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# Documentation: nshmp-haz
***nshmp-haz*** is a USGS developed software stack that supports probabilistic seismic hazard
(PSHA) and related analyses. It is maintained by the National Seismic Hazard Model Project
([NSHMP](https://earthquake.usgs.gov/hazards/)) within the U.S. Geological Survey's
([USGS](https://www.usgs.gov)) earthquake hazards program ([EHP](http://earthquake.usgs.gov)).
*nshmp-haz* supports high performance seismic hazard calculations required to generate detailed
maps over large areas and supports a variety of USGS web services and applications related to
seismic hazards research and the dissemination of hazard data. This documentation explains how
to use *nshmp-haz* as well as underlying model implementation details.
## Table of Contents
* [About the NSHMP](pages/about-the-nshmp)
* [Building & Running](pages/building-&-running)
* [Developer Basics](pages/developer-basics)
* [Calculation Configuration](pages/calculation-configuration)
* [Site Specification](pages/site-specification)
* [Examples](/ghsc/nshmp/nshmp-haz/-/tree/master/etc/examples)
* [Hazard Model](pages/hazard-model)
* [Model Structure](pages/model-structure)
* [Model Files](pages/model-files)
* [Source Types](pages/source-types)
* [Magnitude Frequency Distributions (MFDs)](pages/magnitude-frequency-distributions)
* [Rupture Scaling Relations](pages/rupture-scaling-relations)
* [Ground Motion Models (GMMs)](pages/ground-motion-models)
* [USGS Models](pages/usgs-models)
* [Model Editions](pages/model-editions)
* [Logic Trees & Uncertainty](pages/logic-trees-&-uncertainty)
* [nshmp-lib](/ghsc/nshmp/nshmp-lib): USGS hazard modeling library
* [Probabilistic Seismic Hazard Analysis, a Primer
[PDF]](http://www.opensha.org/sites/opensha.org/files/PSHA_Primer_v2_0.pdf)
by Edward Field
* [An Introduction to Probabilistic Seismic Hazard Analysis
[PDF]](http://web.stanford.edu/~bakerjw/Publications/Baker_(2015)_Intro_to_PSHA.pdf)
by Jack Baker
* [License](../LICENSE.md)