440 Works

Magnetic repeat station survey of Germany 1999/2000

Monika Korte & Martin Fredow
In this report we describe the new repeat station network, the measurements and some tests regarding the use of the variometer recordings for data processing, and we present the results of this latest German magnetic survey.

INTERMAGNET Technical Reference Manual, Version 5.0.0

Benoit St-Louis, &

Simulation study of hydrate formation from dissolved methane in the LArge-scale Reservoir Simulator (LARS)

Zhen Li , Thomas Kempka , Erik Spangenberg & Judith Schicks
Hydrate formation from dissolved methane in saline solutions is a hydrochemical process, resulting in the accumulation of gas hydrates in sedimentary strata under the seafloor or overlain by permafrost regions. In the scope of the SUGAR framework, LARS has been established to study gas hydrate formation processes and dissociation strategies under in-situ conditions. In the latest hydrate formation experiments, key parameters have been applied to mimic the local marine environment of the Mallik site, Canada....

Evaluierung geowissenschaftlicher und wirtschaftlicher Bedingungen für die Nutzung hydrogeothermaler Ressourcen

Kemal Erbas, Andrea Seibt, Peer Hoth & Ernst Huenges
Scientific Technical Report STR ; 99/09

Inverse geochemical modelling demonstrates how weathering and ion surface exchange control groundwater chemistry in the Pra Basin (Ghana)

Evans Manu , Michael Kühn , Thomas Kempka & Marco De Lucia
Effective implementation of sustainable water resources management is one of the daunting tasks in most parts of the world. The Pra Basin has a high economic importance, hosting most of Ghana’s mineral resources, including gold, bauxite, iron, manganese, and diamonds. Currently, the basin is faced with several water resources management issues, especially pollution arising from the discharge of untreated waste into water bodies and illegal artisanal mining. Considering this background, the present study aims to...

Cermak7 - 7th International Meeting on Heat Flow and the Thermal Structure of the Lithosphere, 20-22 June 2022, Potsdam, Germany

Sven Fuchs, Ben Norden & Angela Spalek

EnMAP Science Plan

Sabine Chabrillat, Luis Guanter, Hermann Kaufmann, Saskia Foerster, Alison Beamish, Arlena Brosinsky, Hendrik Wulf, Saeid Asadzadeh, Mathias Bochow, Niklas Bohn, Nina Boesche, Astrid Bracher, Maximilian Brell, Henning Buddenbaum, D. Cerra, S. Fischer, T. Hank, U. Heiden, Birgit Heim, Wieke Heldens, J. Hill, Andre Hollstein, Patrick Hostert, Hajo Krasemann, L. LaPorta … & Karl Segl
EnMAP Technical Report;

The impact of hydrothermal alteration on the physiochemical characteristics of reservoir rocks: the case of the Los Humeros geothermal field (Mexico)

Leandra M. Weydt, Federico Lucci, Alicja Lacinska, Dirk Scheuvens, Gerardo Carrasco-Núñez, Guido Giordano, Christopher A. Rochelle, Stefanie Schmidt, Kristian Bär & Ingo Sass
Abstract Hydrothermal alteration is a common process in active geothermal systems and can significantly change the physiochemical properties of rocks. To improve reservoir assessment and modeling of high-temperature geothermal resources linked to active volcanic settings, a detailed understanding of the reservoir is needed. The Los Humeros Volcanic Complex, hosting the third largest exploited geothermal field in Mexico, represents a natural laboratory to investigate the impact of hydrothermal processes on the rock properties through andesitic reservoir...

Revised and improved geological model of the Waiwera geothermal reservoir, New Zealand

Andreas Grafe , Thomas Kempka , Michael Schneider & Michael Kühn
Following a thermal and photogrammetric outcrop mapping campaign undertaken at the Waiwera geothermal reservoir in 2019, a pre-existing 3D hydrogeological model was revised in the present study to assess the impact of the updated structural and lithological interpretation on the existing numerical model calibration. For the latter, well data comprising measured temperature and salinity profiles were employed to reconstruct the reservoir’s natural thermal state and spatial distribution of salinity, supported by numerical simulations of density-driven...

Telecentric bright-field transmitted light microscopic dataset

Ali Ghaznavi, Renata Rychtáriková, Mohammadmehdi Saberioon & Dalibor Štys
Living cell segmentation from bright-field light microscopic images is challenging due to the image complexity and temporal changes in the living cells. Recently developed deep learning (DL)-based methods became popular in medical and microscopic image segmentation tasks due to their success and promising outcomes. The main objective of this paper is to develop a deep learning, UNet-based method to segment the living cells of the HeLa line in bright-field transmitted light microscopy. To find the...

The Helmholtz Research Field Earth & Environment DataHub and its NFDI4Earth connection

Peter Braesicke , Roland Bertelmann , Jan Bumberger & Sören Lorenz
Digitalisation and FAIR data are overarching elements in the Helmholtz Research Field Earth and Environment (RF E&E) Program-Oriented Funding Phase IV (PoF IV). Already in the transition years from PoF III to PoF IV (2019/2020) different measures were implemented to facilitate this aim. One of them is the so-called DataHub, with the aim that all Earth System (ES) data that is generated by the RF E&E will be available as FAIR data via a common...

Helmholtz Open Science Briefing. Helmholtz Open Science Forum Forschungssoftware. Report

Heinz Pampel, Nina Leonie Weisweiler, Roland Bertelmann, Wolfgang zu Castell, Suenje Dallmeier-Tiessen, Ronny Gey, Tobias Huste, Nicole Jung, Amir Kalali , Uwe Konrad, Christian Meeßen, Sebastian Müller, Dennis Oliveira & Tobias Schlauch
Das Helmholtz Forum Forschungssoftware, welches gemeinsam von der Task Group Forschungssoftware des AK Open Science und dem HIFIS Software Cluster getragen wird, veranstaltete am 7. April 2022 ein Helmholtz Open Science Forum zum Thema Forschungssoftware. Die Veranstaltung wurde vom Helmholtz Open Science Office organisiert. Das virtuelle Forum widmete sich drei Aspekten beim offenen und nachhaltigen Umgang mit Forschungssoftware in der Helmholtz-Gemeinschaft: Policy, Praxis sowie Infrastrukturen und Tools. Die Veranstaltung war die zweite einer Reihe von...

Satellitendaten prozessieren – Die Sentinel-Anwendungs-Plattform SNAP

Helga Kuechly, Antonia Cozacu, Oliver Fabisch & Nora Meyer zu Erpen
Sollen Satellitendaten bearbeitet werden, ist die von der ESA bereitgestellte kostenlose Software SNAP sehr gut geeignet, besonders für Sentineldaten. Aber wie funktioniert das englischsprachige Programm? Das Extra-Handbuch aus der Reihe SAPIENS: Satellitendaten für Planung, Industrie, Energiewirtschaft und Naturschutz erklärt anschaulich die wichtigsten Schritte und Funktionen. Wir zeigen, wie man Satellitenszenen einladen, visualisieren, atmoshärisch korrigieren, mit verschiedensten Werkzeugen bearbeiten und dabei häufige Arbeitsschritte automatisieren kann. Ein ganzes Kapitel ist außerdem der Vielzahl von Indizes gewidmet, die...

Passende Satellitendaten finden – Das Datenportal CODE-DE

Antonia Cozacu, Helga Kuechly, Claudia Vallentin, Seraphine Luneau, Clara Nicolai & Nora Meyer zu Erpen
Das Datenportal CODE-DE ist eine zentrale Anlaufstelle für Copernicusdaten in Deutschland. Kostenlos und auf deutscher Sprache wird den Nutzenden auf verschiedenen Wegen der Zugriff auf Satellitendaten ermöglicht. Im dritten Dokument aus der Reihe SAPIENS: Satellitendaten für Planung, Industrie, Energiewirtschaft und Naturschutz zeigen wir, wie man mit dem EO Browser und EO Finder von CODE-DE die passenden Satellitendaten suchen, finden, visualisieren und herunterladen kann.

Western Canada Regional Long Period MT Surveys

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Long-period magnetotelluric surveys in Western Canada funded by NSERC and the University of Alberta. Data collection and processing were done by the University of Alberta.

Helmholtz Open Science Forum: Publikationskostenmanagement. Helmholtz Open Science Briefing. (Version 1.0)

Lea Maria Ferguson, Irene Barbers, Christoph Bruch, Roland Bertelmann, Marcel Meistring, Michael Normann, Diana Otto, Heinz Pampel, Antonia Schrader, Paul Schultze-Motel, LIsa-Marie Stein & Nina Leonie Weisweiler
Am 14. September 2022 veranstaltete das Helmholtz Open Science Office ein Helmholtz Open Science Forum zum Thema Publikationskostenmanagement. Die virtuelle Veranstaltung widmete sich den Herausforderungen der Erfassung und Analyse von Publikationen und Kosten im Kontext der Open-Access-Transformation. Gemeinsam mit den Referent:innen und rund 50 Teilnehmenden aus Helmholtz wurden Strategien und Praktiken der Helmholtz-Zentren und ihrer Bibliotheken in diesem Handlungsfeld beleuchtet. Der vorliegende Bericht dokumentiert die Veranstaltung.

The SpannEnD project – Towards a robust prediction of the 3D stress state in the upper crust of Germany

Karsten Reiter , Steffen Ahlers , Sophia Morawietz , Luisa Röckel , Tobias Hergert , Andreas Henk , Birgit Müller & Oliver Heidbach
The assessment of the long-term stability of geological units in the context of subsurface use is a complex topic in which various geoscientific and technical aspects play an important role. For example, the geomechanical stability of radioactive waste repositories due to endogenous, exogenous and engineering processes is an important aspect in the long term. For a stability prognosis, an estimation of the recent stress state as well as an assessment of realistic future stress changes...

Additional file 4 of MarineMetagenomeDB: a public repository for curated and standardized metadata for marine metagenomes

Muhammad Kabiru Nata’ala, Anderson P. Avila Santos, Jonas Coelho Kasmanas, Alexander Bartholomäus, João Pedro Saraiva, Sandra Godinho Silva, Tina Keller-Costa, Rodrigo Costa, Newton C. M. Gomes, André Carlos Ponce de Leon Ferreira de Carvalho, Peter F. Stadler, Danilo Sipoli Sanches & Ulisses Nunes da Rocha
Additional file 4. Table S4: Marine ‘MarMDB’ attributes groups and their respective values.

Seismic velocity variation at Mt. Etna calculated by seismic ambient noise interferometry (EtnadVv)

Pınar Büyükakpınar, Andrea Cannata, Flavio Cannavò, Raphael De Plaen & Thomas Lecocq
The raw seismic data is band-pass filtered between 1.0-2.0 Hz, down-sampled from 100 to 20 Hz, and de-trended. Daily traces is segmented into 1-hr windows, winsorizing (clipping) at 3 Root Mean Square (RMS), and spectral whitening in the 1.0–2.0 Hz frequency band is applied before cross-correlation (Bensen et al., 2007; Lecocq et al., 2014). The resulting daily CCFs are then stacked using the time-frequency phase-weighted stacking method (tf-PWS; Schimmel & Paulssen, 1997) for 1,5,10,30 days...

Verträglichkeitsprüfung zur INTERMAGNET-Station zwecks Umsetzung der Sensoren ins Variationshaus: Temperaturabhängigkeit der Sensoren

E. Pulz & Hans-Joachim Linthe
Scientific Technical Report STR; 95/09

Strategies to enable FAIR and Open Data and Software

Andreas Hübner & Dirk Fleischer
Demands for integrity, transparency and reproducibility of today's research are increasing, posing new challenges for research data and software management in all science communities. The geoscience community is responding to these requests with a growing number of scientific networks and strategic initiatives, at different levels and with varying thrust. Clearly, publicly funded geoscience research data and software will increasingly be part and parcel of these frameworks: among them national efforts such as the German National...

Earth Surface Dynamics and Processes under Climatic and Tectonic controls

Michael Krautblatter, Aaron Bufe & Stefanie Tofelde
Earth's surface is subject to a complex interplay of tectonic, atmospheric, and biologic forcing and processes of chemical and physical weathering and erosion. In turn, surface processes can modulate climate, tectonics, and life by the cycling of sediments, water, nutrients, and carbon. Predicting the sensitivity of the Earth's surface to changes in climatic or tectonic forcing, therefore requires an understanding of individual processes as well as their interactions across spatial and temporal scales. Here we...

The H2020 REFLECT project: Deliverable D2.4 - Thermophysical properties of highly saline geothermal fluids

Harald Milsch, Ulrike Hoffert, Juliane Kummerow, Arnault Lassin & Laurent ANDRE
Deliverable D2.4 reports on the activities performed within Task 2.4 “Thermophysical properties of geothermal fluids” until the end of month 36 of the REFLECT project. The task breaks down into three subtasks of different scope: Task 2.4.1 - In situ measurements of fluid thermophysical properties, Task 2.4.2 - Thermoelectrical properties, and Task 2.4.3 - Modelling of density and heat capacity. Overall, a better understanding of the thermophysical properties of highly saline geothermal fluids was obtained...

Deep Rock Weathering Episode 3 – Reagents that Dissolve Minerals

Friedhelm von Blanckenburg
To weather rock, reagents are required. For example, CO2 is found in rainwater as carbonic acid or CO2 is produced by plant roots and by microbes. Through the large fractures carbonic acid and CO2 reach great depth – dissolved in water. Through the fine fractures they reach the interior of the rock. There they dissolve minerals, like the feldspar. New, completely different minerals form, for example clay minerals. They create fine fractures through which water...

Wie steht es um die Gletscher in Zentralasien? Ein Lagebericht auf der Grundlage satelliten- und bodengestuetzter Messungen

Daniel Farinotti, Andreas Güntner, Franz Barthelmes, Sergiy Vorogushyn & Doris Duethmann
Glaciers play an important role in the water cycle of many regions of the world, especially in dry regions such as Central Asia. Glaciers can store water over decades and transfer winter precipitation into the summer months by releasing the accumulated snow and ice as melt water. The question about the state of the glaciers within a region is therefore intrinsically linked to questions about water availability and food security. We assess the current state...

Registration Year

  • 2023
    21
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    134
  • 2021
    120
  • 2020
    71
  • 2019
    3
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    4
  • 2017
    27
  • 2016
    1
  • 2015
    2
  • 2013
    12

Resource Types

  • Text
    356
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    25
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    9
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    6
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    6
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Affiliations

  • Helmholtz Centre Potsdam - GFZ German Research Centre for Geosciences
    435
  • Helmholtz Association of German Research Centres
    71
  • Helmholtz Centre for Environmental Research
    29
  • Karlsruhe Institute of Technology
    28
  • University of Lisbon
    19
  • Federal University of Technology – Paraná
    18
  • University of Aveiro
    18
  • University of Algarve
    18
  • Universidade de São Paulo
    17
  • University of Potsdam
    17