Estimation of Depth to Salt Domes from Normalized Full Gradient of Gravity Anomaly and Examples from the USA and Denmark

We present an estimation of depth of anomalous bodies using normalized full gradient （NFG） of gravity anomaly. Maxima in the NFG map can locate the bodies and indicate their depth. Model calculation using a sphere and application of the NFG method to gravity anomalies over salt domes in the USA and...

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Bibliographic Details
Published inJournal of earth science (Wuhan, China) Vol. 20; no. 6; pp. 1012 - 1016
Main Authors Aghajani, Hamid, Moradzadeh, Ali, Zeng, Hualin
Format Journal Article
LanguageEnglish
Published China University of Geosciences (Wuhan) China University of Geosciences (Wuhan) 01.12.2009
Springer Nature B.V
Subjects
Biogeosciences
Earth and Environmental Science
Earth science
Earth Sciences
Fourier analysis
Geochemistry
Geology
Geophysics
Geotechnical Engineering & Applied Earth Sciences
Gravity
NFG
Salt
丹麦
傅里叶级数
深度估计
盐丘
美国
重力异常
重力梯度
anomalous body
normalized full gradient
Fourier series
depth estimation
gravity anomaly
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Summary:We present an estimation of depth of anomalous bodies using normalized full gradient （NFG） of gravity anomaly. Maxima in the NFG map can locate the bodies and indicate their depth. Model calculation using a sphere and application of the NFG method to gravity anomalies over salt domes in the USA and Denmark shows effectiveness of the method. However, the accuracy of depth estimation strongly depends on the number of term N in the Fourier series used to calculate the NFG. An optimum N for the calculation can be given from a test.
Bibliography:V448.221
P631.1
depth estimation, anomalous body, normalized full gradient, gravity anomaly, Fourier series.
42-1788/P
ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:1674-487X
1867-111X
DOI:10.1007/s12583-009-0088-y