PANGAEA_987351 Porewater geochemistry of sediment core AL561_5-1 Dale, Andy W; Lomnitz, Ulrike Porewater geochemistry of sediment core AL561_5-1 2025-11-24 PANGAEA Dataset https://doi.pangaea.de/10.1594/PANGAEA.987351 Investigator Andy W Dale adale@geomar.de Earth Science Type DEPTH, sediment/rock Replicate Alkalinity, total Barium Boron Bromide Calcium Chloride Iron Potassium Lithium Magnesium Manganese Sodium Ammonium Phosphate Silicon Silicate Sulfate Strontium geoscientificInformation AL561 AL561_5-1 ALK561_5BIGO2-1 Bottom lander Geochemistry MUC North Sea porewater Porewater chemistry Titration, Pavlova Inductively coupled plasma atomic emission spectroscope (ICP-AES) Ion chromatography Photometry Alkor (1990) 2021-08-04 2021-08-04 Complete 58.18296 58.18296 9.78729 9.78729 0.0 m (DEPTH, sediment/rock) 0.13 m (DEPTH, sediment/rock) APOC Anthropogenic impacts on particulate organic carbon cycling in the North Sea unrestricted CC-BY-4.0: Creative Commons Attribution 4.0 International English PANGAEA Data Publisher for Earth & Environmental Science https://www.pangaea.de/ Data Center Contact Michael Diepenbroek info@pangaea.de

Leobener Str.

Bremen Bremen 28359 Germany online 462 data points text/tab-separated-values Spiegel, Timo; Dale, Andrew W; Lenz, Nina; Schmidt, Mark; Moros, Matthias; Lindhorst, Sebastian; Wolschke, Hendrik; Müller, Daniel; Butzin, Martin; Fuhr, Michael; Kalapurakkal, Habeeb Thanveer; Kasten, Sabine; Wallmann, Klaus (2025): Mass accumulation rates decreased in the Skagerrak basin over the last 100 years. Continental Shelf Research, 286, 105411, https://doi.org/10.1016/j.csr.2025.105411 Spiegel, Timo; Dale, Andrew W; Lenz, Nina; Schmidt, Mark; Sommer, Stefan; Becker, Kevin W; Elling, Felix J; Porz, Lucas; Daewel, Ute; Fuhr, Michael; Kalapurakkal, Habeeb Thanveer; Wallmann, Klaus (2025): Benthic POC cycling in the Skagerrak basin: The role of lateral POC input. Continental Shelf Research, 293, 105536, https://doi.org/10.1016/j.csr.2025.105536 Spiegel, Timo; Dale, Andrew W; Lenz, Nina; Schmidt, Mark; Sommer, Stefan; Kalapurakkal, Habeeb Thanveer; Przibilla, Anna; Lindhorst, Sebastian; Wallmann, Klaus (2023): Biogenic silica cycling in the Skagerrak. Frontiers in Marine Science, 10, 1141448, https://doi.org/10.3389/fmars.2023.1141448 Spiegel, Timo; Diesing, Markus; Dale, Andrew W; Lenz, Nina; Schmidt, Mark; Sommer, Stefan; Böttner, Christoph; Fuhr, Michael; Kalapurakkal, Habeeb Thanveer; Schulze, Cosima; Wallmann, Klaus (2024): Modelling mass accumulation rates and 210Pb rain rates in the Skagerrak: lateral sediment transport dominates the sediment input. Frontiers in Marine Science, 11, 1331102, https://doi.org/10.3389/fmars.2024.1331102

The AL561 cruise was conducted in the framework of the project APOC ("Anthropogenic impacts on Particulate Organic Carbon cycling in the North Sea"). This collaborative project between GEOMAR, AWI, HEREON, UHH, and BUND is to understand how particulate organic carbon (POC) cycling contributes to carbon sequestration in the North Sea and how this ecosystem service is compromised and interlinked with global change and a range of human pressures include fisheries (pelagic fisheries, bottom trawling), resource extraction (sand mining), sediment management (dredging and disposal of dredged sediments) and eutrophication. The main aim of the sampling activity during AL561 cruise was to recover undisturbed sediment from high accumulation sites in the Skagerrak/Kattegat and to subsample sediment/porewater at high resolution in order to investigate sedimentation transport processes, origin of sediment/POC and mineralization processes over the last 100- 200 years. Moreover, the actual processes of sedimentation and POC degradation in the water column and benthic layer will be addressed by sampling with CTD and Lander devices. In total 9 hydroacoustic surveys (59 profiles), 4 Gravity Corer, 7 Multicorer, 3 BIGO Lander and 3 CTD stations were successfully conducted during the AL561 cruise. ** For all details see the full metadata description at "https://doi.pangaea.de/10.1594/PANGAEA.987351"!

http://en.wikipedia.org/wiki/Skagerrak Skagerrak https://doi.org/10.1016/j.csr.2025.105411 Mass accumulation rates decreased in the Skagerrak basin over the last 100 years https://doi.org/10.1016/j.csr.2025.105536 Benthic POC cycling in the Skagerrak basin: The role of lateral POC input https://doi.org/10.3289/CR_AL561 AL561 https://doi.org/10.3389/fmars.2023.1141448 Biogenic silica cycling in the Skagerrak https://doi.org/10.3389/fmars.2024.1331102 Modelling mass accumulation rates and 210Pb rain rates in the Skagerrak: lateral sediment transport dominates the sediment input https://www.apoc-project.de/en/ APOC https://www2.bsh.de/aktdat/dod/fahrtplanung/Alkor.htm Alkor (1990) DIF 9.4 2025-11-24 2025-12-23