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Data Sharing & Access

EPOS-NL facilitates global discovery of and open access to solid Earth science data from the Netherlands, with a focus on seismological and laboratory (experimental rock physics, crust/mantle analogue modelling, rock microstructures) data.

  • Laboratory data
  • Seismological data
  • Groningen data
  • Data centers
  • Other data
  • PhD theses

Laboratory data

Types of data

Different types of laboratory data are collected at different EPOS-NL facilities:

Data type
EPOS-NL facility
Rock physics data
2D & 3D imaging data
Microchemical mapping
Analogue modelling data

Access data

Data can currently be accessed in the 4TU.ResearchData and Yoda data repositories. In the near future, metadata from open EPOS-NL laboratory datasets will be collectively searchable in the EPOS Multi-Scale Laboratories data catalog

Share data

EPOS-NL laboratory data is published in the institutional repositories of TU Delft (4TU.Researchdata) and Utrecht University (Yoda), then the metadata describing the data will be automatically included in the Multi-Scale Laboratories data catalog for collective discoverability from a single access point. 

To share data collected at an EPOS-NL laboratory facility, please follow the instructions for publishing data at the appropriate institution:

Seismological data

Types of data

Seismological data collected as part of EPOS-NL includes raw waveform data (miniSEED) together with station and instrumentation metadata (StationXML).

SEED specification: 

StationXML specification: 

Access data

Waveform data and station metadata can be accessed through the European Integrated Data Archive (EIDA)’s graphical web interface or web services.  

ORFEUS data center, where EPOS-NL seismological data is archived, also provides additional services for waveform data such as data quality tools and visualizations of real time waveforms. 

For supporting instructions on how to access data at the ORFEUS Data Center, click here.

Share data

To share seismological data collected using the EPOS-NL infrastructure, please contact Reinoud Sleeman (reinoud.sleeman at for further information.

Groningen data

Data description and access

The Groningen gas field in the Netherlands is known for its induced subsidence and seismicity caused by gas production. To facilitate ongoing research into these effects (e.g. by the DeepNL program), EPOS-NL disseminates the following key data and model pertaining to the Groningen field:

Data type
Provided by
Accessible at
Seismological data
ORFEUS Data Center (KNMI)
Seismological data
ORFEUS Data Center (KNMI)
Groningen geological model
Yoda (UU)
Distributed Strain Sensing (DSS) data
Yoda (UU)
Reservoir core photographs
Yoda (UU)
In-situ pressure database Netherlands
EBN Data Centre

For supporting instructions on how to access the seismological data at the ORFEUS Data Center please click here

In 2021, 60 TB of data from the recently expanded seismological network in the Groningen field will be added to the ORFEUS Data Center. These data are provided by NAM and will complement the existing datasets at ORFEUS Data Center.

Data centers

EPOS-NL works with the data centers of its partner institutions to make geologic data openly available, as well as FAIR (Findable, Accessible, Interoperable, and Reusable).

Yoda Geoscience

YourData (Yoda) Geoscience is a repository for data from all geoscience disciplines, with a focus on experimental rock physics, analogue modelling, geochemistry, paleomagnetism, microstructural and geological data. Yoda Geoscience is part of the larger Yoda data center, built and maintained by Utrecht University. Openly published data are currently being made findable in different international data catalogs, like the EPOS Multi-Scale Laboratories data catalog


4TU.ResearchData is an international data repository with a focus on data from science, engineering and technology. It holds the Data Seal of Approval and is run by the technical universities of Eindhoven, Delft and Twente via the 4TU.ResearchData Federation. Archiving, long-term preservation, sharing of research datasets, and resources for making data FAIR are some of the services offered by 4TU.ResearchData. EPOS-NL is working with 4TU.ResearchData to ensure that laboratory metadata from TU Delft published in 4TU.ResearchData will be discoverable via the EPOS Multi-Scale Laboratories data catalog.  

ORFEUS Data center

The ORFEUS data center collects, archives and provides public access to seismological data (waveforms + metadata) from about 30 European seismic networks, and is the infrastructure for sharing seismic waveform data in EPOS’s Seismology Thematic Core Service. The ORFEUS Data Center is an important node in the European Integrated Data Archive (EIDA) – a federation of European and global data centers, aimed at sustainable storage and open access of seismological data.

Other data

There are several other sources of data in the EPOS-NL network.

Paleomagnetic data

The most comprehensive data portal to international paleomagnetic data is the MagIC web portal. Still, paleomagnetic data users may also be interested in UU-run paleomagnetic database, or in web-apps to calculate the paleoatitude or paleointensity of a given location on the world.

Seismological tomography mapping of the Earth’s crust and upper mantle

The first complete mapping of subducted plates in the Earth’s mantle and their geological interpretation is provided in the atlas of the underworld

Doctoral (PhD) theses published in the Netherlands can generally be found on NARCIS. Alternatively, the below links can help finding the thesis you’re looking for:

Utrecht University theses

  • Utrecht Studies in Earth Sciences (USES) series
  • Non-USES theses (Narcis)
  • If you’re looking specifically for older theses of the Geologica Ultraiecticana series, it can help adding “Geologica Ultraiecticana” to the search terms on Narcis

Technical University of Delft theses