cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.5880/isg.2007.001
title: The Uruguayan gravimetric quasi-geoid: UruQGeoide2007

description: The Uruguayan gravimetric quasi-geoid model UruQGeoide2007 was calculated by the Military Geographic Service (SGM) in 2007. The extent is from 29° S to 36° S in latitude and 52° W to 60° W in longitude, with a grid resolution of 1´ x 1´. The geodetic reference system is WGS84. The computation was based on the remove-restore procedure, using 8433 gravity observations from stations in Argentina, Brasil and Uruguay, 9172 marine free-air gravity anomalies from the KMS02 model, the GGM02C geopotential model, the SRTM terrain model and the DNSC05 bathymetric model. The reduced height anomalies were computed from the reduced gravity anomalies by Stokes integration via spherical Fast Fourier Transform and the quasi-geoid model was finally obtained by adding back the residual terrain model effects and the contribution of the global geopotential model. 
 
The geoid model is provided in ISG format 2.0 (ISG Format Specifications), while the file in its original data format is available at the model ISG webpage.
description: The International Service for the Geoid (ISG) was founded in 1992 (as International Geoid Service - IGeS) and it is now an official service of the International Association of Geodesy (IAG), under the umbrella of the International Gravity Field Service (IGFS). The main activities of ISG consist in collecting, analysing and redistributing local and regional geoid models, as well as organizing international schools on the geoid determination (Reguzzoni et al., 2021).
DOI: 10.5880/isg.2007.002
title: The Uruguayan gravimetric geoid: UruGeoide2007

description: The Uruguayan gravimetric geoid model UruGeoide2007 was calculated by the Military Geographic Service (SGM) in 2007. The extent is from 29° S to 36° S in latitude and 52° W to 60° W in longitude, with a grid resolution of 1´ x 1´. The geodetic reference system is WGS84. The computation was based on the remove-restore procedure, using 8433 gravity observations from stations in Argentina, Brasil and Uruguay, 9172 marine free-air gravity anomalies from the KMS02 model, the GGM02C geopotential model, the SRTM terrain model and the DNSC05 bathymetric model. The reduced height anomalies were computed from the reduced gravity anomalies by Stokes integration via spherical Fast Fourier Transform. After adding back the residual terrain model effects and the contribution of the global geopotential model, the obtained quasi-geoid was transformed into a geoid model by using a Bouguer anomaly grid, even if the difference between the two models is 1 cm at most. 
 
The geoid model is provided in ISG format 2.0 (ISG Format Specifications), while the file in its original data format is available at the model ISG webpage.
description: The International Service for the Geoid (ISG) was founded in 1992 (as International Geoid Service - IGeS) and it is now an official service of the International Association of Geodesy (IAG), under the umbrella of the International Gravity Field Service (IGFS). The main activities of ISG consist in collecting, analysing and redistributing local and regional geoid models, as well as organizing international schools on the geoid determination (Reguzzoni et al., 2021).
DOI: 10.5880/fidgeo.2023.033
title: Forearc on-shore receiver functions, station subsurface models, and fitted slab model for Cascadia (North America)

description: This data publication contains (i) a slab model of the Cascadia subduction zone, derived from receiver functions, parameterized as depth to the three interfaces: t (top), c (central) and m (Moho), in NetCDF format; (ii) the station measurements of all parameters in the model in tabular and Raysum model file format; (iii) the raw receiver functions in SAC format; and (iv) auxiliary scripts for loading and plotting the data. A total of 45,601 individual receiver functions recorded at 298 seismic stations distributed across the Cascadia forearc contributed to the slab model. For each station, 100 s recordings symmetric about the P -wave arrival (i.e. 50 s noise and 50 s signal) of earthquakes with magnitudes between 5.5 and 8, in the distance range between 30 and 100 degree, were downloaded from the Incorporated Research Institutions for Seismology (IRIS) data center, the Northern California Earthquake Data Center (NCEDC), and the Natural Resources Canada Data Center (NRCAN). After quality control, radial and transverse receiver functions were computed through frequency-domain simultaneous deconvolution, with an optimal damping factor found through generalized cross validation. The continental forearc and subducting slab were parameterized as three layers over a mantle half-space, with the subduction stratigraphy bounding interfaces labeled as t (top), c (central) and m (Moho). Synthetic receiver functions were calculated through ray-theoretical modeling of plane-wave scattering at the model interfaces. The thickness, S -wave velocity (VS) and P - to S -wave velocity ratio (VP/VS) of each layer, as well as the common strike and dip of the bottom two layers and the top of the half space (in total 11 parameters) were optimized simultaneously through a simulated annealing global parameter search scheme. The misfit was defined as the anti-correlation (1 minus the cross-correlation coefficient) between the observed and predicted receiver functions, bandpass filtered between 2 and 20 s period duration. In total, 171, 143 and 137 quality A nodes were determined to constrain the t, c and m interfaces, respectively. At the trench, 105 nodes at 3 km below the local bathymetry were inserted to constrain the t and c interfaces, and at 6.5 km deeper to constrain the m interface, representing typical sediment and igneous crustal thicknesses. A spline surface was fitted to these nodes to yield margin-wide depth models. The spline coefficients were found using singular value decomposition, with the nominal depth uncertainties supplied as weights. The solution was damped by retaining the 116, 117, and 116 largest singular values for the t, c and m interfaces, respectively, based on analysis of L-curves and the Akaike information criterion. The data set is the supplemental material to Bloch, W., Bostock, M. G., Audet, P. (2023) A Cascadia Slab Model from Receiver Functions. Geochemistry, Geophysics, Geosystems.
DOI: 10.5880/icgem.2019.007
title: The experimental gravity field model XGM2019e

description: XGM2019e is a combined global gravity field model represented through spheroidal harmonics up to d/o 5399, corresponding to a spatial resolution of 2’ (~4 km). As data sources it includes the satellite model GOCO06s in the longer wavelength area combined with terrestrial measurements for the shorter wavelengths. The terrestrial data itself consists over land and ocean of gravity anomalies provided by courtesy of NGA (identical to XGM2016, having a resolution of 15’) augmented with topographically derived gravity over land (EARTH2014). Over the oceans, gravity anomalies derived from satellite altimetry are used (DTU13, in consistency with the NGA dataset). The combination of the satellite data with the terrestrial observations is performed by using full normal equations up to d/o 719 (15’). Beyond d/o 719, a block-diagonal least-squares solution is calculated for the high-resolution terrestrial data (from topography and altimetry). All calculations are performed in the spheroidal harmonic domain. In the spectral band up to d/o 719 the new model shows over land a slightly improved behavior over preceding models such as XGM2016, EIGEN6c4 or EGM2008 when comparing it to independent GPS leveling data. Over land and in the spectral range above d/o 719 the accuracy of XGM2019e suffers from the sole use of topographic forward modelling; Hence, errors are increased in well-surveyed areas compared to models containing real gravity data, e.g. EIGEN6c4 or EGM2008. However, the performance of XGM2019e can be considered as globally more homogeneous and independent from existing high resolution global models. Over the oceans the model exhibits an improved performance throughout the complete spectrum (equal or better than preceding models).
DOI: 10.5281/zenodo.17098550
title: Eine Erzählung als Denkmal: Internetquellen

description: Der Datensatz enthält die in der Publikation Eine Erzählung als Denkmal. Die Methode der narrativen Rekonstruktion am Beispiel des Raumflug-Planetariums „Sigmund Jähn“ in Halle an der Saale zitierten Internetquellen, die zum Zeitpunkt der Veröffentlichung der Druckfassung nicht mehr online verfügbar waren. Erfasst sind Blog-Einträge und folgende Online-Medien, die über den stadtpolitischen Konflikt in Halle (Saale) um den Abbruch des Raumflug-Planetariums berichtet hatten: Saale Kurier OnlineHalle Spektrumgeoobserver.wordpress.com
description: The data set contains the internet sources cited in the publication Eine Erzählung als Denkmal. Die Methode der narrativen Rekonstruktion am Beispiel des Raumflug-Planetariums „Sigmund Jähn“ in Halle an der Saale, which were no longer available online at the time of publication of the print version. It includes blog entries and the following online media that reported on the urban political conflict in Halle (Saale) surrounding the demolition of the space flight planetarium:Saale Kurier OnlineHalle Spektrumgeoobserver.wordpress.com
DOI: 10.5281/zenodo.17098551
title: Eine Erzählung als Denkmal: Internetquellen

description: Der Datensatz enthält die in der Publikation Eine Erzählung als Denkmal. Die Methode der narrativen Rekonstruktion am Beispiel des Raumflug-Planetariums „Sigmund Jähn“ in Halle an der Saale zitierten Internetquellen, die zum Zeitpunkt der Veröffentlichung der Druckfassung nicht mehr online verfügbar waren. Erfasst sind Blog-Einträge und folgende Online-Medien, die über den stadtpolitischen Konflikt in Halle (Saale) um den Abbruch des Raumflug-Planetariums berichtet hatten: Saale Kurier OnlineHalle Spektrumgeoobserver.wordpress.com
description: The data set contains the internet sources cited in the publication Eine Erzählung als Denkmal. Die Methode der narrativen Rekonstruktion am Beispiel des Raumflug-Planetariums „Sigmund Jähn“ in Halle an der Saale, which were no longer available online at the time of publication of the print version. It includes blog entries and the following online media that reported on the urban political conflict in Halle (Saale) surrounding the demolition of the space flight planetarium:Saale Kurier OnlineHalle Spektrumgeoobserver.wordpress.com
DOI: 10.5880/gfz.2.3.2024.001
title: CHAMP ME Orbit Counter

description: This dataset is an add-on to the CHAMP Level 3 Magnetic/Electric Field (ME) data files of the `LEO' satellite 'CHAMP'. It contains the date, time and location of the CHAMP satellite when crossing the equator in ascending direction. The data has been derived from high precision GPS position measurements (RSO and PDO). Small gaps have been interpolated, larger gaps have been filled using orbit prediction from NASA Space Physics Data Facility (SPDF). The file format is CDF (NASA CDF) and contains all meta data for description, the content is an extended version of the SW_OPER_AUXAORBCNT product from Swarm satellite mission. Magnetic local time (MLT) at the equator crossing has been calculated using Emmert et. al (2010).
DOI: 10.5880/gfz.1.4.2024.005
title: Administrative boundaries of selected certified International Dark Sky Places

description: This is a publication of maps of areas certified as "International Dark Sky Places" (IDSP) by DarkSky International (formerly the International Dark-Sky Association). The maps are provided as shapefiles. IDSP are areas where communities or responsibles (e.g. park managers) have taken steps to ensure the protection of the night sky from light pollution. They satisfy minimum criteria regarding the level of light pollution, but having a light-pollution free sky (e.g. in the desert) isn't sufficient for certification. The borders presented in the map are based on the IDSP applications, which are available from DarkSky International's website (under "Documents &gt; Application" on each Place's webpage). In some cases, the IDSP managers were able to provide a digital boundary file. In others, the digital boundary was created by georeferencing a map from the application, which varied in quality. All boundaries in this file should therefore be considered approximate, and DarkSky International or the Place manager should be contacted in case of questions or discrepancies. The boundaries in this file are as of June, 2024. Most boundaries have been checked and approved by the Place managers. However, once again, this file should not be considered the authoritative definition of the boundary, and boundaries are potentially subject to change.
DOI: 10.5880/pik.2018.008
title: PISM simulation results of the Antarctic Ice Sheet deglaciation

description: This dataset contains PISM simulation results (http://www.pism-docs.org) of the Antarctic Ice Sheet based on code release pik-holocene-gl-rebound: http://doi.org/10.5281/zenodo.1199066 . With the help of added python scripts, Fig. 3 and other model related extended data figures can be reproduced as in the journal publication: Kingslake, Scherer, Albrecht et al. (2018, http://dx.doi.org/10.1038/s41586-018-0208-x).
description: PISM is the open-source Parallel Ice Sheet Model developed mainly at UAF, USA and PIK, Germany.Plottings scripts for figures in 'plot_scripts' access the uploaded PISM results (netCDF data) and save them to 'final_figures'. The bash script 'preprocessing.sh' downloads and converts forcing input data for the plots based on https://github.com/pism/pism-ais. See README.md for information on experiment (ensemble numbers) and information on access of input data.
DOI: 10.5880/gfz.2.3.2024.004
title: Swarm small-scale field-aligned current (FAC): dual-satellite method

description: The Swarm (ESA's Earth Observation constellation mission) Level 2 time series of field-aligned and radial current densities along the orbit using the dual-satellite method for the Swarm lower satellite pair A and C are provided. Field-aligned current (FAC) density is derived by multiplying the radial current (IRC) density with the inclination angle of the geomagnetic field. This can be calculated for latitudes where the magnetic field is well inclined (|I| &gt; 30°). In areas near the magnetic equator where the magnetic inclination angle is less than 30° (|I| &lt; 30°), the FAC values are set to NaN. The radial current density can be calculated for the entire orbit, except for latitudes above 87° (near the poles), where both FAC and IRC values are set to NaN. 
 
It is important to note that for this time series provided here, the magnetic field data used for the dual-satellite method is not low-pass filtered with a 3-dB cutoff period of 20 seconds (corresponding to a wavelength of 150 km) as described in the "swarm-level-2-fac-dual-product-description" document. Additionally, FAC and IRC values are set to NaN when the integration area becomes smaller than 3e8 m^2, and no daily CDF files are produced if the along-track time difference between two Swarm satellites (A and C) exceeds 11 seconds. 
 
The data is provided in NASA CDF format and can be accessed at ftp://isdcftp.gfz-potsdam.de/swarm/OPER/Level2/FAC_TMS/Sat_AC/small_scale. The output variable description is available at https://swarmhandbook.earth.esa.int/catalogue/SW_FAC_TMS_2F.
DOI: 10.25326/799
title: PARCS_CNRM_SQUARE-TEMPLE_IOT-10MIN_L2

description: This dataset contains air temperature, air humidity, air pressure, wind speed, black globe temperature and precipitation measured by conventional meteorological sensors and temperature/humidity in the soil measured by IoT sensors.  These measurements have been done at Square du Temple Elie Wiesel in Paris during PARCS campaign.
DOI: 10.5880/gfz.2.2.2023.001
title: Global DAS Month 2023, Teleseismic Event Recordings, Potsdam Fiber

description: The here referenced dataset provides event-based Distributed Acoustic Sensing (DAS) recordings made with an approximately 22 km long dark telecommunication fiber lying in urban Potsdam and surroundings. For each of 164 M&gt;=5 earthquakes occurring in February 2023 and listed by the USGS, one hour of data is provided starting with the event's origin time. Additionally, the whole day of February 14 is provided in hourly files.


The data was recorded in the frame of the global DAS month, an initiative to collaboratively record and share simultaneously recorded DAS data from all over the world (https://www.norsar.no/in-focus/global-das-monitoring-month-february-2023). DAS is an emerging technology increasingly used by seismologists to convert kilometer long optical fibers into seismic sensors.
DOI: 10.5880/fidgeo.2023.036
title: Experimental data on Long-term Isostatic Relaxation of Large Terrestrial Impact Structures: Structural Characteristics Inferred from Scaled Analogue Experiments at the UHH-Tec Modelling Lab of the Universität Hamburg

description: This data set includes the results of digital image correlation of 21 analogue experiments on isostatic relaxation of the crater floors performed at UHH-Tec Modelling Laboratory of the Universität Ham-burg. The structural evolution of model upper crust was systematically analysed for various initial depths and diameters of crater floors, gleaned from numerical models for average continental crust. The experiments show that crater floor uplift is accomplished by long-wavelength subsidence of the crater periphery and may operate on time scales of thousands of years in nature. Detailed descriptions of the experiments and monitoring techniques can be found in Eisermann and Riller (2023) to which this data set is supplementary. The data presented here consist of movies and images displaying cumulative displacements of deforming analogue model surfaces.
DOI: 10.5880/gfz.4.8.2023.005
title: Dissolved organic compounds in geothermal fluids used for energy production – part II

description: This dataset comprises 47 fluid samples from 11 geothermal sites (Germany, Austria, Iceland, Turkey, Netherlands, Belgium, French West Indies). The samples were collected within the REFLECT project (Redefining geothermal properties at extreme conditions to optimize future geothermal energy extraction). The focus with these analyses were on the organic compound composition of the fluids, since they are rarely included in the analyses of fluids taken from geothermal power plants. Understanding the organic compound composition of geothermal fluids might help to better understand chemical reactions within the fluids and might help to mitigate problems that arise with the operation of a geothermal power plant such as mineral precipitation (scaling) and corrosion of the casing and pipes.
description: The samples were taken by the onsite project partners and sent to GFZ for the analyses. Generally, the fluid samples were taken at the surface instalments and remained untreated after sampling (otherwise given as remark in the datasheet). Sampling bottles were rinsed and flushed with the fluids prior to filling them up. Sampling volumes ranged from 250-500 ml per sample.
DOI: 10.5880/fidgeo.2024.006
title: Lead(II) biosorption experiments of the fungus Penicillium citrinum under geothermal conditions

description: This dataset is the result of an experimental series that was carried out in September/October 2022 at GFZ German Research Centre for Geosciences, Potsdam, Germany to observe biosorption of lead under extreme conditions. Synthetic solutions, simulating the geothermal fluids from the Heemskerk geothermal power plant were were prepared in 30 ml glass vials (Rotalibo screw neck ND24 EPA). To prepare the stock solutions, sodium chloride (NaCl, 99.8 %, Cellpure, Merck, DE) was added at 265 g/L and Pb(II), in form of lead nitrate (Pb(NO3 )2 , Merck, DE), at 1 g/L to ultrapure water. To assess the impact of acetic acid on lead biosorption, two treatments were done: one without acetic acid and one where acetic acid (100 %, Merck, DE) was added at 60 mg/L. Finally, dead biomass of the fungus Penicillium citrinum was added in the samples at a concentration of 4 g/L (Wahab et al., 2017). The samples were incubated in an autoclave at a pressure of 8 bars on a rotative shaker. The temperature was set at 25 °C, 60 °C or 98 °C with three contact times (1, 2 and 3 h). All treatments were performed in triplicates. For each treatment, two controls without biomass were done. Control samples without the addition of NaCl were done in duplicate, at 25 °C and for 2 h. After incubation, samples were filtered through a 0.22 µm nitrocellulose filter (Sartorius Stedim Biotech, FR) to separate the biomass from the liquid. The biomass on the filters was dried for 24 h at 45 °C before being scraped from the filter and kept in a Falcon tube at room temperature.
DOI: 10.5880/gfz.4.1.2023.010
title: Ring-shear test data of garnet sand used for analogue modelling in the experimental tectonics laboratory at GFZ German Research Centre for Geosciences, Potsdam

description: This dataset provides friction data from ring-shear tests on garnet sand used in analogue modelling of tectonic processes as a rock analogue for “strong” or “high density” layers in the earth’s upper crust (e.g. Klinkmüller et al., 2016). According to our analysis the material shows a Mohr-Coulomb behaviour characterized by a linear failure envelope. Peak, dynamic and reactivation friction coefficients of garnet sand are µP = 0.83, µD = 0.61, and µR = 0.73, respectively (Table 5). Cohesion of the material ranges between 20-120 Pa. The material shows a no significant rate-dependency. The data presented here are derived by ring shear testing using a SCHULZE RST-01.pc (Schulze, 1994, 2003, 2008) at HelTec, the Laboratory for experimental tectonics at the Helmholtz Center Potsdam – GFZ German Research Centre for Geosciences in Potsdam, Germany. The RST is specially designed to measure friction coefficients µ and cohesions C in loose granular material accurately at low confining pressures (&lt;20 kPa) and shear velocities (&lt;1 mm/sec) similar to sandbox experiments. In this tester, a granular bulk material layer is sheared internally at constant normal stress σN and shear velocity v while shear force and lid displacement (corresponding to density and volume change ΔV) are measured continuously. For more details see Klinkmüller et al. (2016).