/* DATA DESCRIPTION: Citation: Dale, Andy W; Lomnitz, Ulrike (2025): Particulate geochemistry of sediment core AL561_22-1 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.987339 Abstract: 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. Keyword(s): Geochemistry; MUC; North Sea; porewater; Porewater chemistry; Sediment Related to: 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 Project(s): Anthropogenic impacts on particulate organic carbon cycling in the North Sea (APOC) (URI: https://www.apoc-project.de/en/) Coverage: LATITUDE: 58.312950 * LONGITUDE: 9.572110 DATE/TIME START: 2021-08-08T08:25:00 * DATE/TIME END: 2021-08-08T08:25:00 MINIMUM DEPTH, sediment/rock: 0.005 m * MAXIMUM DEPTH, sediment/rock: 0.445 m Event(s): AL561_22-1 (ALK561_22MUC7) * LATITUDE: 58.312950 * LONGITUDE: 9.572110 * DATE/TIME: 2021-08-08T08:25:00 * ELEVATION: -677.0 m * LOCATION: Skagerrak (URI: http://en.wikipedia.org/wiki/Skagerrak) * CAMPAIGN: AL561 (URI: https://doi.org/10.3289/CR_AL561) * BASIS: Alkor (1990) (URI: https://www2.bsh.de/aktdat/dod/fahrtplanung/Alkor.htm) * METHOD/DEVICE: MultiCorer (MUC) Parameter(s): DEPTH, sediment/rock [m] (Depth sed) * GEOCODE * PI: Dale, Andy W (adale@geomar.de) Replicate (Repl) * PI: Dale, Andy W (adale@geomar.de) Carbon, organic, total [%] (TOC) * PI: Dale, Andy W (adale@geomar.de) * METHOD/DEVICE: EURO EA Elemental Analyzer Calcium carbonate [%] (CaCO3) * PI: Dale, Andy W (adale@geomar.de) * METHOD/DEVICE: EURO EA Elemental Analyzer Water content, wet mass [%] (Water wm) * PI: Dale, Andy W (adale@geomar.de) Nitrogen, total [%] (TN) * PI: Dale, Andy W (adale@geomar.de) * METHOD/DEVICE: EURO EA Elemental Analyzer Sample code/label (Sample label) * PI: Dale, Andy W (adale@geomar.de) Porosity, volume (Poros vol) * PI: Dale, Andy W (adale@geomar.de) Sulfur, total [%] (TS) * PI: Dale, Andy W (adale@geomar.de) * METHOD/DEVICE: EURO EA Elemental Analyzer Carbon, total [%] (TC) * PI: Dale, Andy W (adale@geomar.de) * METHOD/DEVICE: EURO EA Elemental Analyzer License: Creative Commons Attribution 4.0 International (CC-BY-4.0) (URI: https://creativecommons.org/licenses/by/4.0/) Status: Curation Level: Enhanced curation (URI: https://wiki.pangaea.de/wiki/Curation_levels) Size: 450 data points */ Depth sed [m] Repl TOC [%] CaCO3 [%] Water wm [%] TN [%] Sample label Poros vol TS [%] TC [%] 0.005 A 2.4385 9.637462 77.29468 0.2995 9820 0.8926957 0.3805 3.5950 0.015 A 2.3740 8.499966 72.66405 0.2935 9821 0.8665965 0.3375 3.3940 0.025 A 2.3850 9.262463 72.92804 0.2905 9822 0.8681301 0.3570 3.4965 0.035 A 2.3265 10.224960 68.17995 0.2880 9823 0.8396471 0.3415 3.5535 0.045 A 2.3400 9.895794 67.32623 0.2830 9824 0.8343158 0.3389 3.5275 0.055 A 2.2830 10.337460 65.68751 0.2835 9825 0.8238932 0.3135 3.5235 0.065 A 2.3625 10.524960 66.82376 0.2925 9826 0.8311467 0.2920 3.6255 0.075 A 2.4470 11.283290 68.05607 0.2955 9827 0.8388777 0.2765 3.8010 0.085 A 2.3835 11.783290 66.87585 0.2930 9828 0.8314763 0.2680 3.7975 0.095 A 2.3890 11.416620 65.99908 0.2895 9829 0.8258944 0.2845 3.7590 0.105 A 2.4205 11.708290 66.35316 0.2920 9830 0.8281572 0.2615 3.8255 0.115 A 2.4570 11.741620 67.38658 0.2905 9831 0.8346949 0.2745 3.8660 0.125 A 2.3610 12.316620 66.48270 0.2885 9832 0.8289822 0.2270 3.8390 0.135 A 2.3175 12.016620 67.08694 0.2830 9833 0.8328095 0.2515 3.7595 0.145 A 2.3330 11.483290 65.97904 0.2790 9834 0.8257659 0.2540 3.7110 0.155 A 2.2570 11.933290 65.94999 0.2705 9835 0.8255796 0.2455 3.6890 0.165 A 2.1915 11.583290 66.54871 0.2655 9836 0.8294020 0.2465 3.5815 0.175 A 2.2520 11.208290 65.38229 0.2680 9837 0.8219239 0.2270 3.5970 0.185 A 2.1390 11.154120 63.52074 0.2620 9838 0.8097172 0.2685 3.4775 0.195 A 2.0580 10.658290 63.70435 0.2510 9839 0.8109364 0.2695 3.3370 0.205 A 1.9670 11.037460 64.70159 0.2425 9840 0.8174998 0.2530 3.2915 0.215 A 2.1420 11.187460 63.40642 0.2450 9841 0.8089564 0.2550 3.4845 0.225 A 1.9255 11.662450 62.43020 0.2425 9842 0.8024060 0.2350 3.3250 0.235 A 1.9465 12.729120 63.53839 0.2500 9843 0.8098345 0.2530 3.4740 0.245 A 1.9480 11.691620 62.40898 0.2560 9844 0.8022625 0.2365 3.3510 0.255 A 1.8845 11.999950 63.67066 0.2635 9845 0.8107129 0.2570 3.3245 0.265 A 1.8915 11.795790 64.13517 0.2505 9846 0.8137839 0.2435 3.3070 0.275 A 1.9480 9.874961 62.97929 0.2380 9847 0.8061023 0.2340 3.1330 0.285 A 1.9375 11.891620 64.06454 0.2540 9848 0.8133183 0.2375 3.3645 0.295 A 1.9050 13.016610 64.63606 0.2535 9849 0.8170715 0.2285 3.4670 0.305 A 1.9080 8.499966 64.75435 0.2145 9850 0.8178443 0.1760 2.9280 0.315 A 1.9325 10.816620 62.63128 0.2385 9851 0.8037632 0.2405 3.2305 0.325 A 1.9945 11.779120 62.23698 0.2490 9852 0.8010979 0.2870 3.4080 0.335 A 1.7705 12.883280 62.09128 0.2640 9853 0.8001090 0.3095 3.3165 0.345 A 1.8615 11.699950 62.34557 0.2440 9854 0.8018335 0.3290 3.2655 0.355 A 1.8825 12.220780 61.91491 0.2460 9855 0.7989089 0.2550 3.3490 0.365 A 1.8810 12.162450 60.97883 0.2540 9856 0.7924857 0.3375 3.3405 0.375 A 1.8490 11.783290 60.82551 0.2460 9689 0.7914248 0.3770 3.2630 0.385 A 1.8040 12.245780 60.36641 0.2470 9690 0.7882330 0.3325 3.2735 0.395 A 1.7905 12.170780 59.95940 0.2405 9691 0.7853844 0.3635 3.2510 0.405 A 1.7840 12.166620 59.85236 0.2405 9692 0.7846323 0.3470 3.2440 0.415 A 1.7630 11.987450 60.49108 0.2435 9693 0.7891020 0.3650 3.2015 0.425 A 1.7585 12.670780 60.79035 0.2465 9694 0.7911811 0.3475 3.2790 0.435 A 1.7420 11.737450 62.18646 0.2410 9695 0.8007553 0.3365 3.1505 0.445 A 1.7480 11.841620 0.2390 0.3710 3.1690 0.005 A/Andy 76.49786 9421 0.8883228 0.015 A/Andy 75.52736 9422 0.8829317 0.025 A/Andy 73.29609 9423 0.8702587 0.035 A/Andy 74.00845 9424 0.8743476 0.045 A/Andy 72.29282 9425 0.8644302 0.055 A/Andy 72.01292 9426 0.8627894 0.065 A/Andy 70.38670 9427 0.8531259 0.075 A/Andy 69.14252 9428 0.8455794 0.085 A/Andy 68.59395 9429 0.8422087 0.095 A/Andy 69.32121 9430 0.8466716 0.115 A/Andy 65.34156 9431 0.8216605 0.135 A/Andy 65.04296 9432 0.8197241