Using a Superconducting Gravimeter in Support of Absolute Gravity Campaigning — A Feasibility Study

Hans-Georg Scherneck , Marcin Rajner

Abstract

Preparing for joint analysis of absolute gravity (AG) campaigns, this report investigates whether a stationary superconducting gravimeter (SCG) can provide a long-term stable measurement of sitedependent perturbations that help in reduction to the local value of little-g and its secular rate of change. The crucial element concerns the discrimination of instrumental drift components from trends of physical origin, where biasses in the inferred long-term drift rate may offset the rate that the reduced AG campaigns deliver. Thus, the main objective is to include a set of gravity models and proxy series as complete as possible in the SCG analysis. Findings indicate consistency for ݃ሶ in the drift model at the 0.5 nm/s2 /yr level using observations at Onsala Space Observatory from 2009 to 2017. In pursuit of the overriding objective to improve the accuracy of secular rates of gravity owed to Glacial Isostatic Adjustment, our approach may even put numbers on a range of long-term changes due to atmosphere, hydrology, and non-tidal ocean loading, namely the rate biasses reported here.
Author Hans-Georg Scherneck
Hans-Georg Scherneck,,
-
, Marcin Rajner (FGC / CGGA) - [Chalmers University of Technology]
Marcin Rajner,,
- Chair of Geodesy and Geodetic Astronomy
-
Journal seriesGeophysica, ISSN 0367-4231, e-ISSN 2324-0741
Issue year2019
Vol54
No1
Pages117-135
Publication size in sheets0.9
Keywords in English Gravity change, Glacial Isostatic Rebound, Superconducting Gravimeter, absolute gravimeter
ASJC Classification1908 Geophysics
DOIDOI:10.31223/osf.io/yxvjc
URL https://eartharxiv.org/yxvjc/
Internal identifier55/2019
Languageen angielski
Additional file
2019_Oświadczenie_Rajner_Using_a_Superconducting_55.pdf 285.75 KB
Score (nominal)20
Score sourcejournalList
ScoreMinisterial score = 20.0, 17-08-2020, ArticleFromJournal
Publication indicators Scopus Citations = 0; GS Citations = 1.0; Scopus SNIP (Source Normalised Impact per Paper): 2018 = 0.367
Citation count*1 (2020-09-16)
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* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.
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