North American Regional Comparison of Absolute Gravimeters (NACAG18)

van Westrum, Derek

doi:10.25923/b7sk-6741

i

North American Regional Comparison of Absolute Gravimeters (NACAG18)

2019
By van Westrum, Derek
Series: NOAA technical memorandum NOS NGS 80

Details

Personal Author:

van Westrum, Derek
Corporate Authors:

National Geodetic Survey (U.S.)
Conference Authors:

North American Comparison of Absolute Gravimeters (2018)
NOAA Program & Office:

NOS (National Ocean Service) ; NGS (Office of National Geodetic Survey)
Description:

A North American Comparison of Absolute Gravimeters (NACAG18) took place at the Table Mountain Geophysical Observatory (TMGO) near Boulder, Colorado between September 18 and September 21, 2018. While not affiliated with the Consultative Committee on Mass and Related Quantities (CCM), the 2018 comparison was organized following the procedures of the 2016 comparison at TMGO: SIM.M.G-K1, and the technical protocol (again, based on the 2016 comparison) was approved by all participants. The list of participants and a description of the site (including vertical gravity gradients, observed tidal parameters, and superconducting gravimeter signal observed during the comparison) are presented, followed by a discussion of the analysis. The results of the data analysis, and the degrees of equivalence (DoE) of the gravimeters are also presented. For the final solution of the Reference Values (RVs), the contributions of absolute gravity data inconsistent at the 95% confidence level are investigated. Overall, the results and uncertainties indicate an excellent agreement between the gravimeters, with a standard deviation of the gravimeters’ biases better than 1.4 µGal when all instruments are included, and 0.4 µGal when an outlier is removed.
Keywords:

Congresses Gravimeters (Geophysical Instruments) Gravimeters (Geophysical Instruments)
Series:

NOAA technical memorandum NOS NGS 80
DOI:

https://doi.org/10.25923/b7sk-6741
Format:

PDF
Document Type:

Technical Memorandum
License:

https://creativecommons.org/publicdomain/zero/1.0/
Rights Information:

CC0 Public Domain
Compliance:

Submitted
Main Document Checksum:

urn:sha-512:e042a8a0d5c3a5572ff47bf01401e014962e5183615df50beaff8bc19fd5322c92e81964d8bddce8c4ea4c7dad3adafc4f562f1c9d9ef1327d49c017f49e8408
Download URL:

https://repository.library.noaa.gov/view/noaa/56805/noaa_56805_DS1.pdf
File Type:

[PDF - 1.80 MB ]

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