NGS Regional Geodetic Advisors. (Image: NGS Website)

Estimating heights with subsidence changes using NGS data and tools

June 2, 2021

This column details the potential effects of crustal movement on published heights in various regions of the United […]

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This article is tagged with crustal deformation, GNSS-derived orthometric heights, National Geodetic Service, NGS, NSRS, orthometric height and posted in Opinions, Survey

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Figure 10 from NOAA Technical Report NOS NGS 67 — Diagram of fictional case study location. The arrows correspond to hypothetical rates of ground subsidence. (Image: NGS)

NGS revises NOAA report on working in the modernized NSRS

April 7, 2021

The National Geodetic Survey (NGS) has revised an important technical document on the modernized National Spatial Reference System […]

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This article is tagged with David B. Zilkoski, floodplain, National Spatial Reference System, NGS, NSRS, Texas, U.S. National Geodetic Survey and posted in Opinions, Survey

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Figure 2 – Approximate Change Between NAPGD2022 and NGVD 29 Using GPS on BMs Data (units = cm). (Image: National Geodetic Survey)

NGS releases modernized National Spatial Reference System updates

August 5, 2020

The National Geodetic Survey (NGS) recently announced two new items related to the modernized National Spatial Reference System […]

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This article is tagged with David B. Zilkoski, modernized NSRS, National Geodetic Survey, National Spatial Reference System, NGS, NSRS and posted in Opinions, Survey

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Source: GPS World

Surveyors’ coordinate systems for 2022 and beyond

May 3, 2017

Time. Ask anyone what time means to them, and they will give you a different answer. Benjamin Franklin […]

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This article is tagged with datum, National Spatial Reference System, NGS, NSRS, survey, surveyor and posted in Opinions, Survey

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