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Grain-size distribution of from different Holes of IODP Expedition 386
No full textThis dataset provides grain-size distributions for 278 sediment samples from 11 sediment cores targeting four event beds - Event Bed 1 (CE 2011 Tohoku-Oki), Event Bed 2 (CE 1456 Kyōtoku), Event Bed 3 (CE 869 Jogan), and Event Bed 4 (2.3 ka) - as well as intervening deposits (other event beds and hemipelagic background sediment) from four sites in three trench basins: Basins S3 (site M0091), C1 (site M0090), and C2 (sites M0089 and M0083). These grain-size data were used to build a facies sequence that is applied to identify and interpret event-bed deposition in a hadal trench environment. The sediment cores were collected using a giant piston corer (up to 40 m core length) and a trigger corer onboard R/V Kaimei during International Ocean Discovery Program (IODP) Expedition 386 "Japan Trench Paleoseismology" between 13 April and 1 June 2021. Grain-size data were generated using two complementary methods: laser diffraction with a Malvern Mastersizer 3000 at the Department of Geology (UIBK) and dynamic image analysis with a Camsizer X2 at the Disaster Prevention Research Institute (Kyoto University). Sampling followed two strategies: (i) systematic sampling at 1–2 cm intervals and (ii) site-specific sampling of selected coarse- and fine-grained facies of event beds and hemipelagic sediments. For the systematic dataset, Event Bed 2 was analyzed in one core (M0083D), and Event Bed 3 in six cores (M0091B, M0091D, M0090B, M0090D, M0083B, and M0083D). For the site-specific dataset, the four event beds were sampled in eleven cores (M0083B, M0083D, M0083F, M0089A, M0089B, M0089D, M0090A, M0090B, M0090D, M0091B, and M0091D). This compilation provides a reference dataset for refining facies models that advances event stratigraphy and improves global understanding of deep-marine sedimentary dynamics
Monospecific benthic foraminiferal trace metal and δ¹⁸O data from the North Atlantic during the mid-to-late Holocene (2-6 ka BP) and the Last Glacial Maximum (19-23 ka BP)
No full textContinuous water level observations at station BEFmate_S3low, 2020-01 to 2023-09
No full textData presented here were collected between 2020-01 and 2023-09 at station BEFmate_S3low within the research unit DynaCom (Spatial community ecology in highly dynamic landscapes: From island biogeography to metaecosystems, https://uol.de/dynacom/ ) involving the Universities of Oldenburg, Göttingen, and Münster, the iDiv Leipzig and the Nationalpark Niedersächsisches Wattenmeer. Experimental islands and saltmarsh enclosed plots were established in the back-barrier tidal flat and in the saltmarsh zone of the island of Spiekeroog (Germany). Groundwater levels at different elevation zones were measured using pressure loggers deployed in dip wells within the experimental islands as well as in the saltmarsh enclosed plots. Measurements were obtained using Hobo U20L Water Level Loggers (Onset Computer Corporation, Bourne, MA/USA). All devices were pre-calibrated by the manufacturer. Logged data were retrieved in the field using a Hobo Underwater Shuttle (U-DTW-1) and were read out with the HOBOware Pro (V3.7.28) software, Subsequent data processing was done using MATLAB (R2024b). Atmospheric pressure correction for water-level calculations was applied using data from a nearby weather station. Post-processing and quality control included (a) the removal of data covering maintenance activities, (b) an outlier detection, and (c) visual checks. Outliers in water level and temperature time series were detected using a moving-median filter and a 3-sigma criterion, with additional cross-checking against a reference sensor. Identified outliers were removed, and height-corrected water level series were produced to ensure consistency across sensors and years
Radiosonde raw data measured during POLARSTERN cruise PS135/1, links to files
No full textThe meteorological observatory Polarstern continuously performs radiosoundings during times of ship operation. Typically, there is one launch to full altitude at 12 UTC every day. Additionally, there often is a launch with a smaller balloon for forecasting purposes (helicopter operations) around 6 UTC. All data published here is left "as recorded", no quality control was applied
Radiosonde raw data measured during POLARSTERN cruise PS142, links to files
No full textThe meteorological observatory Polarstern continuously performs radiosoundings during times of ship operation. Typically, there is one launch to full altitude at 12 UTC every day. Additionally, there often is a launch with a smaller balloon for forecasting purposes (helicopter operations) around 6 UTC. All data published here is left "as recorded", no quality control was applied
Radiosonde raw data measured during POLARSTERN cruise PS146, links to files
No full textThe meteorological observatory Polarstern continuously performs radiosoundings during times of ship operation. Typically, there is one launch to full altitude at 12 UTC every day. Additionally, there often is a launch with a smaller balloon for forecasting purposes (helicopter operations) around 6 UTC. All data published here is left "as recorded", no quality control was applied
Continuous salinity observations at station BEFmate_S3upp, 2019-09 to 2021-07
No full textData presented here were collected between 2019-09 and 2021-07 at station BEFmate_S3upp within the research unit DynaCom (Spatial community ecology in highly dynamic landscapes: From island biogeography to metaecosystems, https://uol.de/dynacom/ ) involving the Universities of Oldenburg, Göttingen, and Münster, the iDiv Leipzig and the Nationalpark Niedersächsisches Wattenmeer. Experimental islands and saltmarsh enclosed plots were established in the back-barrier tidal flat and in the saltmarsh zone of the island of Spiekeroog (Germany). Salinity at different elevation zones was measured using conductivity loggers deployed in dip wells within experimental islands as well as in the saltmarsh enclosed plots. Measurements were obtained using HOBO U24 Conductivity Logger U24-002-C (Onset Computer Corporation, Bourne, MA/USA). All devices were pre-calibrated by the manufacturer. Logged data were retrieved in the field using a Hobo Underwater Shuttle (U-DTW-1) and were read out with the HOBOware Pro (V3.7.28) software. Salinity was derived in HOBOware Pro using temperature-dependent, nonlinear seawater conductivity compensation following the Practical Salinity Scale (PSS-78). Subsequent data processing was done using MATLAB (R2024b). Post-processing and quality control included (a) the removal of data covering maintenance activities, (b) the removal of implausible values using fixe thresholds (salinity > 40 psu and 35 °C and < -5 °C), c) an outlier detection using the Hampel filter method, and (d) visual checks. Identified outliers were removed and synchronously removed across all associated parameters (temperature and salinity)
