# Height Modernization

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> Markdown URL: https://mediated.wiki/source/Height_Modernization.md
> Source: https://en.wikipedia.org/wiki/Height_Modernization
> Source revision: 1295779125
> License: Creative Commons Attribution-ShareAlike 4.0 International (https://creativecommons.org/licenses/by-sa/4.0/)

[[File:Javad Positioning System antenna atop the Washington Monument.jpg|thumb|A device placed on top of the [Washington Monument](/source/Washington_Monument) to measure the height as part of a Height Modernization project in 1999<ref>{{cite web|title=Washington Monument GPS Height Modernization Project August 17–19, 1999|url=http://www.ngs.noaa.gov/surveys/ngs/wm1999/|website=National Geodetic Survey|accessdate=30 November 2015}}</ref>]]
'''Height Modernization''' is the name of a series of state-by-state programs recently begun by the United States' [National Geodetic Survey](/source/National_Geodetic_Survey), a division of the [National Oceanic and Atmospheric Administration](/source/National_Oceanic_and_Atmospheric_Administration). The goal of each state program is to place [GPS](/source/global_positioning_satellite) base stations at various locations within each participating state to measure topographic changes in the directions of [latitude](/source/latitude) and [longitude](/source/longitude) caused by [subsidence](/source/subsidence) or [earthquakes](/source/earthquakes), as well as to measure changes in height (elevation).
==References==
{{Reflist}}
* [https://agic.az.gov/agic/ Arizona Height Modernization – Arizona Geographic Information Council] 
* [http://tsrc.tamucc.edu/TSRC/HomePage/ Texas Height Modernization – Texas A&M University – Corpus Christi]

Category:Geodesy

{{geodesy-stub}}

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Adapted from the Wikipedia article [Height Modernization](https://en.wikipedia.org/wiki/Height_Modernization) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/Height_Modernization?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.