126 Works

Integrated Processing of GNSS an VLBI on the Observation Level

Jungang Wang
The Global Geodetic Reference Frame (GGRF) plays a fundamental role in geodesy and related Positioning, Navigation, and Timing applications, and allows to quantify the Earth’s change in space and time. The ITRF and ICRF are the two most important components to realize GGRF, while the determination of these two reference frames relies on the combination of several space geodetic techniques, mainly, VLBI, SLR, GNSS, and DORIS. The combination is currently done on either the parameter...

Recommendations for Policies of the Helmholtz Centers on Research Data Management

The present Recommendations for Policies of the Helmholtz Centers on Research Data Management were adopted on September 13/14, 2017 by the Assembly of Members of the Helmholtz Association of German Research Centers. It was emphasized that, for the Helmholtz Association, open access and technology transfer are goals of equal importance whose possibly diverging requirements have to be weighed against each other in each individual case.

Gesteinseigenschaften geben den Ton an

Steffi Genderjahn, Anja Schleicher, Valerian Schuster, Julia Mitzscherling, Dirk Wagner, Erik Rybacki & Georg Dresen
Die geowissenschaftlichen Abwägungskriterien des Standortauswahlgesetzes dienen der Beschreibung der geologischen Gesamtsituation der Wirtsgesteine, sowie der Bewertung potenzieller Standortregionen für ihre Eignung als Endlager. Tonsteine verfügen unter anderem über eine geringe Durchlässigkeit für Flüssigkeiten und Gase, sowie über ein großes Isolations- und Rückhaltevermögen für Radionuklide. Aufgrund dieser und anderer positiver Eigenschaften werden Tonsteine als Wirtsgestein für die Endlagerung von radioaktiven Abfällen in Betracht gezogen.

Stabilität über eine Million Jahre

Richard Ott, Boris Gailleton, Luca Malatesta, Lukas Becker & Jean Braun
Die langfristige Sicherheit der Endlagerung radioaktiver Abfälle in tiefen geologischen Formationen beruht auch darauf, dass der einschlusswirksame Gebirgsbereich nicht durch Erosion in einem Zeitraum von einer Million Jahren freigelegt wird. Mit geologischen Daten und numerischen Modellen der Landschaftsentwicklung kann quantifiziert werden, wie schnell beispielsweise Gletscher, Flüsse und tektonische Prozesse die Landschaft verändern und wie wahrscheinlich es ist, dass ein Endlager durch diese Prozesse an die Erdoberfläche gelangt.

Zur Korrelation des tektonischen Baues mit den seismischen Strukturen im Raum KTB-Oberpfalz – Münchberger Gneismasse

G. Stettner
In der folgenden Darstellung wird davon ausgegangen, daß bei der reflexionsseismischen Erkundung von Krustenstrukturen altere orogentektonische Strukturen wahrscheinlich nur bei günstiger Geometrie und Tiefenlage erfaßt werden konnen. Eine grobe lithologische Differenzierung mit ausreichenden Elastizitatsunterschieden ist im fraglichen Raum auf einen bestimmten Krustentyp, das Bohemikum, beschrankt. Dessen größte Mobilitat ist wahrscheinlich mit der spätkaledonischen Tektogenese nach Ablauf des Silurs verbunden. Das Bohemikum beinhaltet machtige und lateral aushaltende Metabasite und liegt in groBeren Abschnitten relativ flach. Dies...

3-D ESP - Experiment of the Integrated Seismics Oberpfalz

H. Wiederhold
KTB-Reports; 90-6b

Introduction to ISO 89

H.-J. Dürbaum
KTB-Reports; 90-6b

Reflectance spectra and LIBS data of 16 iron-bearing surface samples from Rammelsberg – a non-ferrous metal mine in the Harz Mountains near Goslar, Germany

Justus Constantin Hildebrand, Nicole Köllner, Friederike Kästner, Friederike Koerting & Christian Mielke
This Technical Report presents data from a solaroptical spectral investigation in the area of the Rammelsberg non-ferrous metal mine in the Harz Mountains near the city of Goslar. The investigation refers to the local communion stone quarry (“Kommunionssteinbruch”) above the former mining area. As this is a nature conservation zone, all measurements were carried out in-situ without any physical sampling action. The field measurements were carried out in June 2019 in cooperation with Bergbau Goslar...

Interpretation of Envelope-stacked 3D Seismic Data and its Migration - Another Approach

H. Wiederhold
KTB-Reports ; 92-5

Seismic Anisotropy at the KTB Deep Drilling Site

W. Rabbel
Based on the DEKORP ISO 89 borehole experiments, the question of the existence of "seismic anisotropy at the KTB deep drilling site" has to be answered unambiguously with "yes". The anisotropy could be quantified in situ for a gneiss packet where it is apparently influenced by both rock foliation and cracks. The values obtained in the direct vicinity of the KTB pilot hole, however, cannot be extrapo l ated into its surroundings without modification: While...

Results of the 3-D Expanding Spread Experiment

C. Bönnemann & B. Buttkus
The 3-D expanding spread experiment, performed within ISO 89 at the KTB site, has been evaluated under two aspects. The first aspect was the estimation of velocity-depth functions. Due to the limited reflection strength, estimating NMO velocities as a function of twoway traveltime was possible in east-west direction only. Thus the calculation of interval velocities, requiring the correction of 3D effects, was not possible. The second aspect was the directional dependency of the P-wave velocity...

On the Geological Interpretation of the 3D-Seismic Data with Special Regard to the Information from the KTB Boreholes

G. Hirschmann
KTB-Reports; 92-5

Practical steps towards reproducible research

Heidi Seibold

Open Science Factsheet No. 9 based on the 64th online seminar: OpenAlex

Heather Piwowar, Lea Maria Ferguson, Antonia Schrader & Nina Leonie Weisweiler

9th International Conference on Polar and Alpine Microbiology, Abstract Volume

Dirk Wagner, Liane G. Benning, Susanne Liebner & Sizhong Yang

New clues to the Moldanubian puzzle: structural and petrological observations from the Waldmünchen area, eastern Bavaria

D. Tanner, J. Schuster, J. Behrmann & P. O'Brien
KTB-Reports ; 93-2

Advanced ionospheric current estimates by means of the Swarm constellation mission: A selection of representative results

Hermann Lühr, Guram Kervalishvili, Jan Rauberg, Ingo Michaelis & Claudia Stolle
ESA's Earth Observation Mission Swarm, launched on 22 November 2013, provides the opportunity of reliable electric current estimates in the ionosphere based on multisatellite magnetic field measurements. The lower pair, Swarm A/C flying side-by-side at a longitudinal separation of 1.4°, is well suited for determining radial currents. The higher satellite, Swarm B flying at 520 km altitude, provides from time to time wellmatched observations with the 50 km lower pair, which can be used for...

Turkish-German Symposium on Seismotectonic Research in the Marmara Region, Abstract Book

Murat Nurlu, Marco Bohnhoff, Kerem Kuterdem, Patricia Martínez-Garzón & Ayşe Sezin Yılmaz

Helmholtz Open Science Policy. Version 1.0. Approved in the 119th General Assembly of the Helmholtz Association on 20-21 September 2022

The present Helmholtz Open Science Policy is organized into three sections. In the section “A. Strategic Positioning,” the Helmholtz Association formulates a commitment to open science in accordance with the principle “as open as possible and as closed as necessary.” In the section “B. Monitoring,” Helmholtz makes a commitment to open science on the basis of the three current focus areas (open access, open research data, and open research software) through specific and verifiable objectives....

Die Sicherung der alten Meßpfeiler und ihre Rekonstruktion auf dem Dach von Gebäude A17

Christoph Förste

The H2020 REFLECT project: Deliverable 6.3 - Webinars

Alberto Sánchez Miravalles & María A. López
This report summarises the webinars organised in the REFLECT project between 2021 and 2022, in the framework of the WP6 Dissemination and exploitation, Task 6.2 – Ensure transferability and exploitation of project results. The Task 6.2 planned to inform the stakeholders identified in the matrix developed under Task 6.1 about the project activities and main outcomes. For this purpose, periodic webinars have been organised between 2021 and 2022 presenting these results and information.

A preliminary tectono-thermal model for the KTB deduced from apatite, zircon and sphene fission-track analysis

J. Jacobs, E. Hejl, P. Van den Haute & G.A. Wagner
KTB-Reports ; 93-2

Open-Access-Reporting – Kriterien und Erhebungspraxis. Diskussionspapier der AG Wissenschaftliches Publikationssystem in der Schwerpunktinitiative „Digitale Information“ der Allianz der deutschen Wissenschaftsorganisationen

, Gernot Deinzer, Kai Geschuhn, Bernhard Mittermaier, Heinz Pampel, Eric Retzlaff, Stefanie Seeh & Olaf Siegert

The H2020 REFLECT project: Deliverable 2.6 - Role of microorganism and organic compounds

Hartmut Fischer, Danaé Bregnard, Alessio Leins, Andrea Vieth-Hillebrand, Simona Regenspurg & Pilar Junier
The evaluation of the effect of organic compounds and microorganisms in formation and precipitation of colloids using artificial brines was performed by TNO using selected organic compounds based on the analysis of sampled fluids corresponding to the information gathered on the sites by GFZ. The same was done with biofilms prepared with microorganisms (Thermaerobacter sp., Penicilium citrinum) isolated from geothermal stations by UNINE. All carboxylic acids tested had an inhibiting effect on the precipitation of...

Modelle simulieren die Zukunft

Michael Kühn, Theresa Hennig, Oliver Heidbach & Magdalena Scheck-Wenderoth
Modelle und Simulationen erlauben eine Prognose, wie sich Prozesse in der Geosphäre unter Berücksichtigung der physikalischen und chemischen Gesetzmäßigkeiten in der Zukunft entwickeln. Sie sind die Grundlage, um Entwicklungsszenarien zu prüfen und darüber praktikable Entscheidungen treffen zu können. Nur so ist z. B. eine Quantifizierung potenzieller Radionuklidmigration im hydrogeologischen System des einschlusswirksamen Gebirgsbereichs und damit eine Bewertung des Rückhaltevermögens eines Endlagers für eine Million Jahre möglich.

Registration Year

  • 2022
    126

Resource Types

  • Book Chapter
    53
  • Report
    31
  • Text
    23
  • Conference Proceeding
    7
  • Journal Article
    6
  • Book
    5
  • Conference Paper
    1

Affiliations

  • Helmholtz Centre Potsdam - GFZ German Research Centre for Geosciences
    50
  • Helmholtz Association of German Research Centres
    21
  • Forschungszentrum Jülich
    10
  • University of Potsdam
    7
  • Karlsruhe Institute of Technology
    6
  • German Aerospace Center
    5
  • Deutsches Elektronen-Synchrotron DESY
    4
  • Helmholtz-Zentrum Dresden-Rossendorf
    4
  • Technical University of Berlin
    4
  • Helmholtz Centre for Environmental Research
    3