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DIGIS Geochemical data for GEOROC 2.0

The DIGIS geochemical data repository is a research data repository in the Earth Sciences domain with a specific focus on geochemical data. The repository archives, publishes and makes accessible user-contributed, peer-reviewed research data in stan…
Declination Calculator for the International Geomagnetic Reference Field IGRF

The declination calculator provides declination values for any location on Earth and any time between 1900 and 2025. The calculation is based on the International Geomagentic Reference Field (IGRF) which describes the geomagnetic core field. The cal…
EMS-98 - European Macroseismic Scale

The European Macroseismic Scale (EMS-98) is the basis for assigning seismic intensities in European countries. The European Macroseismic Scale has been most recently updated in 1998 and is referred to as EMS

The history of the EMS began in 1988 w…
FID GEO - Specialised Information Service Geosciences

The Specialised Information Service for Geosciences (FID GEO - Fachinformationsdienst Geowissenschaften) is an information service of the GFZ Helmholtz Centre for Geosciences in Potsdam (GFZ) and the Goettingen State and University Library. Funded b…
GEOFON DC - GFZ Seismological Data Archive

GEOFON operates the GFZ Seismological Data Archive, which facilitates access to data from the GEOFON stations, from GIPP passive experiments and from plate boundary observatories, as well as from many partner networks/institutions, providing a perma…
GEOFON Earthquake Explorer

The GEOFON Earthquake Explorer is a world map of global seismicity located automatically using the global virtual seismic network. Detailed information including hypocenter coordinates and a location map are displayed for the last major earthquake.
GEOFON Eqinfo - GEOFON Global Earthquake Monitoring System

All real time data streams from GEOFON stations as well as around 900 additional real-time stations from international partners are used to determine rapid automatic location estimates for all globally recorded earthquakes and most regional ones. Th…
GEOMAGIA50 – Paleomagnetic and Chronological Data for the Past 50 Ka

The GEOMAGIA50 database is an international collaboration to provide easy access to published archeomagnetic/volcanic and sediment paleomagnetic and chronological data for the past 50,000 years. GEOMAGIA50 has been funded by the US National Science …
GFZ Data Services

GFZ Data Services is a repository for research data and scientific software across the Earth System Sciences, hosted at GFZ. The curated data are archived, persistently accessible and published with digital object identifier (DOI). They range from l…
GHFDB - Global Heat Flow Database

The GFZ supports the work of the International Heat Flow Commission (IHFC) of the IASPEI by providing thematic and technical support for the global heat flow database. We develop a new research data infrastructure for the IHFC Global Heat Flow Datab…
GIPP Experiment and Data Archive

The GIPP Experiment and Data Archive is the platform for long-term archiving of geophysical experiment data and its supply to users. It contains metadata of all experiments supported by the "Geophysical Equipment Pool Potsdam" (GIPP) as well as data…
GNSS Operational Data Centre (ODC)

With the setup of global and regional GNSS networks and the IGS Analysis Centre in the early 1990s, GFZ has been implemented an „Operational Data Centre (ODC)” to handle the huge amount of data.

The ODC serves the preparation and quality manageme…
GSHAP - Global Seismic Hazard Map Online

The GSHAP project was one of the global initiatives within the framework of the UN International Decade for Natural Disaster Reduction (IDNDR), declared by the United Nations General Assembly for the 1990s. Around 190 geoscientists from all continen…
Geomagnetic Hpo Index

The geomagnetic Hpo index is a Kp-like index with a time resolution of half an hour, called Hp30, and one hour, called Hp60. besides that, the Hpo index is not capped at 9 like Kp, but is an open ended index that describes the strongest geomagnetic …
Geomagnetic Kp index

The Indices of Global Geomagnetic Activity is a service contributing to the International Service of Geomagnetic Indices (ISGI) of the International Association of Geomagnetism and Aeronomy (IAGA) provided by the GFZ Helmholtz Centre for Geosciences…
GravIS - Gravity Information Service

The Gravity Information Service (GravIS) visualizes and describes Level-3 products based on the most recent GRACE and GRACE-FO gravity field release from GFZ. The products presented at GravIS are available for download at GFZ's Information System a…
IAG Services - Services of the International Association of Geodesy (IAG Services)

The International Association of Geodesy (IAG) is the scientific organization in the field of geodesy. It promotes scientific cooperation and research in geodesy on a global scale and contributes to it through its various research bodies. It is a me…
ICDP International Continental Scientific Drilling Programme

The International Continental Scientific Drilling Program (ICDP) is a multinational program to further and fund geosciences in the field of Continental Scientific Drilling. Scientific drilling is a critical tool in understanding of Earth processes a…
ICGEM - International Centre for Global Earth Models

The determination of Earth’s global gravity field is one of the main tasks of geodesy: it serves as a reference for geodesy itself and provides essential information about the Earth, its interior and its fluid envelope for all geosciences. Thus, it …
IDS - International Doris Service

The Doris (Doppler Orbitography and Radiopositioning Integrated by Satellite) system is a French satellite system used for precise orbit and positioning determination. It is based on the Doppler Effect principle consisting of a terrestrial beacon ne…
IERS - International Earth Rotation and Reference Systems Service

The International Earth Rotation and Reference Systems Service (IERS) was established in 1987 by the International Astronomical Union and the International Union of Geodesy and Geophysics. The primary objectives of the IERS are to serve the astronom…
IGETS Database - Database of the International Geodynamics and Earth Tide Service

The International Geodynamics and Earth Tide Service (IGETS) is one of five services coordinated by the International Gravity Field Service (IFGS) of the International Association of Geodesy (IAG). The main objective of IGETS is to monitor temporal …
IGFS - International Gravity Field Service

IGFS is a unified “umbrella” IAG service, which: (i) Coordinates collection, validation, archiving and dissemination of gravity field related data (ii) Coordinates courses, information materials and general public outreach relating to the earth’s gr…
IGS - International GNSS Service

The International GNSS Service (IGS) is a service of the International Association of Geodesy (IAG). It provides Global Navigation Satellite Systems (GNSS) data and products with highest quality to the scientific community and beyond.

GFZ contri…
IGS Analysis Center

As one of the analysis centers of the International GNSS Service (IGS), we process thousands of GNSS observations daily to derive precise station coordinates, satellite orbits, satellite clock corrections and Earth rotation parameters. In line with …
IGS Reprocessing Campaigns

After the successful first full reprocessing of the International GNSS Service (IGS), the Analysis Centers (ACs) of the IGS started the second reprocessing in 2010. The complete history of GPS data collected by the global IGS network since 1994 was …
IGSN International Generic Sample Number

The International Generic Sample Number (IGSN) is a globally unique and persistent identifier (PID) for unambiguous identification of physical samples and collections with discovery function in the internet. IGSNs are citable in scholarly literature…
ILRS - International Laser Ranging Service

The International Laser Ranging Service (ILRS) was established as one of the IAG measurement services in 1998, with a charter to organize and coordinate world-wide Satellite Laser Ranging (SLR) and Lunar Laser Ranging (LLR) activities to support pro…
INTERMAGNET

INTERMAGNET is an international program to provide quality controlled geomagnetic observatory data through a website and an ftp-server. Both archive and near-real time data are provided. The INTERMAGNET observatories in Niemegk, Wingst, Tristan da C…
IVS - International VLBI Service for Geodesy and Astronomy

Very Long Baseline Interferometry (VLBI) is a highly accurate technique, used since the 1970s in geodesy that has delivered groundbreaking scientific discoveries. This technique allows scientists to measure global distances with millimeter accuracy;…
MGEX - Analysis Center of the Multi-GNSS Experiment

The Multi GNSS Experiment (MGEX) was initiated by the IGS in 2012. In MGEX all available signals of the new GNSS satellites are analysed. Currently, seven IGS analysis centers generate consistent and precise orbits and clock corrections of the new s…
OSG ICDP | Operational Support Group of the International Continental Scientific Drilling Program

The Operational Support Group of the International Continental Scientific Drilling Program, ICDP, situated at GFZ, provides downhole logging services and access to utilize the ICDP instrument pool for PIs of successful ICDP proposals. ICDP is a prop…
Space Weather Services

Conditions on the Sun and in the solar wind, magnetosphere, ionosphere and thermosphere that can influence the performance and reliability of space-borne and ground-based technological systems and can affect human life. GFZ contributes to the develo…
TIGA - Processing Center of the Tide Gauge Benchmark Monitoring Working Group

Being a modern geodetic measuring method, GNSS (Global Navigation Satellite Systems) has reached an important role in geosciences. Within the scope of the Tide Gauge Benchmark Monitoring Working Group (TIGA-WG) of the IGS, GFZ analyses and reprocess…
WSM - World Stress Map Project

The World Stress Map (WSM) is a global compilation of information on the crustal present-day stress field maintained since 2009 at the GFZ Helmholtz Centre for Geosciences (Section 2.6 Seismic Hazard and Risk Dynamics). It is a collaborative project…
WSM CASMO - Create A Stress Map online

CASMO is the online interface to produce user-specific stress maps from the WSM database release along with your own stress data records. The stress maps will be provided for download in high quality (postscript, jpg, png or pdf file format) as a co…