Birlo Stella sbirlo@uni-bremen.de 0000-0003-0174-4901 Wienhues Giulia giulia.wienhues@giub.unibe.ch 0000-0002-4282-488X Zahajská Petra petra.zahajska@unibe.ch 0000-0001-5858-0616 Grosjean Martin martin.grosjean@unibe.ch 0000-0002-3553-8842 García María Luján garcia@uni-bremen.de 0000-0002-2658-2753 Zolitschka Bernd zoli@uni-bremen.de 0000-0001-8256-0420 2024 Elemental pigment (hyperspectral imaging) data of the varved sediment record (HZM19) from Holzmaar, Germany dataset https://doi.org/10.1594/PANGAEA.965927 2024-11-14T13:16:04 Hyperspectral image (HSI) scanning of the composite record from Holzmaar (HZM19) was measured using a Specim PFD-CL-65-V10 E line scan camera (University of Bern, Switzerland). Data were processed using the ENVI software following the workflow of Butz et al. (2015, doi10.1117/1.JRS.9.096031): data were white-corrected, masked for cracks in the sediment surface and Relative Absorption Band Depths (RABDs) were computed for 2mm wide subsets. RABD671 (band depths from 640 to 702 nm) for Total Chloropigments-a (TChl-a), RABD845 (790 - 900 nm) for Bacteriopheopigments-a (Bphe-a), and RABD620 (600 - 640 nm) for Phycocyanin (PhyCy). To translate HSI indices into absolute concentrations, a pigment extraction was performed at the University of Bern using 23 samples covering the full range of RABD671 and RABD845 index values. Ca 1 g of wet sediment was treated with 100 % acetone following the method of Lami et al. (1994, doi:10.1007/BF00684032) and extractions were measured using a Shimadzu UV-1800 spectrophotometer to obtain bulk concentrations of TChl-a and Bphe-a in µg/g dry sediment using a molar extinction coefficient for TChl-a and Bphe-a. A proxy-proxy calibration was carried out using an ordinary least square regression. After all, only 1.42 % and 0.77 % of datapoints are outside of the calibration ranges for Chl-a (calibration range: 12.75 – 1202.68 µg/g, intercept = -4799.52, slope= 4756,45, r² = 0.8, p-val = 0.00, RMSEP 10-fold = 169.03, RMSEP % = 14.05) and Bphe-a (calibration range 0.38 – 345.12 µg/g, intercept = -1295,8, slope= 1319,7, r² = 0.94, p-val = 0.00, RMSEP 10-fold = 25.26, RMSEP % = 7.32). Ages refer to Birlo et al. (2023) and the related dataset is Model D available via doi:10.1594/PANGAEA.949292. García María Luján garcia@uni-bremen.de 0000-0002-2658-2753 Birlo Stella sbirlo@uni-bremen.de 0000-0003-0174-4901 Zahajská Petra petra.zahajska@unibe.ch 0000-0001-5858-0616 Wienhues Giulia giulia.wienhues@giub.unibe.ch 0000-0002-4282-488X Grosjean Martin martin.grosjean@unibe.ch 0000-0002-3553-8842 Zolitschka Bernd zoli@uni-bremen.de 0000-0001-8256-0420 2024 Ecological responses to solar forcing during the Homerian Climate Anomaly recorded by varved sediments from Holzmaar, Germany journal article The Holocene https://doi.org/10.1177/09596836241275008 09596836241275008 6.883333 6.883333 50.11667 50.11667 6.883333 50.11667 2019-08-11T00:00:00 2019-08-17T00:00:00 425.0 425.0 vertical profile HZM19 50.11667 6.883333 Holzmaar, West-Eifel Volcanic Field, Germany 425.0 2019-08-11T00:00:00 2019-08-17T00:00:00 Piston corer, UWITEC PCUWI 14.50 m 1415832 CC-BY-4.0 Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/ Core section label Sec label Birlo Stella sbirlo@uni-bremen.de 0000-0003-0174-4901 Sec label Section position Sect mm Length L http://dbpedia.org/resource/Length Birlo Stella sbirlo@uni-bremen.de 0000-0003-0174-4901 Sect [mm] Depth, composite Depth comp mcd depth http://purl.obolibrary.org/obo/PATO_0001595 Luminous Intensity J http://dbpedia.org/resource/Luminous_intensity Birlo Stella sbirlo@uni-bremen.de 0000-0003-0174-4901 Depth comp [mcd] Calendar age, mean Cal age mean ka BP Calculated, based on VT22 (Birlo et al., 2023) https://doi.org/10.5194/gchron-5-65-2023 Birlo Stella sbirlo@uni-bremen.de 0000-0003-0174-4901 Model D Cal age mean [ka BP] Calendar age, minimum/young Cal age min ka BP minimum young http://purl.obolibrary.org/obo/PATO_0000309 Time T http://dbpedia.org/resource/Time Calculated, based on VT22 (Birlo et al., 2023) https://doi.org/10.5194/gchron-5-65-2023 Birlo Stella sbirlo@uni-bremen.de 0000-0003-0174-4901 Model D Cal age min [ka BP] Calendar age, maximum/old Cal age max ka BP maximum old http://purl.obolibrary.org/obo/PATO_0000308 Time T http://dbpedia.org/resource/Time Calculated, based on VT22 (Birlo et al., 2023) https://doi.org/10.5194/gchron-5-65-2023 Birlo Stella sbirlo@uni-bremen.de 0000-0003-0174-4901 Model D Cal age max [ka BP] Relative absorption band depth, 620 nm RABD620 Measured Birlo Stella sbirlo@uni-bremen.de 0000-0003-0174-4901 RABD620 Relative absorption band depth, 671 nm RABD671 Measured Birlo Stella sbirlo@uni-bremen.de 0000-0003-0174-4901 RABD671 Relative absorption band depth, 845 nm RABD845 Measured Birlo Stella sbirlo@uni-bremen.de 0000-0003-0174-4901 RABD845 Chloropigments, per unit sediment mass Chloropigm/sed µg/g HSI index, calibrated Birlo Stella sbirlo@uni-bremen.de 0000-0003-0174-4901 Total Chloropigm/sed [µg/g] Bacteriopheopigments, per unit sediment mass Bacteriopheopig/sed µg/g Birlo Stella sbirlo@uni-bremen.de 0000-0003-0174-4901 Bacteriopheopig/sed [µg/g] CurationLevelC Enhanced curation https://wiki.pangaea.de/wiki/Curation_levels citable Eifel Holzmaar HSI Pigments XRF author10198 author104597 author11103 author80286 author89264 author89265 curlevel30 event3007189 geocode1599 geocode1600 geocode1601 geocode8128 journal6559 license21 method11443 method16163 method16661 method420 param143777 param143779 param2 param500824 param502790 param524830 param527611 param527999 param528000 param528001 param82445 pi89265 ref125444 term1073131 term1073892 term1081569 term38492 term41019 term43863 term43884 term43975 term47910 term50118 term647 term70866 term71485 term73771 topotype3