Ground motion data are commonly stored in a tabular data file called Flatfile. In eGSIM, flatfiles are used to compare observed or synthetic ground motions with the model predictions implemented in OpenQuake. To do so, each flatfile record must include the observed ground motions (intensity measures such as PGA) and the input data (e.g., magnitude) required by the models.
As such, the data to provide in a flatfile is use-case dependent. Here you can obtain detailed information about the flatfile fields that should be provided to work with your selection of models and intensity measures. Once compiled, flatfiles can be uploaded in HDF (recommended) or CSV format and used throughout the application (Data visual inspection and Model-to-data comparison)
| mag | rhypo | PGA | SA(0.1) | ⋯ |
| ⋯ | ⋯ | ⋯ | ⋯ | ⋯ |
| ⋯ | ⋯ | ⋯ | ⋯ | ⋯ |
| ⋯ | ⋯ | ⋯ | ⋯ | ⋯ |
| Field (Column) | Type | Data type | Description |
Citation
If you use the data produced by the underlying API (including data downloadable through this web portal), please cite eGSIM as:
Zaccarelli, Riccardo; Weatherill, Graeme (2020): eGSIM - a Python library and web application to select and test Ground Motion models. GFZ Data Services. https://doi.org/10.5880/GFZ.2.6.2023.007
License
The content of this site, as well as all output data produced by
the underlying API (including data downloadable through this web portal) is licensed under
CC BY 4.0
This page code samples, as well as eGSIM source code is licensed under the
GNU Affero General Public License v.3.0
References
The references of the Ground-shaking intensity models (Gsim) available in eGSIM can be found in the Python documentation of the OpenQuake (Disclaimer: the OpenQuake version at the link might not match exactly the version used in eGSIM, and hence the list of available models might slightly differ)
eGSIM uses the following input data (click on the links below for details such as e.g., how to cite their data alongside eGSIM in your work):
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Seismic Hazard Harmonization in Europe (SHARE)
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The 2020 European Seismic Hazard Model
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Engineering strong-motion flat-file 2018
(All links provided in this page open in a new tab/window when clicked)
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Dr. Riccardo Zaccarelli
Technical Realization and support
Responsible for the technical implementation is Dr. Riccardo Zaccarelli
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eGSIM
a web service to explore, select and test Ground-Shaking Intensity Models
eGSIM is a web application programming interface (API) where users can perform queries in their code via configurable URLs in order to compute and retrieve model predictions of ground motions from either observed or hypothetical earthquake scenarios.
Welcome to eGSIM web portal, a graphical user interface to interact with the API:
Get ground motion model predictions from hypothetical earthquake scenarios
Find out how to compile, inspect and upload observed (or synthetic) ground motion data
Get residuals between ground motion model predictions and observed (or synthetic) ground motion data
