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Chironomidae-inferred late Holocene water level reconstruction from the alas lake (AL1 profile) in the Yana-Indigirka Lowland, NE Yakutia
No full textThis data set presents the reconstructed water level for AL1 sediment core based on subfossil Chironomidae data. The core was collected in July 2019 from from the lower alas level, approximately 1.5 km north of the Berelekh River (70.84057° N, 147.48369° E). It was taken from the active layer as a monolith using a Russian auger and was subsequently cut into 1-cm slices in the laboratory of the Chokurdakh Scientific Tundra Station. Water depth was reconstructed using the East-Siberian chironomid-based inference model (WA-PLS, 1 component; r2 boot = 0.62; RMSEP = 0.35) based on a modern calibration dataset of 150 lakes from Yakutia (Nazarova et al., 2011). To determine whether the modern calibration model had adequate analogues for the fossil assemblages, the modern analogue technique (MAT) was performed using C2 version 1.7.7 (Juggins, 2007) on percentage, square-root-transformed data. The distance between each fossil sample and its most similar modern assemblage was compared, and the 5th percentile of all squared-chord distances of the modern data was used to define the cut-off for a good analogue (Plikk et al., 2019)
Neodymium isotope of fossil fish teeth from ODP Site 181-1123
No full textThe table presents the 143Nd/144Nd ratios measured from fossil fish teeth at ODP Sites 181-1123, together with corresponding sample identifiers, depths, and ages. These ratios were converted to εNd values using a chondritic reference of 143Nd/144Nd = 0.512638. All analyses were conducted using MC-ICP-MS at the State Key Laboratory of Marine Geology, Tongji University
Neodymium isotope of fossil fish teeth from ODP Site 198-1208
No full textThe table presents the 143Nd/144Nd ratios measured from fossil fish teeth at ODP Site 198-1208, together with corresponding sample identifiers, depths, and ages. These ratios were converted to εNd values using a chondritic reference of 143Nd/144Nd = 0.512638. All analyses were conducted using MC-ICP-MS at the State Key Laboratory of Marine Geology, Tongji University
Master track of Eugen Seibold cruise ES23C05, Panama City - Panama City, 2023-03-15 - 2023-03-15
No full textThis dataset contains the validated master track of the S/Y Eugen Seibold during expedition ES23C05, with a time resolution of about 10 seconds. This master track can be used as reference for further expedition data. For creating the master track, the 1-second resolution raw data acquired by the GPS position sensor on board S/Y Eugen Seibold were processed, averaging latitude and longitude within equidistant 10-second intervals. Quality control was performed visually and by checking the maximum speed calculated between neighbouring positions. In case of unrealistically high speeds, data points have been removed
CIM-ECIMAT ocean meteorological station time-series 2019-2024 - physical oceanography data
No full textWe present a five-year dataset (2019-2024) collected at the CIM-ECIMAT automatic station at the University of Vigo. The data includes a time series of seawater temperature, conductivity, and dissolved oxygen. The sampling interval was ten minutes. This dataset continues the series published in https://doi.org/10.1594/PANGAEA.91603
Continuous water level observations at station BEFmate_I4low, 2020-01 to 2023-04
No full textData presented here were collected between 2020-01 and 2023-04 at station BEFmate_I4low 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 a DEFI-D Miniature Pressure Recorder (JFE Advantech Co., Ltd., Tokyo; DEFI-D). 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 DEFI Series software (V1.02), depending on the instrument. 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 PS134, 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 PS139/2, 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