NDLI: Gravity disturbances in regions of negative heights: A reference quasi-ellipsoid approach

Content Provider	Springer Nature Link
Author	Vajda, P. Ellmann, A. Meurers, B. Vaníček, P. vák, P. Tenzer, R.
Copyright Year	2008
Abstract	Compilation of the bathymetrically and topographically corrected gravity disturbance, the so called BT disturbance, for the purpose of gravity interpretation/inversion, is investigated from the numerical point of view, with special emphasis on regions of negative heights. In regions of negative ellipsoidal (geodetic) heights, such as the Dead Sea region onshore or offshore areas of negative geoidal heights, two issues complicate the compilation and subsequently the inversion of the BT disturbance. The first is associated with the evaluation of normal gravity below the surface of the reference ellipsoid (RE). The latter is tied to the legitimacy of the harmonic continuation of the BT disturbance in these regions. These two issues are proposed to be resolved by the so called reference quasi-ellipsoid (RQE) approach. New bathymetric and topographic corrections are derived based on the RQE and the inverse problem is formulated based on the RQE. The RQE approach enables the computation of normal gravity by means of the international gravity formula, and makes the harmonic continuation in the regions of negative heights of gravity stations legitimate. The gravimetric inversion is then transformed from the RQE approach back to the RE approach, following the now legitimate harmonic upward continuation of the gravity data to stations on or above the RE. Stripping, the removal of an effect of a known density contrast, is considered in the context of the RQE approach. A numerical case study is presented for the RQE approach in a region of NW Canada.
Starting Page	35
Ending Page	52
Page Count	18
File Format	PDF
ISSN	00393169
Journal	Studia Geophysica et Geodaetica
Volume Number	52
Issue Number	1
e-ISSN	15731626
Language	English
Publisher	Springer US
Publisher Date	2008-04-30
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	BT gravity disturbance RQE normal gravity harmonic continuation inverse problem interpretation Meteorology/Climatology Structural Geology Geophysics/Geodesy
Content Type	Text
Resource Type	Article
Subject	Geochemistry and Petrology Geophysics

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Global ellipsoid-referenced topographic, bathymetric and stripping corrections to gravity disturbance

Numerical Studies on the Harmonic Downward Continuation of Band-Limited Airborne Gravity

A new physical foundation for anomalous gravity

Ellipsoidal Neumann geodetic boundary-value problem based on surface gravity disturbances: case study of Iran

Detection of Local Geoid Deformations by Gravity Disturbances from GPS/Gravimetric Observations

Accuracy Estimates of Normal Heights Computed at GPS Sites

Accuracy of Normal Heights Determined Using Improved Geopotential Models

Transformation of the Geodetic Horizontal Control to Another Reference Ellipsoid

Conditionality of inverse solutions to discretised integral equations in geoid modelling from local gravity data

Gravity disturbances in regions of negative heights: A reference quasi-ellipsoid approach

Similar Documents

Global ellipsoid-referenced topographic, bathymetric and stripping corrections to gravity disturbance

Numerical Studies on the Harmonic Downward Continuation of Band-Limited Airborne Gravity

A new physical foundation for anomalous gravity

Ellipsoidal Neumann geodetic boundary-value problem based on surface gravity disturbances: case study of Iran

Detection of Local Geoid Deformations by Gravity Disturbances from GPS/Gravimetric Observations

Accuracy Estimates of Normal Heights Computed at GPS Sites

Accuracy of Normal Heights Determined Using Improved Geopotential Models

Transformation of the Geodetic Horizontal Control to Another Reference Ellipsoid

Conditionality of inverse solutions to discretised integral equations in geoid modelling from local gravity data

Gravity disturbances in regions of negative heights: A reference quasi-ellipsoid approach