of data access. It also presents the development of processes to map, harmonize and integrate marine data across EEZ boundaries, an impressive example of which is the European EMODnet (European Marine Observation and Data network) initiative. EMODnet assembles scattered and partially hidden marine data into continentally harmonized geospatial data products for public benefit and increasingly within overseas collaboration. The volume also aims to shed light on an evaluation of biological and mineral resources and environmental assessments at continental shelf to slope depths. Western Pacific examples provide excellent case studies for this topic. Mapping of the Ocean Realm is not only for scientific purposes, but also for the people who live by the seas. Communication amongst scientists and multiple stakeholders is essential for living sustainably with the seas. In this volume we encourage dialogue amongst all the stakeholders.
High-resolution geological mapping towards an understanding of post-glacial development and Holocene sedimentation processes in the eastern Gulf of Finland: an EMODnet Geology case study
-
Published:September 07, 2022
-
CiteCitation
Daria Ryabchuk, Alexander Sergeev, Vladimir Zhamoida, Leonid Budanov, Alexander Krek, Igor Neevin, Ekaterina Bubnova, Aleksandr Danchenkov, Olga Kovaleva, 2022. "High-resolution geological mapping towards an understanding of post-glacial development and Holocene sedimentation processes in the eastern Gulf of Finland: an EMODnet Geology case study", From Continental Shelf to Slope: Mapping the Oceanic Realm, K. Asch, H. Kitazato, H. Vallius
Download citation file:
- Share
Abstract
Analyses of high-resolution multibeam and sub-bottom profiling data, acquired during marine geological field cruises between 2017 and 2019 in the eastern Gulf of Finland (Baltic Sea), enabled the detailed mapping of Quaternary deposits, and revealed diverse submerged glacial and post-glacial landforms (e.g. streamlined moraine ridges, large retreat moraine ridges, De Geer moraines and kettle holes). The morphology of these glacial features provides evidence of the ice-sheet retreat direction and rate throughout the deglaciation of the region, which occurred between 13.8 and 13.3 ka BP (Pandivere–Neva Stage) and 12.25 ka BP (Salpausselkä I Stage). Analysis of sub-bottom profiling, supported by piston long-core sampling, indicates periods of bottom erosion/non-deposition during the Holocene caused by relative water-level regressions. Significant negative relief features are also observed in the area for the first time. These linear and curved V-shaped furrows are several kilometres long and 5 m deep, and are tentatively ascribed to bottom current and gas-seepage processes.
- acoustical methods
- acoustical profiles
- Atlantic Ocean
- Baltic Sea
- bathymetry
- bottom features
- Cenozoic
- cores
- data acquisition
- data processing
- deglaciation
- deposition
- end moraines
- erosion
- geophysical methods
- geophysical profiles
- geophysical surveys
- glacial features
- Gulf of Finland
- high-resolution methods
- Holocene
- kettles
- landforms
- mapping
- marine geology
- moraines
- multibeam methods
- North Atlantic
- ocean floors
- postglacial environment
- Quaternary
- regression
- relief
- sea-level changes
- sedimentation
- seismic stratigraphy
- submergence
- surveys
- terminal moraines
- De Greer moraines