Quantifying seabed geodiversity of the Archipelago Sea, Baltic Sea, Finland

This study investigated the geodiversity of the Archipelago Sea in the northern Baltic Sea, focusing on geological features and their spatial distribution. By adapting methods used in previous Baltic Sea studies, we conducted spatial analyses of geological data sets including bedrock type, seabed su...

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Main Authors: Anu M. Kaskela, Aarno T. Kotilainen
Format: Article
Language:English
Published: Geological Survey of Denmark and Greenland 2024-02-01
Series:GEUS Bulletin
Subjects:
Online Access:https://geusbulletin.org/index.php/geusb/article/view/8317/14464
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author Anu M. Kaskela
Aarno T. Kotilainen
author_facet Anu M. Kaskela
Aarno T. Kotilainen
author_sort Anu M. Kaskela
collection DOAJ
description This study investigated the geodiversity of the Archipelago Sea in the northern Baltic Sea, focusing on geological features and their spatial distribution. By adapting methods used in previous Baltic Sea studies, we conducted spatial analyses of geological data sets including bedrock type, seabed substrates and seabed structures. Bedrock and substrate data were freely available, while seabed structures were modelled from bathymetry data. Geodiversity was quantified using a geodiversity index, which considers the variety of physical elements, roughness and area of the unit. The analyses revealed a diverse seabed environment in the Archipelago Sea with varying geodiversity throughout the study area. Significant features contributing to geodiversity included bedrock fracture and fault zones and large end-moraine formations. Similar patterns have been observed in terrestrial areas of Finland. The analyses also detected relations between archipelago zonation and geodiversity with areas of open sea more homogeneous than the middle and inner archipelago. This study formally recognises the complexity of the seabed in the Archipelago Sea and highlights the importance of understanding the geological processes shaping the region. The results can inform maritime spatial planning and sustainable resource management.
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spelling doaj.art-fa0f25205cee470cb852f8fae54b9cd22024-02-29T15:39:24ZengGeological Survey of Denmark and GreenlandGEUS Bulletin2597-21542024-02-01521810.34194/geusb.v52.83178317Quantifying seabed geodiversity of the Archipelago Sea, Baltic Sea, FinlandAnu M. Kaskela0Aarno T. Kotilainen1Geological Survey of Finland (GTK), Espoo, FinlandGeological Survey of Finland (GTK), Espoo, FinlandThis study investigated the geodiversity of the Archipelago Sea in the northern Baltic Sea, focusing on geological features and their spatial distribution. By adapting methods used in previous Baltic Sea studies, we conducted spatial analyses of geological data sets including bedrock type, seabed substrates and seabed structures. Bedrock and substrate data were freely available, while seabed structures were modelled from bathymetry data. Geodiversity was quantified using a geodiversity index, which considers the variety of physical elements, roughness and area of the unit. The analyses revealed a diverse seabed environment in the Archipelago Sea with varying geodiversity throughout the study area. Significant features contributing to geodiversity included bedrock fracture and fault zones and large end-moraine formations. Similar patterns have been observed in terrestrial areas of Finland. The analyses also detected relations between archipelago zonation and geodiversity with areas of open sea more homogeneous than the middle and inner archipelago. This study formally recognises the complexity of the seabed in the Archipelago Sea and highlights the importance of understanding the geological processes shaping the region. The results can inform maritime spatial planning and sustainable resource management.https://geusbulletin.org/index.php/geusb/article/view/8317/14464archipelago zonationgeomorphologymarine landscapeseafloor mappingsemi-automated spatial analysis
spellingShingle Anu M. Kaskela
Aarno T. Kotilainen
Quantifying seabed geodiversity of the Archipelago Sea, Baltic Sea, Finland
GEUS Bulletin
archipelago zonation
geomorphology
marine landscape
seafloor mapping
semi-automated spatial analysis
title Quantifying seabed geodiversity of the Archipelago Sea, Baltic Sea, Finland
title_full Quantifying seabed geodiversity of the Archipelago Sea, Baltic Sea, Finland
title_fullStr Quantifying seabed geodiversity of the Archipelago Sea, Baltic Sea, Finland
title_full_unstemmed Quantifying seabed geodiversity of the Archipelago Sea, Baltic Sea, Finland
title_short Quantifying seabed geodiversity of the Archipelago Sea, Baltic Sea, Finland
title_sort quantifying seabed geodiversity of the archipelago sea baltic sea finland
topic archipelago zonation
geomorphology
marine landscape
seafloor mapping
semi-automated spatial analysis
url https://geusbulletin.org/index.php/geusb/article/view/8317/14464
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