Screenshot: Get Kids into Survey

Geodesy without math equations: Is that possible?

December 7, 2022

A goal of mine has always been to get individuals interested in obtaining a better understanding of geodesy. I hope this newsletter helps whet the appetite of some individuals to obtain a better knowledge of geodesy.

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This article is tagged with geodesy, geodetic surveying, GNSS equipment, NGS, online learning, plate tectonics, surveying, total stations, UNAVCO and posted in Opinions, Survey

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Photo: NGS

The effects of geoid changes in NGS’s new, modernized 2022 NSRS

June 1, 2022

The new, modernized NSRS has a time-dependent component. This includes the geoid model.

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This article is tagged with Alaska, earthquake, GeMS, geoid change, geoid model, Geoid Monitoring Service, geophysical drivers, Kevin Ahlgren, modernized NSRS, Mount St. Helens, NGS, NOAA, NOAA CORS Network, NOS NGS 64 Report, NSRS, Oklahoma, Ring of Fire, time-dependent, xGEOID20 tool and posted in Opinions, Survey

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Image: Dave Zilkoski

The effects of vertical movement on NGS’s modernized 2022 NSRS

April 6, 2022

This newsletter will address estimates of vertical movement that will have to be accounted for in the new, modernized National Spatial Reference System.

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This article is tagged with CORS, ITRF2014, modernized NSRS, NAPGD2022, National Geodetic Survey, National Spatial Reference System, NGS, NOAA CORS Network and posted in Opinions, Survey

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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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Experimental Geoid Models 2020 (xGEOID20). (Image: NGS)

NGS releases annual experimental geoid models and gravity interpolation tools

February 3, 2021

My last column highlighted an ArcGIS web application that incorporates various datasets and data layers to assist surveyors […]

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This article is tagged with David B. Zilkoski, experimental geoid models, gravity interpolation tool, National Geodetic Survey, NGS, Survey Scene, xGeoid20 and posted in Opinions, Survey

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Photo: Trimble

The year 2020 and the surveyor: What we learned

January 6, 2021

If there were ever a time to sit back and reflect on things that have happened in the […]

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This article is tagged with COVID-19, GNSS receiver, GNSS technology, Leica, Ligado, National Geodetic Survey, NGS, survey, Tim Burch, Topcon, Trimble and posted in Opinions, Survey

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Source: Esri ArcGIS GNSS Leveling Web Application

ArcGIS web app incorporates datasets, NGS data layers for surveyors

December 2, 2020

My last column described a new National Geodetic Survey (NGS) webtool for obtaining geodetic information about a passive […]

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This article is tagged with ArcGIS, David B. Zilkoski, Esri ArcGIS, GEOID18, GNSS Leveling Web Application, National Geodetic Survey, NGS, NGS GPS on Bench Marks, orthometric heights, survey and posted in Opinions, Survey

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