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1. yourwiseadvices.com › does-google-earth-use-nad-27Does Google Earth use NAD 27 or NAD 83? – Wise-Advices

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   Jan 13, 2020 · Does Google Earth use NAD 27 or NAD 83? For FM and LPFM radio stations, the FCC uses an older coordinate system called NAD27 whereas most coordinates including Google Maps coordinates, use the newer NAD83 system.

2. www.ngs.noaa.gov › datums › faqFrequently Asked Questions: Datums | Datums | National ...

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   Jul 12, 2018 · How do the horizontal datums differ? Which should I use? The NAD 27 was based on the Clarke Ellipsoid of 1866 and the NAD 83 is based on the Geodetic Reference System of 1980.

3. People also ask

   What is the difference between NAD 83 and NAD 27?

   • The NAD 27 was based on the Clarke Ellipsoid of 1866 and the NAD 83 is based on the Geodetic Reference System of 1980. The NAD 27 was computed with a single survey point, MEADES RANCH in Kansas, as the datum point, while the NAD 83 was computed as a geocentric reference system with no datum point.

   Frequently Asked Questions: Datums | Datums | National Geodetic Survey

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   Is Google Maps based on NAD 83 or WGS 84?

   • Most maps are based on NAD 83, developed by NGS. Google Maps and GPS rely instead on WGS 84, maintained by a parallel military agency, which, thanks to Edward Snowden, we now know has a considerably larger budget. The civilian one is optimized for surveying within North America; the military one sacrifices domestic precision for global coverage.

   What Happens to Google Maps When Tectonic Plates Move?

   blogs.scientificamerican.com/critical-opalescence/what-happens-to-google-maps-when-tectonic-plates-move/

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   Where can I find the coordinates for NAD 27 & 83?

   • Horizontal coordinates for most points in NAD 27 exist in NAD 83 and may be obtained relatively inexpensively from NGS via the World Wide Web or NGS' Information Services Branch. If the coordinate data are not held by NGS, two possibilities exist.

   National Geodetic Survey - Frequently Asked Questions

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   Why is NAD 83 not tying coordinates to one plate?

   • The effect of not tying coordinates to one plate is that surveyed positions, and the maps built upon them, change over time. In contrast, NAD 83 sits atop the North American plate like a fishnet laid out on the deck of a boat. As the plate moves, so does the datum. Other regions of the world likewise have their own local datums.

   What Happens to Google Maps When Tectonic Plates Move?

   blogs.scientificamerican.com/critical-opalescence/what-happens-to-google-maps-when-tectonic-plates-move/

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4. www.ncesc.com › geographic-faq › what-is-theWhat is the difference between NAD 27 and 83? - Geographic ...

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   5 days ago · What is the difference between NAD 27 and 83? NAD 27 and NAD 83 are both geodetic datums used for referencing locations on the Earth’s surface. However, there are several key differences between them: 1. What is NAD 27 based on? NAD 27 was based on the Clarke Ellipsoid of 1866, which served as the … What is the difference between NAD 27 and 83?

5. www.ncesc.com › geographic-pedia › what-is-theWhat is the difference between WGS84 and NAD 83?

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   May 21, 2024 · While WGS84 provides a global reference system for GPS and navigation, NAD83 is specifically designed for tracking the movement of the North American plate. Both datums have their unique characteristics and applications, and conversions between the two are possible with the right tools and software.

6. www.ncesc.com › geographic-faq › what-is-theWhat is the difference between NAD 83 and NAD 27?

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   Apr 26, 2024 · The North American Datum of 1983 (NAD 83) and the North American Datum of 1927 (NAD 27) are both horizontal datums used in geodetic coordinate systems for mapping and surveying in North America. Here are the answers to some commonly asked questions about the differences …

7. beta.ngs.noaa.gov › datums › faqNational Geodetic Survey - Frequently Asked Questions

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   The NAD 27 was based on the Clarke Ellipsoid of 1866 and the NAD 83 is based on the Geodetic Reference System of 1980. The NAD 27 was computed with a single survey point, MEADES RANCH in Kansas, as the datum point, while the NAD 83 was computed as a geocentric reference system with no datum point.

8. blogs.scientificamerican.com › criticalWhat Happens to Google Maps When Tectonic Plates Move?

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   Nov 11, 2013 · This is where plate tectonics can make itself felt. Confusingly, the U.S. uses two separate datums. Most maps are based on NAD 83, developed by NGS. Google Maps and GPS rely instead on WGS 84...