cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.5880/gfz.199502.1
title: Data from the GRANU95 seismic refraction experiment

description: The occurrence of exposed high-metamorphic rocks (granulites) in combination with various gravity anomalies aligned along the direction of Variscan strike characterize a special terrain (Saxothuringikum) which has been sandwiched between two major tectonic units during the Variscan orogeny. Near surface geological studies show evidence that the Saxothuringian zone represents extended crust. Therefore the model of a "metamorphic core complex" is often used to explain the exhumation of the "Saxonian granulites". The thickness of the crust, the geometry of the Moho, and the composition of middle and lower crust that underlie such" metamorphic core complexes" have remained largely unconstrained. Because these physical parameters are critical for understanding the extensional processes acting at depth, we have carried out a seismic refraction experiment in order to resolve the deeper structure of an exposed "granulite-complex". From May 6th to May 13th 1995 a seismic refraction - wide angle reflection experiment was carried out as part of the DFG-priority program: "Orogenic processes – their quantification and simulation at the example of the Variscides". Two lines, A and B, were completed in two deployments (see map in GRANU95_report.pdf). In total 12 shots were fired and over 4500 seismograms were collected using 130 instruments. Only two different types of instruments (Reftek and PDAS) have been used for recording the explosions. All instruments were equipped with a 3-component 1Hz seismometer. The 90 km long NW-SE line (deployment A, 74 instruments) from Leipzig to the Erzgebirge through the Saxonian Granulites was carried out on the 8th and 9th May 1995. Additionally 56 stations were placed symmetrically to shotpoint D along line B (perpendicular to line A). Shots were fired on locations A1, A3, A4, A2 (see map in GRANU95_report.pdf). The station spacing for this deployment was around 1.3 km. The 260 km long SW-NE line (deployment B, 93 instruments) from Dresden to Bamberg, also crossing the Saxonian Granulites was completed from 11th to 13th May 1995. Every second instrument from deployment A was moved to complete line B. Shots were fired on locations B, C, D, E, F, G, H and I (see map in GRANU95_report.pdf) and recorded along line B and line A (perpendicular to line B) at a receiver spacing of about 2.6 km.
DOI: 10.5880/gfz.1.1.2023.001
title: Heligoland GNSS hourly time series positioning for 2017-2021

description: This dataset includes 1-hour GNSS coordinate product processed by GFZ. The observations are from the two GNSS station installed by BKG on the small offshore island of Heligoland in the North Sea. These products are hourly position time series (North, East and Vertical). The 30-second daily RINEX files since 2020 are downloaded from BKG. Together with 5 IGS stations in Europe, the collected RINEX data are processed with the Earth Parameter and Orbit System (EPOS) software from GFZ. The EPOS software uses un-difference carrier phase and pseudo-range observables from GPS and GLONASS L1 and L2 frequencies. They formed an ionosphere-free linear combination to remove the first-order ionosphere effect in the observation. The phase center variation (PCV/PCO) of the satellite and ground station antenna are corrected by IGb14. The station deformation caused by ocean tide loading is modeled by the FES2004 model. Apriori zenith hydro-static/non-hydro-static delay is obtained using the Global Pressure and Temperature model (GPT2) and Vienna mapping functions (VMF) in a 6-hour grid file database. To ensure consistency in the GNSS data analysis, we took the GNSS precise satellite orbits as well as clock products from the 2nd reprocessed (before 2014) and routine (since 2015) yield by EPOS software. The same station parameters are set up as used for the GNSS orbit and clock estimation. All the GNSS data were processed in units of 24 hours periods. The estimated parameters are (i) the receiver clock error for every epoch as white noise, (ii) the hourly station coordinates, (iii) daily tropospheric gradients, (iv) the daily inter-system clock bias for GLONASS, and (v) 2-hour tropospheric wet zenith delays with random-walk constrain.
DOI: 10.5880/isg.2019.021
title: The CGS geoid based on FFT with degree-banded modification of the Stokes kernel for the Colorado Experiment: ColFFTDB-CGS2019

description: The ColFFTDB-CGS2019 gravimetric geoid model has been computed by the Canadian Geodetic Survey (CGS), Natural Resources Canada. It has been worked out in the frame of the International Association of Geodesy Joint Working Group 2.2.2 "The 1 cm geoid experiment" and the so called "Colorado experiment". The area covered by the model is 110°W ≤ longitude ≤ 102°W, 35°N ≤ latitude ≤ 40°N with a grid spacing of 1' in both latitude and in longitude. The solution is based on the Stokes-Helmert method, which is used with the degree-banded Stokes kernel modification (Huang and Véronneau, 2013). A band-wise spectral scheme is developed to combine the global model, airborne and surface gravity data, contributing to low-, medium- and high-degree bands of the geoid, respectively. In particular, the global gravity model provides entirely the low-degree band up to degree 150 from where it goes into transition with the surface gravity data up to degree 210. The surface gravity data complete the geoid frequencies up to degree 10800 with complement information from SRTM 3″ digital terrain model. As for the GRAV-D airborne gravity data, they provide corrective values directly to the geoid model, contributing between degrees 210 and 790 with smooth transition at each end. The geoid computation is performed by Fast Fourier Transform (FFT) numerical integration. The accuracy of the geoid model, when compared against GSVS17 GPS/leveling, is equal to 2.0 cm. 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/gfz.3.6.2021.001
title: Results of extensive Monte-Carlo simulations for the Lennard-Jones fluid: Data for particle configurations, pair-, and triplet-correlation functions in the range of 0.002 ≤ rho* ≤ 1.41 and 0.45 ≤ T* ≤ 25

description: This data publication reports results of Monte-Carlo simulations, configurations, pair-, and triplet-correlation functions for a Lennard-Jones fluid. The Lennard-Jones potential (Jones 1924) u^LJ is one of the prototypes of an intermolecular interaction. Gottschalk (2019) performed 32705 NVT Monte-Carlo simulations using 1372 LJ particles (N) for a large number of densities rho a and temperatures T. The simulations range from 0.002 ≤ rho* ≤ 1.41 and 0.45 ≤ T* ≤ 25 using a cut-off of 5.0 for rho* ≤ 1.37 and 4.5 for rho* &gt; 1.37, respectively. At each state point, 1372 LJ particles (N = 1372) were equilibrated using 5 x 10^4 cycles and subsequently sampled for 0.75 x 10^6 cycles. One cycle did consist of 1372 trial moves, one for each particle. Every 1000 cycles the thermodynamic properties U* and p* are recorded as well as the current configuration of particles including the pair- and triplet-correlation functions. A total of 27615 of these simulations were in the stable and metastable single fluid phase field which is a necessary requirement. Field boundaries, U*, p* and further details of the Monte-Carlo simulations are given in Gottschalk (2019). Bin widths of 0.005 for pair- and 0.04 in all directions for triplet-correlation functions were used. Further details for the calculations of the pair- and triplet-correlation functions are presented in Gottschalk (2021). All configurations of particles, pair- and triplet-correlation functions of those 27615 simulations are reported here. However, the total amount of data for configurations, pair-, and triplet-configurations is 600, 0.3, and 1170 GB, respectively. The data are provided as zipped files and described in the data description and the associated Read-me.txt. All rho* and T* state points are listed in the file Conditions.txt in the top level of the files.
DOI: 10.5880/fidgeo.2018.007
title: Supplementary paleomagnetic data to: “Paleomagnetism in the Pannonian; Problems, Pitfalls, and Progress in using iron sulphides for magnetostratigraphy”

description: This dataset contains the paleomagnetic supplementary material to the article Kelder et al. (subm.), which presents a magnetostratigraphic correlation of Late Miocene lacustrine sediments based on multi-polarity greigite. The multi-polarity is visible in most thermal paleomagnetic results (Zijderveld diagrams) by antipodal high and medium temperature components, while only one magnetic component was visible in the alternating field demagnetization diagrams. Based on this complex behavior, a tailored demagnetization approach was developed to allow for reliable magnetostratigraphic dating of lacustrine sediments. The dataset includes demagnetization data from four drill cores located nearby Paks, Hungary. They were not oriented, meaning that only the inclination could be used for paleomagnetism. The measurements took place at the Paleomagnetic Laboratory Fort Hoofddijk in Utrecht University, The Netherlands. For details about the methodology the reader is referred to the methodology in Kelder et al. (subm). Three types of data are distinguished:• Thermal demagnetization results (.th files)• Alternating field demagnetization results (.af files).• Interpreted magnetic vectors for demagnetization files (.dir files) The .th, .af. and .dir files can be viewed with Notepad or similar programs, and analyzed via the Open Source platform Paleomagnetism.org (Koymans et al., 2016). The .dir files only exist for the cores PAET-30 and PAET-34, because these were interpreted in detail, while the material of the other cores (PAET-26, 27) were mainly used for rock magnetic purposes. Finally, an overview of the data files, abbreviations and sample codes is provided in the data description file.
DOI: 10.5880/gfz.3.1.2023.005
title: Three Icelandic basalts for resampling of BIR basalt for production of ISO-certification of whole rock powder

description: The USGS has suspended the distribution of the widely used whole rock reference materials BHVO, BCR and BIR. The goal of this work is to identify a material as similar as possible to the original BIR Islandic basalt. This material can then undergo an ISO-compliant certification of the whole rock powder major and trace element contents. The sampling quarry east of Reykjavik has multiple basalt flows and it is not known which one was originally sampled in 1980 for production of above mentioned reference materials. In this study, three samples were tested to see which is most similar to what was published by Flanigan (1984). Here, the results of this exploratory sample collection are presented, but note that these data are not part of the certification process or represent certified results.
description: Three basalt samples each of around 500 grams were collected at an abandoned quarry circa 12 km east of Reykjavik, Iceland. The samples were ground to &lt;63 µm using an agate mortar. Major and minor element concentrations were determined on glass beads by xrf. Some minor and trace elements were determined on whole rock digests using the standard 4 acid digestion.
DOI: 10.5880/gfz.2.5.2023.002
title: Time-lapse imagery, digital image correlation (DIC) and topographic analysis of laboratory experiments simulating the evolution of the East African Rift System

description: This data set includes overviews and videos depicting the surface evolution (time-lapse photographs, topography data and digital image correlation [DIC] analysis) of 6 analogue models simulating rotational rift tectonics. In these experiments we examined the links between rotational rifting and different distributions of lithospheric weaknesses, and the evolution of the East African Rift System. All experiments were performed at the Tectonic Modelling Laboratory of the University of Bern (UB). Detailed descriptions of the model set-up and results, as well as the monitoring techniques can be found in Zwaan et al. (2023).
DOI: 10.5880/gfz.3.1.2022.004
title: Laser ablation inductively coupled mass spectrometry of pyrite from the Paleoproterozoic George Fisher deposit and Urquhart Shale Formation (Mount Isa, Australia)

description: Trace element (TE) analysis of pyrite via LA-ICP-MS can produce large, paragenetically-constrained datasets, which can be used to reconstruct the conditions of pyrite formation in complex mineral systems. The Carpentaria province in northern Australia is host to some of the world’s highest value Zn-Pb (+Ag, Cu) deposits. The genesis of many of these deposits in the southern part of the province is controversial due to tectonic overprinting, with competing models of single- vs. multi-stage ore formation. In this study, LA-ICP-MS analysis of pyrite from the George Fisher Zn-Pb-Ag deposit and correlative unmineralized host rocks has been combined with paragenetic and whole rock lithogeochemical data. Paragenetically constrained pyrite TE data were then evaluated in the context of single- vs. multi-stage ore formation models and compared with recent data from undeformed clastic-dominated (CD-type) deposits of the northern Carpentaria province. Pre-ore diagenetic pyrite is compositionally similar to other Proterozoic diagenetic pyrite, with some evidence of minor hydrothermal anomalism that could help define distal alteration, but requires further analysis. Pyrite from the different ore stages is compositionally distinct, consistent with a multi-stage system. Ore stage 1 pyrite has high concentrations of Cu, Zn, As, Ag, Sb, Tl, and Pb as well as high Co/Ni ratios, whereas ore stage 2 pyrite contains Ni and Co, and ore stage 3 pyrite is dominated by Co with lesser concentrations of Ni and Cu. Ore stage 1 pyrite has a similar composition to hydrothermal pyrite in the undeformed northern Carpentaria CD-type deposits and likely formed syn-diagenesis. Ore stage 2 was syn-deformation, and resulted in replacement and recrystallization of pre-existing pyrite that also resulted in the expulsion of incompatible TEs. Ore stage 3 formed via a later Cu mineralizing event that resulted in a new geochemically distinct generation of Co-rich pyrite. This study demonstrates the value of pargenetically-constrained pyrite TE data for refining genetic models in complex sediment hosted mineral systems. This data publication includes pyrite trace element compositions (in ppm) of 28 samples from the un-mineralized Urquhart Shale Formation and from the George Fisher deposit. Access to drill cores was granted by Mount Isa Mines (MIM) George Fisher operation and Mount Isa Mines Resource Development.
DOI: 10.5880/fidgeo.2023.027
title: Cosmogenic 10^Be and 26^Al concentrations in fluvial sediments from the Mohand Range in the northwestern Himalaya

description: Because of the multi-stepped pathways of sediment comprising the foreland fold-thrust belt (FFTB), detrital quartz grains that recycle from the FFTB sources contain cosmogenic radionuclides (CRN), such as 10^Be and 26^Al, accumulated during previous exposure, resulting in inheritance and, hence, anomalously low erosion rates. This inhibits the straightforward use of 10^Be as tracers for modern erosion rates and sediment discharge from the FFTB, prevalent at the external edges of collisional orogens such as the Himalaya. We present a novel approach for quantifying the erosion rates of FFTB by comparing measured and modeled CRN concentrations in fluvial sediments. We apply this approach to the Mohand Range, an emergent fault-related fold in the frontal part of the northwestern Himalaya (see the location map below). The 10^Be and 26^Al datasets presented here were used to calibrate our model, which we used to quantify the erosion rates in and sediment flux from the Mohand Range. Datasets provided here include a summary of the location and depositional age of 33 fluvial sediments and two sandstone samples collected from the Mohand Range, 10^Be analysis results of 23 of these fluvial sediments and two bedrock samples, and 26^Al-10^Be pair analysis results of the remaining ten fluvial sediment samples (Dataset S1). Moreover, the data include the depositional age map of uplifted older foreland sediments across the western Mohand Range (Dataset 2) and the map of best-fit 10^Be concentration inherited from Himalayan paleoerosion (Dataset 3) and sediment burial in the foreland (Dataset 4). We also include a map of the best-fit 10^Be concentration produced during modern erosion of the Mohand Range (Dataset 5) and a map of the best-fit uplift/erosion rates across the western Mohand Range (Dataset 6). For more information (e.g., sampling method, analytical procedure, and data processing), please refer to the main article (Mandal et al., 2023).
description: File description: Dataset S1 (Dataset_S1.pdf): 10^Be and 26^Al sample location and analysis results of fluvial sediment and bedrock samples from the Mohand Range in the northwestern Himalaya. Dataset S2 (Depositional_age.tif): Map of depositional ages (Ma) of uplifted older foreland deposits in the western Mohand Range. Dataset S3 (Paleo10Be.tif): Map of best-fit 10^Be concentration (at gqtz-1) inherited from Himalayan paleoerosion. Dataset S4 (Burial10Be.tif): Map of best-fit 10^Be (at g_qtz^-1) concentration inherited from sediment burial in the foreland. Dataset S5 (Recent10Be.tif): Map of best-fit 10^Be concentration (at g_qtz^-1) acquired during modern erosion of the Mohand Range. Dataset S6 (Erosion_rate.tif): Map of best-fit uplift/erosion rates (mm yr-1) across the western Mohand Range.
DOI: 10.5880/pik.2018.005
title: ISIMIP2a Simulation Data from Fisheries & Marine Ecosystems (Fish-MIP; global) Sector

description: The Inter-Sectoral Impact Model Intercomparison Project (ISIMIP) provides a framework for the collation of a set of consistent, multi-sector, multi-scale climate-impact simulations, based on scientifically and politically-relevant historical and future scenarios. This framework serves as a basis for robust projections of climate impacts, as well as facilitating model evaluation and improvement, allowing for improved estimates of the biophysical and socio-economic impacts of climate change at different levels of global warming. It also provides a unique opportunity to consider interactions between climate change impacts across sectors.
      ISIMIP2a is the second ISIMIP simulation round, focusing on historical simulations (1971-2010) of climate impacts on agriculture, fisheries, permafrost, biomes, regional and global water and forests. This will serve as a basis for model evaluation and improvement, allowing for improved estimates of the biophysical and socio-economic impacts of climate change at different levels of global warming.
      The focus topic for ISIMIP2a is model evaluation and validation, in particular with respect to the representation of impacts of extreme weather events and climate variability. During this phase, four common global observational climate data sets were provided across all impact models and sectors. In addition, appropriate observational data sets of impacts for each sector were collected, against which the models can be benchmarked. Access to the input data for the impact models is provided through a central ISIMIP archive (see https://www.isimip.org/gettingstarted/#input-data-bias-correction).
      This entry refers to the ISIMIP2a simulation data from six global fisheries & marine ecosystems (global) models: APECOSM, BOATS, DBEM, DBPM, EcoOcean, Macroecological (Jennings) model.
description: The ISIMIP2a Fisheries & Marine Ecosystems (Fish-MIP; global) outputs are based on simulations from 6 global fisheries & marine ecosystems models (see listing) according to the ISIMIP2a protocol (https://www.isimip.org/protocol/#isimip2a). The models simulate total ecosystem biomass, total consumer biomass, biomass by different size classes, and fisheries catches based on prescribed input fields. A more detailed description of the models and model-specific amendments of the protocol are available here: https://www.isimip.org/impactmodels/.
DOI: 10.5880/gfz.4.6.2021.001
title: Major element stream water chemistry, compiled 10Be erosion rates, and analyses of weathering across an erosion-rate gradient in in southern Taiwan

description: This dataset was used to analyse the link between chemical weathering and erosion rates across the southern tip of Taiwan. The weathering of silicate minerals is a key component of Earth’s long-term carbon cycle, and it stabilises Earth’s climate by sequestering carbon dioxide (CO2) from the atmosphere – thereby balancing CO2-emissions from the mantle. Conversely, the weathering of accessory carbonate and sulphides acts as a CO2 source. Chemical weathering is fundamentally dependent on the exposure of fresh minerals by erosion. With these data we investigated the link between the exposure of rocks by erosion and the chemical weathering of silicates, carbonates, and sulphides across a landscape with a significant erosion-rate gradient and comparatively little variation in runoff and lithology. This dataset includes new major element chemistry and water isotopes of river waters collected from across the southern tip of Taiwan as well as associated topographic and lithologic data (tab 1 in the excel table). Moreover, the data include a compilation of published 10Be-derived erosion rates from a subset of the sampled rivers (tab 2 in the excel file) and available major element chemistry from hotsprings in the region (tab 3 in the excel file). Using a mixing model, we derived the cation contributions from silicate and carbonate weathering as well as from hotspring and cyclic sources. Further, we estimated the erosion rates for each sample from the compiled 10Be data and the steepness of river channels, and we estimated saturation and pH in the weathering zone. For more information please refer to the associated data description file and especially to Bufe et al. (2021).