Articles | Volume 13, issue 5
https://doi.org/10.5194/essd-13-1987-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/essd-13-1987-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Data description paper
| 
11 May 2021
Data description paper |
| 11 May 2021
| 11 May 2021
Historical K index data collection of Soviet magnetic observatories, 1957–1992
Natalia Sergeyeva
Geophysical Center of the Russian Academy of Sciences, Moscow, 119296,
Russia
Alexei Gvishiani
Geophysical Center of the Russian Academy of Sciences, Moscow, 119296,
Russia
Schmidt Institute of Physics of the Earth of the Russian Academy of
Sciences, Moscow, 123242, Russia
Anatoly Soloviev
Geophysical Center of the Russian Academy of Sciences, Moscow, 119296,
Russia
Schmidt Institute of Physics of the Earth of the Russian Academy of
Sciences, Moscow, 123242, Russia
Lyudmila Zabarinskaya
Geophysical Center of the Russian Academy of Sciences, Moscow, 119296,
Russia
Tamara Krylova
Geophysical Center of the Russian Academy of Sciences, Moscow, 119296,
Russia
Mikhail Nisilevich
Geophysical Center of the Russian Academy of Sciences, Moscow, 119296,
Russia
Geophysical Center of the Russian Academy of Sciences, Moscow, 119296,
Russia
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Roman V. Sidorov, Mikhail K. Kaban, Anatoly A. Soloviev, Alexei G. Petrunin, Alexei D. Gvishiani, Alexei A. Oshchenko, Anton B. Popov, and Roman I. Krasnoperov
Solid Earth, 12, 2773–2788, https://doi.org/10.5194/se-12-2773-2021, https://doi.org/10.5194/se-12-2773-2021, 2021
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In the present study, the structure of sedimentary basins in the eastern Asia Arctic zone is analysed by employing the approach based on decompensative gravity anomalies. Two obtained models of thickness and density of sediments in the study area display significant changes in the thickness and distribution of sedimentary rocks revealed for some particular basins. The new results improve our knowledge about the region, providing a better understanding of the evolution of the sedimentary basins.
Yulia S. Lyubovtseva, Alexei D. Gvishiani, Anatoly A. Soloviev, Olga O. Samokhina, and Roman I. Krasnoperov
Hist. Geo Space. Sci., 11, 157–171, https://doi.org/10.5194/hgss-11-157-2020, https://doi.org/10.5194/hgss-11-157-2020, 2020
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The International Geophysical Year (IGY) of 1957–1958 was one of the most significant scientific events of the 20th century that marked the beginning of the Space Age. IGY united efforts of scientists from 67 countries for comprehensive study of our planet. The scientific program included multidisciplinary activity on all the continents, in the oceans, in the air, and in space. This article gives a brief overview of the history of the IGY organization and its main achievements.
Roman Krasnoperov, Dmitry Peregoudov, Renata Lukianova, Anatoly Soloviev, and Boris Dzeboev
Earth Syst. Sci. Data, 12, 555–561, https://doi.org/10.5194/essd-12-555-2020, https://doi.org/10.5194/essd-12-555-2020, 2020
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The paper presents a collection of magnetic field measurements performed by early Soviet magnetic satellite missions Kosmos-49 (1964) and Kosmos-321 (1970). These data were used as initial data for analysis of the structure of the Earth’s magnetic field sources and for compilation of a series of its analytical models. The most notable model that employed Kosmos-49 data was the first generation of the International Geomagnetic Reference Field for epoch 1965.0.
Victor G. Getmanov, Alexei D. Gvishiani, and Roman V. Sidorov
Geosci. Instrum. Method. Data Syst., 8, 209–215, https://doi.org/10.5194/gi-8-209-2019, https://doi.org/10.5194/gi-8-209-2019, 2019
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The material in this research paper is intended for specialists engaged in digital processing of geomagnetic field measurements. A technique is discussed that can help to reduce the errors in measurements and can be applied in various tasks of digital processing of geomagnetic data from vector magnetometers and other three-component data. The results of the tests on model and real geomagnetic data are provided for the algorithm along with the conclusions about its possibilities.
Dmitry Kudin, Evgeniy Uchaikin, Alexey Gvozdarev, Nikolay Kudryavtsev, and Roman Krasnoperov
Geosci. Instrum. Method. Data Syst. Discuss., https://doi.org/10.5194/gi-2019-18, https://doi.org/10.5194/gi-2019-18, 2019
Preprint withdrawn
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This paper gives an outlook of the research aimed at development of an instrument for magnetic field survey. The developed instrument performs accurate measurements of the parameters of the Earth’s magnetic field. Such measurements are required for control of magnetic environment at observational points where the Earth’s magnetic field is continuously measured. The developed instrument is considered as a possible standard solution for assessment of artificial noise at various locations.
Roman Sidorov, Anatoly Soloviev, Alexei Gvishiani, Viktor Getmanov, Mioara Mandea, Anatoly Petrukhin, and Igor Yashin
Ann. Geophys. Discuss., https://doi.org/10.5194/angeo-2018-111, https://doi.org/10.5194/angeo-2018-111, 2018
Manuscript not accepted for further review
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Decidated to the combined analysis of space weather data (geomagnetic activity, cosmic ray secondaries and ionospheric data) obtained during the September 2017 solar flares and geomagnetic storms, this study is an attempt to construct a technique for circumterrestrial physical data analysis in order to analyze various space weather effects and obtain new mutually supportive information during major space weather events on different phases of geomagnetic storm evolution.
Andrey Khokhlov, Roman Krasnoperov, Bogdan Nikolov, Julia Nikolova, Mikhail Dobrovolsky, Dmitry Kudin, Valery Petrov, and Ivan Belov
Ann. Geophys. Discuss., https://doi.org/10.5194/angeo-2018-46, https://doi.org/10.5194/angeo-2018-46, 2018
Preprint withdrawn
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Magnetic field of the Earth is continuously measured by a network of observatories. It implies application of mathematical and computational technologies for geomagnetic data processing. Actual conditions in which observations are performed should be also considered. Effective identification of noise and elimination of its influence on final data is an important part of the data processing. An original approach for magnetic data processing and some partial results are discussed in this paper.
Roman Sidorov, Anatoly Soloviev, Roman Krasnoperov, Dmitry Kudin, Andrei Grudnev, Yury Kopytenko, Andrei Kotikov, and Pavel Sergushin
Geosci. Instrum. Method. Data Syst., 6, 473–485, https://doi.org/10.5194/gi-6-473-2017, https://doi.org/10.5194/gi-6-473-2017, 2017
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Saint Petersburg Observatory was founded as a geomagnetic branch of the Voyeikovo magnetic and meteorological observatory in the late 1960s. In 2012 the station was upgraded to INTERMAGNET standard and in 2016 it was officially certified as SPG INTERMAGNET magnetic observatory. The SPG data can be downloaded via http://intermagnet.org or
http://geomag.gcras.ru . This paper describes the way the SPG observatory made to become an international geomagnetic network member.
Vincent Lesur, Benoît Heumez, Abdelkader Telali, Xavier Lalanne, and Anatoly Soloviev
Ann. Geophys., 35, 939–952, https://doi.org/10.5194/angeo-35-939-2017, https://doi.org/10.5194/angeo-35-939-2017, 2017
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Chambon-la-Forêt magnetic observatory distributes definitive second data that are contaminated by noise with a standard variation below 400 pT. This noise is low compared to the international standard set by INTERMAGNET. It is mainly due to local signals of unknown origins that have short wavelengths in space (less than 200 m) and in time (less than a day).
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To apply a deep learning (DL) algorithm to electromagnetic (EM) methods, subsurface resistivity models and/or the corresponding EM responses are often required. To date, there are no standardized EM datasets, which hinders the progress and evolution of DL methods due to data inconsistency. Therefore, we present a large-scale physics-driven model database of geologically plausible and EM-resolvable subsurface models to incorporate consistency and reliability into DL applications for EM methods.
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Mark Jessell, Jiateng Guo, Yunqiang Li, Mark Lindsay, Richard Scalzo, Jérémie Giraud, Guillaume Pirot, Ed Cripps, and Vitaliy Ogarko
Earth Syst. Sci. Data, 14, 381–392, https://doi.org/10.5194/essd-14-381-2022, https://doi.org/10.5194/essd-14-381-2022, 2022
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To robustly train and test automated methods in the geosciences, we need to have access to large numbers of examples where we know
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Alberto Michelini, Spina Cianetti, Sonja Gaviano, Carlo Giunchi, Dario Jozinović, and Valentino Lauciani
Earth Syst. Sci. Data, 13, 5509–5544, https://doi.org/10.5194/essd-13-5509-2021, https://doi.org/10.5194/essd-13-5509-2021, 2021
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We present a dataset consisting of seismic waveforms and associated metadata to be used primarily for seismologically oriented machine-learning (ML) studies. The dataset includes about 1.3 M three-component seismograms of fixed 120 s length, sampled at 100 Hz and recorded by more than 600 stations in Italy. The dataset is subdivided into seismograms deriving from earthquakes (~ 1.2 M) and from seismic noise (~ 130 000). The ~ 54 000 earthquakes range in magnitude from 0 to 6.5 from 2005 to 2020.
Ulysse Lebrec, Victorien Paumard, Michael J. O'Leary, and Simon C. Lang
Earth Syst. Sci. Data, 13, 5191–5212, https://doi.org/10.5194/essd-13-5191-2021, https://doi.org/10.5194/essd-13-5191-2021, 2021
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This paper presents an integrated workflow that builds on satellite images and 3D seismic surveys, integrated with historical depth soundings, to generate regional high-resolution digital elevation models (DEMs). The workflow was applied to the North West Shelf of Australia and led to the creation of new DEMs, with a resolution of 10 × 10 m in nearshore areas and 30 × 30 m elsewhere over an area of nearly 1 000 000 km2. This constitutes a major improvement of the pre-existing 250 × 250 m DEM.
Xiangjin Meng, Kebiao Mao, Fei Meng, Jiancheng Shi, Jiangyuan Zeng, Xinyi Shen, Yaokui Cui, Lingmei Jiang, and Zhonghua Guo
Earth Syst. Sci. Data, 13, 3239–3261, https://doi.org/10.5194/essd-13-3239-2021, https://doi.org/10.5194/essd-13-3239-2021, 2021
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In order to improve the accuracy of China's regional agricultural drought monitoring and climate change research, we produced a long-term series of soil moisture products by constructing a time and depth correction model for three soil moisture products with the help of ground observation data. The spatial resolution is improved by building a spatial weight decomposition model, and validation indicates that the new product can meet application needs.
Alexis Neven, Pradip Kumar Maurya, Anders Vest Christiansen, and Philippe Renard
Earth Syst. Sci. Data, 13, 2743–2752, https://doi.org/10.5194/essd-13-2743-2021, https://doi.org/10.5194/essd-13-2743-2021, 2021
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The shallow underground is constituted of sediments that present high spatial variability. This upper layer is the most extensively used for resource exploitation (groundwater, geothermal heat, construction materials, etc.). Understanding and modeling the spatial variability of these deposits is crucial. We present a high-resolution electrical resistivity dataset that covers the upper Aare Valley in Switzerland. These data can help develop methods to characterize these geological formations.
Angela Saraò, Monica Sugan, Gianni Bressan, Gianfranco Renner, and Andrea Restivo
Earth Syst. Sci. Data, 13, 2245–2258, https://doi.org/10.5194/essd-13-2245-2021, https://doi.org/10.5194/essd-13-2245-2021, 2021
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Focal mechanisms describe the orientation of the fault on which an earthquake occurs and the slip direction. They are necessary to understand seismotectonic processes and for seismic hazard analysis. We present a focal mechanism catalogue of 772 selected earthquakes of
1.8 ≤ M ≤ 6.5 that occurred in the southeastern Alps and surrounding areas from 1928 to 2019. For each earthquake, we report focal mechanisms from the literature and newly computed solutions, and we suggest a preferred one.
Pavol Zahorec, Juraj Papčo, Roman Pašteka, Miroslav Bielik, Sylvain Bonvalot, Carla Braitenberg, Jörg Ebbing, Gerald Gabriel, Andrej Gosar, Adam Grand, Hans-Jürgen Götze, György Hetényi, Nils Holzrichter, Edi Kissling, Urs Marti, Bruno Meurers, Jan Mrlina, Ema Nogová, Alberto Pastorutti, Corinne Salaun, Matteo Scarponi, Josef Sebera, Lucia Seoane, Peter Skiba, Eszter Szűcs, and Matej Varga
Earth Syst. Sci. Data, 13, 2165–2209, https://doi.org/10.5194/essd-13-2165-2021, https://doi.org/10.5194/essd-13-2165-2021, 2021
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The gravity field of the Earth expresses the overall effect of the distribution of different rocks at depth with their distinguishing densities. Our work is the first to present the high-resolution gravity map of the entire Alpine orogen, for which high-quality land and sea data were reprocessed with the exact same calculation procedures. The results reflect the local and regional structure of the Alpine lithosphere in great detail. The database is hereby openly shared to serve further research.
Domenico Di Giacomo, James Harris, and Dmitry A. Storchak
Earth Syst. Sci. Data, 13, 1957–1985, https://doi.org/10.5194/essd-13-1957-2021, https://doi.org/10.5194/essd-13-1957-2021, 2021
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We provide a comprehensive overview of the content in terms of moment magnitude (Mw) in the Bulletin of the International Seismological Centre (ISC). Mw is the preferred magnitude to characterize earthquakes in various research topics (e.g. Earth seismicity rates) and other applications (e.g. seismic hazard). We describe first the contribution of global agencies and agencies operating at a regional scale and then discuss features of Mw via different sets of comparisons.
Irene DeFelipe, Juan Alcalde, Monika Ivandic, David Martí, Mario Ruiz, Ignacio Marzán, Jordi Diaz, Puy Ayarza, Imma Palomeras, Jose-Luis Fernandez-Turiel, Cecilia Molina, Isabel Bernal, Larry Brown, Roland Roberts, and Ramon Carbonell
Earth Syst. Sci. Data, 13, 1053–1071, https://doi.org/10.5194/essd-13-1053-2021, https://doi.org/10.5194/essd-13-1053-2021, 2021
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Seismic data provide critical information about the structure of the lithosphere, and their preservation is essential for innovative research reusing data. The Seismic DAta REpository (SeisDARE) comprises legacy and recently acquired seismic data in the Iberian Peninsula and Morocco. This database has been built by a network of different institutions that promote multidisciplinary research. We aim to make seismic data easily available to the research, industry, and educational communities.
Anna L. Morozova, Paulo Ribeiro, and M. Alexandra Pais
Earth Syst. Sci. Data, 13, 809–825, https://doi.org/10.5194/essd-13-809-2021, https://doi.org/10.5194/essd-13-809-2021, 2021
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The Coimbra Magnetic Observatory (COI), Portugal, established in 1866, has provided nearly continuous records of the geomagnetic field for more than 150 years. However, during its long lifetime inevitable changes to the instruments and measurement procedures and even the relocation of the observatory have taken place. Such changes affect the quality of the measurements, introducing false (artificial) variations. We analyzed COI historical data to find and correct such artificial variations.
Abdelrazek Elnashar, Linjiang Wang, Bingfang Wu, Weiwei Zhu, and Hongwei Zeng
Earth Syst. Sci. Data, 13, 447–480, https://doi.org/10.5194/essd-13-447-2021, https://doi.org/10.5194/essd-13-447-2021, 2021
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Based on a site-pixel validation and comparison of different global evapotranspiration (ET) products, this paper aims to produce a synthesized ET which has a minimum level of uncertainty over as many conditions as possible from 1982 to 2019. Through a high-quality flux eddy covariance (EC) covering the globe, PML, SSEBop, MOD16A2105, and NTSG ET products were chosen to create the new dataset. It agreed well with flux EC ET and can be used without other datasets or further assessments.
Jana Lasser, Joanna M. Nield, and Lucas Goehring
Earth Syst. Sci. Data, 12, 2881–2898, https://doi.org/10.5194/essd-12-2881-2020, https://doi.org/10.5194/essd-12-2881-2020, 2020
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The publication presents six data sets that describe the surface and subsurface characteristics of salt deserts in southern California. The data were collected during two field studies in 2016 and 2018 and are used to investigate the origins of the eye-catching hexagonal salt ridge patterns that emerge in such deserts. It is important to understand how these salt crusts grow since these deserts and their dynamic surface structure play a major role in the emission of dust into the atmosphere.
Roman Krasnoperov, Dmitry Peregoudov, Renata Lukianova, Anatoly Soloviev, and Boris Dzeboev
Earth Syst. Sci. Data, 12, 555–561, https://doi.org/10.5194/essd-12-555-2020, https://doi.org/10.5194/essd-12-555-2020, 2020
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The paper presents a collection of magnetic field measurements performed by early Soviet magnetic satellite missions Kosmos-49 (1964) and Kosmos-321 (1970). These data were used as initial data for analysis of the structure of the Earth’s magnetic field sources and for compilation of a series of its analytical models. The most notable model that employed Kosmos-49 data was the first generation of the International Geomagnetic Reference Field for epoch 1965.0.
Tony Alfredo Stabile, Vincenzo Serlenga, Claudio Satriano, Marco Romanelli, Erwan Gueguen, Maria Rosaria Gallipoli, Ermann Ripepi, Jean-Marie Saurel, Serena Panebianco, Jessica Bellanova, and Enrico Priolo
Earth Syst. Sci. Data, 12, 519–538, https://doi.org/10.5194/essd-12-519-2020, https://doi.org/10.5194/essd-12-519-2020, 2020
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This paper presents data collected by a seismic network developed in the framework of the INSIEME project aimed to study induced seismicity processes. The network is composed of eight stations deployed around two clusters of induced microearthquakes in the High Agri Valley (southern Italy). The solutions for reducing the background noise level are presented and the quality of acquired data is discussed. Such open-access data can be used by the scientific community for different applications.
Konstantinos Lentas, Domenico Di Giacomo, James Harris, and Dmitry A. Storchak
Earth Syst. Sci. Data, 11, 565–578, https://doi.org/10.5194/essd-11-565-2019, https://doi.org/10.5194/essd-11-565-2019, 2019
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In this article we try to make the broad geoscience community and especially the seismological community aware of the availability of earthquake source mechanisms in the Bulletin of the International Seismological Centre (ISC) and encourage researchers to make use of this data set in future research. Moreover, we acknowledge the data providers, and we encourage others to routinely submit their source mechanism solutions to the ISC.
Xuanmei Fan, Gianvito Scaringi, Guillem Domènech, Fan Yang, Xiaojun Guo, Lanxin Dai, Chaoyang He, Qiang Xu, and Runqiu Huang
Earth Syst. Sci. Data, 11, 35–55, https://doi.org/10.5194/essd-11-35-2019, https://doi.org/10.5194/essd-11-35-2019, 2019
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Large earthquakes cause major disturbances to mountain landscapes. They trigger many landslides that can form deposits of debris on steep slopes and channels. Rainfall can remobilise these deposits and generate large and destructive flow-like landslides and floods. We release two datasets that track a decade of landsliding following the 2008 7.9 magnitude Wenchuan earthquake in China. These data are useful for quantifying the role of major earthquakes in shaping mountain landscapes.
Domenico Di Giacomo, E. Robert Engdahl, and Dmitry A. Storchak
Earth Syst. Sci. Data, 10, 1877–1899, https://doi.org/10.5194/essd-10-1877-2018, https://doi.org/10.5194/essd-10-1877-2018, 2018
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We outline work done to improve and extend the new reference catalogue of global earthquakes instrumentally recorded since 1904, the ISC-GEM Catalogue. We have added thousands of earthquakes between 1904 and 1959 and in recent years compared to the 2013 release. As earthquake catalogues are widely used for different aspects of research, we believe that this dataset will be instrumental for years to come for researchers involved in studies on seismic hazard and patterns of the Earth's seismicity.
Laura Sánchez, Christof Völksen, Alexandr Sokolov, Herbert Arenz, and Florian Seitz
Earth Syst. Sci. Data, 10, 1503–1526, https://doi.org/10.5194/essd-10-1503-2018, https://doi.org/10.5194/essd-10-1503-2018, 2018
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We provide a surface-kinematics model for the Alpine region based on high-level data analysis of 300 geodetic stations continuously operating over 12.4 years. This model includes a deformation model, a continuous velocity field, and a strain field consistently assessed for the entire Alpine mountain belt. Horizontal and vertical motion patterns are clearly identified and supported by uncertainties better than ±0.2 mm a−1 and ±0.3 mm a−1 in the horizontal and vertical components, respectively.
Ingo Sasgen, Alba Martín-Español, Alexander Horvath, Volker Klemann, Elizabeth J. Petrie, Bert Wouters, Martin Horwath, Roland Pail, Jonathan L. Bamber, Peter J. Clarke, Hannes Konrad, Terry Wilson, and Mark R. Drinkwater
Earth Syst. Sci. Data, 10, 493–523, https://doi.org/10.5194/essd-10-493-2018, https://doi.org/10.5194/essd-10-493-2018, 2018
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We present a collection of data sets, consisting of surface-elevation rates for Antarctic ice sheet from a combination of Envisat and ICESat, bedrock uplift rates for 118 GPS sites in Antarctica, and optimally filtered GRACE gravity field rates. We provide viscoelastic response functions to a disc load forcing for Earth structures present in East and West Antarctica. This data collection enables a joint inversion for present-day ice-mass changes and glacial isostatic adjustment in Antarctica.
Kristian Kjellerup Kjeldsen, Reimer Wilhelm Weinrebe, Jørgen Bendtsen, Anders Anker Bjørk, and Kurt Henrik Kjær
Earth Syst. Sci. Data, 9, 589–600, https://doi.org/10.5194/essd-9-589-2017, https://doi.org/10.5194/essd-9-589-2017, 2017
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Here we present bathymetric and hydrographic measurements from two fjords in southeastern Greenland surveyed in 2014, leading to improved knowledge of the fjord morphology and an assessment of the variability in water masses in the fjords systems. Data were collected as part of a larger field campaign in which we targeted marine and terrestrial observations to assess the long-term behavior of the Greenland ice sheet and provide linkages to modern observations.
Johannes Petrone, Gustav Sohlenius, Emma Johansson, Tobias Lindborg, Jens-Ove Näslund, Mårten Strömgren, and Lars Brydsten
Earth Syst. Sci. Data, 8, 663–677, https://doi.org/10.5194/essd-8-663-2016, https://doi.org/10.5194/essd-8-663-2016, 2016
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This paper presents data and resulting models of spatial distributions of maximum active layer thickness and sediment thickness and their connection to surface vegetation and topography from the Kangerlussuaq region, western Greenland. The data set constitutes geometrical information and will be used in coupled hydrological and biogeochemical modeling together with previous published hydrological data (doi:10.5194/essd-7-93-2015, 2015) and biogeochemical data (doi:10.5194/essd-8-439-2016, 2016).
B. K. Biskaborn, J.-P. Lanckman, H. Lantuit, K. Elger, D. A. Streletskiy, W. L. Cable, and V. E. Romanovsky
Earth Syst. Sci. Data, 7, 245–259, https://doi.org/10.5194/essd-7-245-2015, https://doi.org/10.5194/essd-7-245-2015, 2015
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This paper introduces the new database of the Global Terrestrial Network for Permafrost (GTN-P) on permafrost temperature and active layer thickness data. It describes the operability of the Data Management System and the data quality. By applying statistics on GTN-P metadata, we analyze the spatial sample representation of permafrost monitoring sites. Comparison with environmental variables and climate projection data enable identification of potential future research locations.
P. Arason, G. N. Petersen, and H. Bjornsson
Earth Syst. Sci. Data, 3, 9–17, https://doi.org/10.5194/essd-3-9-2011, https://doi.org/10.5194/essd-3-9-2011, 2011
Cited articles
Anisimov, C. V., Dmitriev, E. M., Guryev, A. V., and Filippov, V. A.:
Calculation of K-indices of geomagnetic activity in real time,
Heliogeophys. Res., 13, 62–72, 2015 (in Russian).
Bartels, J.: Potsdamer erdmagnetische Kennziffern, 1. Mitteilung,
Z. Geophys., 14, 68–78, 1938 (in German).
Bartels, J.: Potsdamer erdmagnetische Kennziffern, 4. Mitteilung,
Z. Geophys., 15, 214–221, 1939 (in German).
Bartels, J.: The standardized index, Ks, and the planetary index, Kp, IATME Bull., 12b, Washington, DC, USA, 97–120, 1949.
Bartels, J., Heck, N. H., and Johnston, H. F.: The three-hour-range index
measuring geomagnetic activity, J. Geophys. Res., 44,
411–454, https://doi.org/10.1029/te044i004p00411, 1939.
Belov, B. A., Burtsev, Y. A., Kiriakov, V. K., and Lyubimov, V. V.:
Digital quartz magnetic variation stations, in: 170 years of
observatory observations in the Urals: history and current state,
Proceedings of the international seminar, Yekaterinburg, 17–23 July 2006, Yekaterinburg, 19–23, 2006 (in Russian).
Berthelier, A.: The K-derived planetary indices: derivation, meaning and
uses in solar terrestrial physics, in: STPW-IV proceedings, 3, 3–20, edited by:
Hruska, J., Shea, M. A., Smart, D. F., and Heckman, G., US Gov. Publications Office, Boulder CO, 1993.
Bobrov, V. N.: Universal highly stable sensitive element with zero
temperature coefficient for magnetometers, variometers and microvariometers
registering any component of the Earth's magnetic field, Trudy
IZMIRAN (Works of IZMIRAN), 18, 55–67, 1961 (in Russian).
Burtsev, Y. A., Mansurov, S. M., and Timofeev, G. A.: Autonomous variation
station for geomagnetic research in Antarctica, in: Geomagnetic
instrument engineering, edited by: Dolginov, S., Nauka Press, Moscow, 1977 (in Russian).
Dmitriev, E. M. and Filippov, V. A.: Algorithm for calculation of indices of
geomagnetic activity, in: V International
conference “Solar-terrestrial relations and physics of earthquake
precursors”, Paratunka, Kamchatka region, 2–7 August 2010, Collection of the reports, edited by: Shevtsov, B. M. and Bogdanov, V. V., IKIR, FEB RAS, Petropavlovsk-Kamchatsky, 110–113, 2010 (in Russian).
Golovkov, V. P., Papitashvili, V. O., and Papitashvili, N. E.: Automated
calculation of K-indices using the method of natural orthogonal components,
Geomagn. Aeronomy, 29, 514–517, 1989.
Gvishiani, A. and Soloviev, A.: EMF Observations and Data Processing, in:
Observations, Modeling and Systems Analysis in Geomagnetic Data
Interpretation, Springer Nature Switzerland AG, Cham, Switzerland, 29–96, https://doi.org/10.1007/978-3-030-58969-1_2, 2020.
Hopgood, P. A.: On the computer generation of geomagnetic K-indices from
digital data, J. Geomagn. Geoelectr., 38, 861–871,
https://doi.org/10.5636/jgg.38.861, 1986.
Jankowski, J. A., Ernst, T., Sucksdorff, C., Pirjola, R., and Ryno, J.:
Experiences of a filter method and a standard curve method for determining
K-indices, Ann. Geophys., 6, 589–594, 1988.
Lincoln, J. V.: Geomagnetic indices, in: Physics of Geomagnetic Phenomena,
Vol. 1, edited by: Matsushita, S. and Campbell, W. H., Academic, New York,
67–100, 1967.
Love, J. J. and Remick, K. J.: Magnetic Indices, in: Encyclopedia of
Geomagnetism and Paleomagnetism, Springer Netherlands, Dordrecht, 509–512, https://doi.org/10.1007/978-1-4020-4423-6_178, 2007.
Lyubovtseva, Y. S., Gvishiani, A. D., Soloviev, A. A., Samokhina, O. O., and
Krasnoperov, R. I.: Sixtieth anniversary of the International Geophysical
Year (1957–2017) – contribution of the Soviet Union, Hist. Geo Space.
Sci., 11, 157–171, https://doi.org/10.5194/hgss-11-157-2020, 2020.
Mayaud, P. N.: Atlas of indices K, Part 1, IAGA Bull., 21, IUGG Publ. Office, Paris, 113 pp., 1967.
Mayaud, P. N.: Derivation, meaning and use of geomagnetic indices,
Geophysical Monograph, 22, AGU, Washington, DC, 154 pp., https://doi.org/10.1002/9781118663837.fmatter, 1980.
Menvielle, M. and Berthelier, A.: The K-derived planetary indices:
Description and availability, Rev. Geophys., 29, 415–432,
https://doi.org/10.1029/91rg00994, 1991.
Menvielle, M., Papitashvili, N., Hakkinen, L., and Sucksdorff, C.: Computer
production of K indices: review and comparison of methods, Geophys.
J. Int., 123, 866–886,
https://doi.org/10.1111/j.1365-246x.1995.tb06895.x, 1995.
Menvielle, M., Iyemori, T., Marchaudon, A., and Nosé, M.: Geomagnetic
Indices, in: Geomagnetic Observations and Models, edited by: Mandea, M. and Korte, M.,
IAGA Special Sopron Book Series 5, Springer Science+Business Media B.V.,
183–228, https://doi.org/10.1007/978-90-481-9858-0_8, 2011.
Nechaev, S. A.: Guide for stationary geomagnetic observations,
Irkutsk: Institute of geography SB RAS, 140 pp., ISBN 5-94797-093-7, 2006 (in Russian).
Nicolet, M.: Historical aspects of the IGY, History of Geophysics, 1,
44–46, https://doi.org/10.1029/HG001p0044, 1984.
Raspopov, O. M., Kuz'min, I. A., and Kharin, E. P.: The 50th
anniversary of International Geophysical Year (1957–1958): from the First
International Polar Year (1882–1883) to the International Heliophysical
Year (2007–2008) and International Polar Year (2007–2009), Geomagn.
Aeronomy, 47, 1–7, https://doi.org/10.1134/s001679320701001x, 2007.
Rodnikov, A. G., Sergeyeva, N. A., and Zabarinskaya, L. P.: Research on the
Earth's Interior Conducted by Russia after IGY: The Geotraverse Project and
“INTERMARGINS”, Data Sci. J., 8, S24–S34, https://doi.org/10.2481/dsj.8.S24,
2009.
Sergeyeva, N., Gvishiani, A., Soloviev, A., Zabarinskaya, L., Krylova, T.,
Nisilevich, M., and Krasnoperov, R.: Historical K index data collection of
Soviet magnetic observatories, 1957–1992, PANGAEA,
https://doi.org/10.1594/PANGAEA.922233, 2020.
Sucksdorff, C., Pirjola, R., and Häkkinen, L.: Computer production of
K-indices based on linear elimination, Geophys. Trans., 36,
333–345, 1991.
Takahashi, K., Toth, B. A., and Olson, J. V.: An automated procedure for
near-real-time Kp estimates, J. Geophys. Res.-Space,
106, 21017–21032, https://doi.org/10.1029/2000ja000218, 2001.
Wilkinson, M. D., Dumontier, M., Aalbersberg, I. J., Appleton, G., Axton, M., Baak, A., Blomberg, N., Boiten, J-W., Santos, L., Bourne, P. E., Bouwman, J., Anthony J. Brookes, A. J., Clark, T., Crosas, M., Dillo, I., Dumon, O., Edmunds, S., Evelo, C. T., Finkers, R., Gonzalez-Beltran, A., Gray, A. J. G., Groth, P., Goble, C., Grethe, J. S., Heringa, J., C ’t Hoen, P. A., Hooft, R., Kuhn, T., Kok, R., Kok, J., Lusher, S. J., Martone, M. E., Mons, A., Packer, A. L., Persson, B., Rocca-Serra, P., Roos, M., van Schaik, R., Sansone, S.-A., Schultes, E., Sengstag, T., Slater, T., Strawn, G., Swertz, M. A., Thompson, M., van der Lei, J., van Mulligen, E., Velterop, J., Waagmeester, A., Wittenburg, P., Wolstencroft, K., Zhao, J., and Mons, B.: The FAIR
Guiding Principles for scientific data management and stewardship, Sci. Data,
3, 160018, https://doi.org/10.1038/sdata.2016.18, 2016.
World Data Center for Solar-Terrestrial Physics: Digital Images of Magnetograms, available at: http://www.wdcb.ru/stp/geomag/magnetogr_list.en.html, last access: 4 May 2021a.
World Data Center for Solar-Terrestrial Physics: K and C indices according to the data
of 40 observatories of Russia and the CIS countries and stations “North Pole”, available at: http://www.wdcb.ru/stp/data/K_indices/, last access: 4 May 2021b.
Zabolotnaya, N. A.: Indices of geomagnetic activity: reference guide, 2nd Edn., LKI Publishing house, Moscow, Russia, 88 pp., 2007 (in Russian).
Short summary
The K index is the classical, commonly used parameter of geomagnetic activity that serves as the measure of local magnetic field variations. This paper presents a unique collection of historical K index values that was formed at the World Data Center for Solar-Terrestrial Physics in Moscow. It includes the results of the K index determination at 41 geomagnetic observatories of the former USSR for the period from July 1957 to the early 1990s.
The K index is the classical, commonly used parameter of geomagnetic activity that serves as the...
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