cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.1594/pangaea.918661
title: Soil erosion around Mt. Kilimanjaro

description: We compared the extent of soil erosion between maize and agroforestry farming systems through monitoring runoff and sediment loss processes on six representative plots along a mountain elevation gradient. Two plots, one under maize and another under agroforestry farming system, were established in each elevation zone. Under agroforestry, study plots with similar canopy types and composition were selected. We installed one erosion trap in each study plot. Erosion traps measuring 10 m length and 3 m wide were installed in each study plot. The erosion plot was carefully delineated using joined cement blocks (30 cm high.) without disturbing the soil surface and the vegetation. At the lower part of the trap, a triangle shape covered by a plastic sheet channeled the runoff through a PVC pipe to a 150 liter plastic barrel (Fig. 2). Rainfall gauges ware installed in the vicinity of each plot (50m) outside of tree and banana canopies. Since transport logistics could not allow us to attend erosion plots after every rainfall event, we scheduled our data collection exercise after every two days. Rainfall volume was measured by using a measuring cylinder whereas the volume of runoff was computed based on its height inside the barrel and the cross-sectional area of runoff and the bottom of the barrel. The runoff mixture was vigorously stirred before collection of 0.5 L sub-samples. Barrels were then cleaned up for the recording of the following runoff events. The collected samples were oven dried at 110 °C and reweighted until constant weight. Runoff and rainfall data were recorded on a cumulative basis for the whole observation period.
DOI: 10.1594/pangaea.919612
title: Radiocarbon dating of organic material from thick polygonal peatlands in Western Siberia

description: This data set has been updated on the 11.08.2020.
DOI: 10.1594/pangaea.919912
title: Links to master tracks in different resolutions of POLARSTERN cruise PS122/3, Arctic Ocean - Longyearbyen, 2020-02-24 - 2020-06-04

description: PLEASE NOTE: after initial publication of this master track it was noted that with the slow drift speeds during this campaign HYDRINS sensors is not usable as the Default Navigation Sensor. The master track has then been calculated using the Trimble GPS Receiver as Default Navigation Sensor. The new version has been uploaded, see "Replaced by" reference.
DOI: 10.1594/pangaea.919774
title: Arctic Ocean - multichannel seismic reflection profiles recorded during RV POLARSTERN cruise PS87

description: A set of multichannel seismic reflection lines across the southeastern Lomonosov Ridge and adjacent basins was collected in 2014 during RV Polarstern cruise ARK XXVIII/3 (PS87). The data provide constraints on the coupled evolution of ocean circulations, deposition regime and regional tectonic processes.The survey set-up for most lines comprised a streamer of 3000 m length (240 channels), and a 24-liter G-gun array. Shots were fired every 15 s resulting into a shot point spacing of 35-40 m. Data were recorded for 12 s at a sample rate of 1 ms. The seismic data processing comprised sorting in a CDP interval of 25 m (= max. fold 145), and velocity analysis (every 100 CDP = 2.5 km). Interval velocities for the seismic units are adopted from the stacking velocities. After the removal of noisy traces and spherical divergence correction the traces were stacked and migrated with a finite-difference time-migration. For a successful suppression of sea floor multiple an f-k filter was applied. In general, the data were filtered with a band pass of 10 - 90 Hz, and an automatic gain control with a gate length of 1000 ms was applied. The dominant frequency of the seismic signals is about 35 Hz, which enables a maximum vertical resolution of about 11-18 m across the sedimentary units. A marked low-frequency reflector with reversed polarity parallels the sea floor at shallow water depths of 190 ms TWT (150 m). The signal turned out to be an arctefact, and in some parts the amplitude strength was succesfully attenuated by a designature filter.The presented data-set provides migrated seismic reflection seismic lines in segy-format.
DOI: 10.1594/pangaea.919775
title: Structural grain parameters from image analysis of large area scan macroscope images from the NEEM ice core

description: Grain parameters (size and shape) are derived by extraction and parametrisation of grain boundary networks from large area scan macroscope images from the NEEM ice core. Images have been taken in reflecting light (LASM) in the NEEM camp on the freshly drilled core, prepared as polished thick sections. A dedicated method of automatic image analysis was developed by Tobias Binder (PhD DFG-funded, 2014, AWI, Bremerhaven and IWR, Heidelberg) and applied to the images.Grain size and shape parameters, if based on reliable statistics viz. several hundreds of grains per section, help to characterise "shape preferred orientation" (SPO) as complementary information to crystal preferred orientation measurements (CPO or fabrics) with respect to the solid state deformation of polar ice.
DOI: 10.1594/pangaea.919777
title: AMSR-E ASI sea ice concentration data, Arctic, version 5.4 (NetCDF) (June 2002 - September 2011)

description: The sea ice concentration product from the University of Bremen, Institute of Environmental Physics (IUP), has been retrieved with the ARTIST Sea Ice (ASI) algorithm, applied to microwave radiometer data of the sensor AMSR-E (Advanced Microwave Scanning Radiometer for EOS) on the NASA satellite Aqua. The data are gridded on a polar stereographic grid (EPSG code 3411, Arctic) with 6.25 km grid resolution.After the failure of AMSR-E in 2011, the ASI algorithm has been applied to the data of the sensor AMSR2 (Advanced Microwave Scanning Radiometer 2) on the JAXA satellite GCOM-W1 (see the datasets of sea ice concentration from AMSR2). This means that sea ice concentration data have been almost continuously produced since 2002, using AMSR-E data from 2002 until 2011 (this data set), and AMSR2 data since 2012. As several details of the processing chain have changed over the years, in 2018, all ASI ice concentration data for the Arctic and Antarctic based on AMSR-E and AMSR2 have been reprocessed with exactly the same parameters, settings and software. The result are ASI data, version 5.4. The details are explained in the ASI User Guide (https://seaice.uni-bremen.de/fileadmin/user_upload/ASIuserguide.pdf).
description: NOTE: This is the updated version of doi:10.1594/PANGAEA.899090
DOI: 10.1594/pangaea.919929
title: Cropland cover over the past 300 years in the Scandinavian area

description: High-resolution historical land cover datasets are essential not only for simulations of climate and environmental dynamics, but also for projections of future land use, food security, climate and biodiversity. However, widely used global datasets are developed for continental-to-global scale analysis and simulations and the accuracy of global datasets depends on the verification of more regional reconstruction results. Based on the collected statistics of cropland area of each administrative unit (Parish/County/Municipality/Province) in Scandinavia (Sweden, Norway and Denmark) from 1690 to 2015 (Time points are 1690, 1750, 1810, 1875, 1810, 1930, 1950, 1980, 1999 and 2015), the cropland area at the administrative unit level was allocated into 30-arc second grid cells.
DOI: 10.1594/pangaea.920005
title: A composite flow law to model deformation in the NEEM deep ice core, Greenland - The role of grain size, grain size distribution and premelting on ice deformation

description: Results from a rheological model based on the composite flow law of Goldsby and Kohlstedt (1997, 2001) applied to mean grain size and grain size distributions in the North Greenland Eemian Ice Drilling (NEEM) deep ice core predict that grain-size-sensitive flow produces almost all of the deformation in the upper 2207 m, while dislocation creep hardly contributes to deformation. The difference in calculated strain rate between two model end-members is relatively small: (i) the micro-scale constant stress model where each grain deforms by the same stress and (ii) the micro-scale constant strain rate model where each grain deforms by the same strain rate. The predicted strain rate in the fine-grained Glacial ice (that is, ice deposited during the Last Glacial Maximum now at depths of 1419 to 2207 m) varies strongly within this depth range. Predicted strain rate is about 4-5 times higher than in the coarser-grained Holocene ice (0-1419 m). Two peaks in strain rate are predicted at about 1980 and 2100 m of depth. See also interpretations in publication (Kuiper et al. 2020 TC).
DOI: 10.1594/pangaea.921052
title: Basic measurements of radiation at station Sonnblick (2020-06)
DOI: 10.1594/pangaea.921083
title: Basic and other measurements of radiation at station Ny-Ålesund (2020-06)
DOI: 10.1594/pangaea.920120
title: Carbon and oxygen isotope data for planktonic foraminifera from ODP Site 198-1209, ODP Site 113-690, and DSDP Site 48-401
DOI: 10.1594/pangaea.920149
title: Catalog numbers for foraminifera specimens from ODP Site 198-1209 stored at the Yale Peabody Museum
DOI: 10.1594/pangaea.922354
title: Historical K index values from observatory ASH (Ashkhabad (Vannovskaya)), 1958-1991
DOI: 10.1594/pangaea.922355
title: Historical K index values from observatory CCS (Cape Chelyuskin), 1957-1992
DOI: 10.1594/pangaea.923314
title: Particulate geochemistry of sediment core M77/1_464-K1
DOI: 10.1594/pangaea.922356
title: Historical K index values from observatory CWE (Cape Wellen), 1957-1992
DOI: 10.1594/pangaea.922357
title: Historical K index values from observatory DIK (Dikson (Dixon)), 1957-1992
DOI: 10.1594/pangaea.922359
title: Historical K index values from observatory IRT (Irkutsk (Patrony)), 1957-1992
DOI: 10.1594/pangaea.922360
title: Historical K index values from observatory KGD (Karaganda (Bereznyaki)), 1973-1981, 1983-1990
DOI: 10.1594/pangaea.922361
title: Historical K index values from observatory KIV (Kiev (Dymer)), 1958-1991
DOI: 10.1594/pangaea.922362
title: Historical K index values from observatory KNG (Kaliningrad), 1977-1981, 1983-1992
DOI: 10.1594/pangaea.922363
title: Historical K index values from observatory KZN (Kazan (Zaymishe)), 1957-1992
DOI: 10.1594/pangaea.922364
title: Historical K index values from observatory LNN (Leningrad (Voyeykovo)), 1957-1992
DOI: 10.1594/pangaea.922367
title: Historical K index values from observatory MIR (Mirny), 1957-1981, 1983-1990
DOI: 10.1594/pangaea.922368
title: Historical K index values from observatory MMK (Loparskaya (Murmansk)), 1957-1993
DOI: 10.1594/pangaea.922369
title: Historical K index values from observatory MNK (Minsk (Pleshchenicy)), 1962-1981, 1983-1991
DOI: 10.1594/pangaea.922370
title: Historical K index values from observatory MOL (Molodezhnaya), 1975-1981, 1983-1990
DOI: 10.1594/pangaea.922371
title: Historical K index values from observatory MOS (Moscow (Krasnaya Pakhra)), 1949-1992
DOI: 10.1594/pangaea.922372
title: Historical K index values from observatory NKK (Novokazalinsk), 1973-1981, 1983-1990
DOI: 10.1594/pangaea.922373
title: Historical K index values from observatory NVL (Novolazarevskaya), 1973-1981, 1983-1988
DOI: 10.1594/pangaea.922374
title: Historical K index values from observatory NVS (Novosibirsk), 1969-1992
DOI: 10.1594/pangaea.922376
title: Historical K index values from observatory ODE (Odessa (Stepanovka)), 1957-1981, 1983-1991
DOI: 10.1594/pangaea.922379
title: Historical K index values from observatory POD (Podkamennaya Tunguska), 1969-1971, 1974-1992
DOI: 10.1594/pangaea.922380
title: Historical K index values from observatory SRE (Srednikan), 1957-1966
DOI: 10.1594/pangaea.922381
title: Historical K index values from observatory SVD (Sverdlovsk (Vysokaya Dubrava)), 1957-1977
DOI: 10.1594/pangaea.922187
title: Basic and other measurements of radiation at station Ny-Ålesund (2020-07)
DOI: 10.1594/pangaea.922189
title: Basic measurements of radiation at station Sonnblick (2020-07)
DOI: 10.1594/pangaea.922209
title: Historical K index data collection of Soviet magnetic observatories, 1957-1992: overview, by observatory

description: The presented collection includes the results of the K index determination at 41 geomagnetic observatories of the former USSR for the period from July 1957 to early 1990s. This unique collection was formed at the World Data Center for Solar-Terrestrial Physics in Moscow. The historical data, which are offered to the international scientific community, cover the second half of the 20th century and can be used for retrospective analysis and study of geomagnetic events in the past as well as for data validation or forecasting.
DOI: 10.1594/pangaea.922232
title: Historical K index values from observatory AAA (Alma- Ata),1964-1981, 1983-1992
DOI: 10.1594/pangaea.922382
title: Historical K index values from observatory TFS (Tbilisi (Dusheti)), 1957-1991
DOI: 10.1594/pangaea.922385
title: Historical K index values from observatory TKT (Tashkent (Yangi Bazar)), 1957-1991
DOI: 10.1594/pangaea.922386
title: Historical K index values from observatory TMK (Tomsk), 1958-1970
DOI: 10.1594/pangaea.923315
title: Particulate geochemistry of sediment core M77/1_464-K2
DOI: 10.1594/pangaea.923317
title: Particulate geochemistry of sediment core M77/1_474-K1
DOI: 10.1594/pangaea.922387
title: Historical K index values from observatory UBA (UlanBator), 1973-1975, 1978-1980, 1983-1989
DOI: 10.1594/pangaea.923318
title: Particulate geochemistry of sediment core M77/1_474-K2
DOI: 10.1594/pangaea.922388
title: Historical K index values from observatory VLA (Vladivostok (Gornotayozhnaya)), 1957-1981, 1983-1988, 1990
DOI: 10.1594/pangaea.923319
title: Particulate geochemistry of sediment core M77/1_526-K2
DOI: 10.1594/pangaea.922389
title: Historical K index values from observatory VOS (Vostok), 1958-1981, 1983-1990
DOI: 10.1594/pangaea.923320
title: Particulate geochemistry of sediment core M77/1_544-K1
DOI: 10.1594/pangaea.922391
title: Historical K index values from observatory YAK (Yakutsk), 1957-1991
DOI: 10.1594/pangaea.923321
title: Particulate geochemistry of sediment core M77/1_566-K1
DOI: 10.1594/pangaea.923322
title: Particulate geochemistry of sediment core M77/1_568-K1
DOI: 10.1594/pangaea.922402
title: Historical K index values from observatory LVV (Lvov), 1957-1991
DOI: 10.1594/pangaea.922405
title: Historical K index values from observatory HIS (Heiss Island (Druzhnaya)), 1957-1992
DOI: 10.1594/pangaea.923687
title: Spatial survey 1 at the Shark River estuary in the Everglades National Park, Florida
DOI: 10.1594/pangaea.923695
title: Spatial survey 2 at the Shark River estuary in the Everglades National Park, Florida
DOI: 10.1594/pangaea.923353
title: Trail Valley Creek, NWT, Canada Soil Moisture and Temperature 2016
DOI: 10.1594/pangaea.923708
title: Upstream time series at Gunboat Island from the Everglades National Park, Florida
DOI: 10.1594/pangaea.923354
title: Trail Valley Creek, NWT, Canada Soil Moisture and Temperature 2017
DOI: 10.1594/pangaea.923714
title: Downstream time series at Shark River from the Everglades National Park, Florida
DOI: 10.1594/pangaea.923355
title: Trail Valley Creek, NWT, Canada Soil Moisture and Temperature 2018
DOI: 10.1594/pangaea.922949
title: Basic and other measurements of radiation at station Ny-Ålesund (2020-08)
DOI: 10.1594/pangaea.923356
title: Trail Valley Creek, NWT, Canada Soil Moisture and Temperature 2019
DOI: 10.1594/pangaea.923264
title: Position measurements at GNSS station SMR5 in 2018 with links to TRIMBLE binary data files

description: SMR5 GNSS long-term raw-data series is aimed at contributing to the scientific research of Earth-System-involved global- as well as Antarctic-regional processes, improving International Terrestrial Reference Frame (ITRF) redefinitions, and benefiting society through enhanced GNSS-derived applications and services. The dataset was gathered at the Argentinean (Antarctic) research station San Martín in the year 2018. Approximate position in ITRF2014 frame at epoch 2018.5: X=927077.19m, Y=-2195043.58m, Z=-5896521.11m or in (GRS80) ellipsoidal coordinates: lat=68°07'46.852"S, lon=067°06'11.604"W, h=26.8m, orthometric height above EGM2008 geoid amounts 17.3m. GNSS receiver: TRIMBLE NetR9 (SN: 5226K50357), GNSS antenna: Zephyr Geodetic 2 w/Dome, PN: 57971-00 (SN: 30976593), Sampling interval: 1 second. Each file covers a time period of one day. Original binary files are of TRIMBLE proprietary format T02. The files of one day have been combined applying UNIX tool "tar".
DOI: 10.1594/pangaea.923265
title: Position measurements at GNSS station SMR5 in 2019 with links to TRIMBLE binary data files

description: SMR5 GNSS long-term raw-data series is aimed at contributing to the scientific research of Earth-System-involved global- as well as Antarctic-regional processes, improving International Terrestrial Reference Frame (ITRF) redefinitions, and benefiting society through enhanced GNSS-derived applications and services. The dataset was gathered at the Argentinean (Antarctic) research station San Martín in the year 2019. Approximate position in ITRF2014 frame at epoch 2019.5: X=927077.19m, Y=-2195043.58m, Z=-5896521.11m or in (GRS80) ellipsoidal coordinates: lat=68°07'46.852"S, lon=067°06'11.604"W, h=26.8m, orthometric height above EGM2008 geoid amounts 17.3m. GNSS receiver: TRIMBLE NetR9 (SN: 5226K50357), GNSS antenna: Zephyr Geodetic 2 w/Dome, PN: 57971-00 (SN: 30976593), Sampling interval: 1 second. Each file covers a time period of one day. Original binary files are of TRIMBLE proprietary format T02. The files of one day have been combined applying UNIX tool "tar" to a day-archive.
DOI: 10.1594/pangaea.924668
title: Links to master tracks in different resolutions of POLARSTERN cruise PS122/1, Tromsø - Arctic Ocean, 2019-09-20 - 2019-12-13 (Version 2)

description: Raw data acquired by position sensors on board RV Polarstern during expedition PS122_1 was processed to receive a validated master track which can be used as reference of further expedition data. During PS122_1 two Trimble Marine SPS461 GPS receivers and the iXBlue HYDRINS hydrographic survey inertial navigation system were used as navigation sensors. Data were downloaded from DAVIS SHIP data base (https://dship.awi.de) with a resolution of 1 sec. Processing and evaluation of the data is outlined in the data processing report found at EPIC repository https://hdl.handle.net/10013/epic.14eb801d-744f-4467-9c6a-3bd72ef41fd3. Processed data are provided as a master track with 1 sec resolution derived from the position sensors' data selected by priority and a generalized track with a reduced set of the most significant positions of the master track.
description: This dataset contains the master track in 10 min resolution, for other resolutions please see "Further details" and Other version" references. Version 2, with an improved processing compared to V1.
DOI: 10.1594/pangaea.924674
title: Links to master tracks in different resolutions of POLARSTERN cruise PS122/2, Arctic Ocean - Arctic Ocean, 2019-12-13 - 2020-02-24 (Version 2)

description: Raw data acquired by position sensors on board RV Polarstern during expedition PS122_2 was processed to receive a validated master track which can be used as reference of further expedition data. During PS122_2 two Trimble Marine SPS461 GPS receivers and the iXBlue HYDRINS hydrographic survey inertial navigation system were used as navigation sensors. Data were downloaded from DAVIS SHIP data base (https://dship.awi.de) with a resolution of 1 sec. Processing and evaluation of the data is outlined in the data processing report found at EPIC repository https://hdl.handle.net/10013/epic.1fdb256e-7b9c-4b61-9fbb-3e0dcf9d10ad. Processed data are provided as a master track with 1 sec resolution derived from the position sensors' data selected by priority and a generalized track with a reduced set of the most significant positions of the master track.
description: This dataset contains the master track in 10 min resolution, for other resolutions please see "Further details" and Other version" references. Version 2, with an improved processing compared to V1.
DOI: 10.1594/pangaea.923915
title: Position measurements at GNSS station SMR5 in 2017 with links to TRIMBLE binary data files

description: SMR5 GNSS long-term raw-data series is aimed at contributing to the scientific research of Earth-System-involved global- as well as Antarctic-regional processes, improving International Terrestrial Reference Frame (ITRF) redefinitions, and benefiting society through enhanced GNSS-derived applications and services. The dataset was gathered at the Argentinean (Antarctic) research station San Martín in the year 2017. Approximate position in ITRF2014 frame at epoch 2017.5: X=927077.16m, Y=-2195043.57m, Z=-5896521.11m or in (GRS80) ellipsoidal coordinates: lat=68°07'46.852"S, lon=067°06'11.607"W, h=26.8m, orthometric height above EGM2008 geoid amounts 17.3m. GNSS receiver: TRIMBLE NetR9 (SN: 5226K50357), GNSS antenna: Zephyr Geodetic 2 w/Dome, PN: 57971-00 (SN: 30976593), Sampling interval: 1 second. Each file covers a time period of one day. Due to harsh environmental conditions the data acquisition between DOY 045 and 084 was interrupted and dataset consists of 327 day files only. Original binary files are of TRIMBLE proprietary format T02. The files of one day have been combined applying UNIX tool "tar".
DOI: 10.1594/pangaea.923916
title: Position measurements at GNSS station SMR5 in 2016 with links to TRIMBLE binary data files

description: SMR5 GNSS long-term raw-data series is aimed at contributing to the scientific research of Earth-System-involved global- as well as Antarctic-regional processes, improving International Terrestrial Reference Frame (ITRF) redefinitions, and benefiting society through enhanced GNSS-derived applications and services. The dataset was gathered at the Argentinean (Antarctic) research station San Martín in the year 2016. Approximate position in ITRF2014 frame at epoch 2016.5: X=927077.14m, Y=-2195043.57m, Z=-5896521.11m or in (GRS80) ellipsoidal coordinates: lat=68°07'46.853"S, lon=067°06'11.608"W, h=26.8m, orthometric height above EGM2008 geoid amounts 17.3m. GNSS receiver: TRIMBLE NetR9 (SN: 5226K50357), GNSS antenna: Zephyr Geodetic 2 w/Dome, PN: 57971-00 (SN: 30976593), Sampling interval: 1 second. Each file covers a time period of one day. Original binary files are of TRIMBLE proprietary format T02. The files of one day have been combined applying UNIX tool "tar".
DOI: 10.1594/pangaea.923917
title: Position measurements at GNSS station SMR5 in 2015 with links to TRIMBLE binary data files

description: SMR5 GNSS long-term raw-data series is aimed at contributing to the scientific research of Earth-System-involved global- as well as Antarctic-regional processes, improving International Terrestrial Reference Frame (ITRF) redefinitions, and benefiting society through enhanced GNSS-derived applications and services. The dataset was gathered at the Argentinean (Antarctic) research station San Martín in the year 2015. Approximate position in ITRF2014 frame at epoch 2015.5: X=927077.12m, Y=-2195043.57m, Z=-5896521.12m or in (GRS80) ellipsoidal coordinates: lat=68°07'46.853"S, lon=067°06'11.609"W, h=26.8m, orthometric height above EGM2008 geoid amounts 17.3m. GNSS receiver: TRIMBLE NetR9 (SN: 5226K50357), GNSS antenna: Zephyr Geodetic 2 w/Dome, PN: 57971-00 (SN: 30976593), Sampling interval: 1 second. Each file covers a time period of one day. Due to harsh environmental conditions the data acquisition between DOY 176 and 209 was interrupted and dataset consists of 333 day files only. Original binary files are of TRIMBLE proprietary format T02. The files of one day have been combined applying UNIX tool "tar" to a day-archive.
DOI: 10.1594/pangaea.924819
title: Historical K index values from observatory HIS (Heiss Island (Druzhnaya)), 1957-1992, version 2
DOI: 10.1594/pangaea.924862
title: Basic measurements of radiation at station Sonnblick (2020-08)
DOI: 10.1594/pangaea.924865
title: Basic measurements of radiation at station Sonnblick (2020-09)