To: “Direct Interpretation of Two‐Dimensional Structural Faults from Gravity Data” (by Mrinal K. Paul, Sukumar Datta and Buddhadeb Banerjee, GEOPHYSICS, October 1966, p. 940–948)

Geophysics ◽  
1974 ◽  
Vol 39 (3) ◽  
pp. 364-364
Keyword(s):  
Gravity Data ◽  
Two Dimensional ◽  
Direct Interpretation

In the Discussion on “Direct Interpretation of Two‐Dimensional Structural Faults from Gravity Data” (by Mrinal K. Paul, Sukumar Datta and Buddhadeb Banerjee, Geophysics, October 1966, p. 940–948) by S. K. Choudhury and R. Amaravadi, Geophysics, v. 38, no. 5, p. 981, the last term of the equation should be corrected as: [Formula: see text]The term 9/4 in the numerator was incorrectly printed as 2/4.

DIRECT INTERPRETATION OF TWO‐DIMENSIONAL STRUCTURAL FAULTS FROM GRAVITY DATA

Geophysics ◽  
1966 ◽  
Vol 31 (5) ◽  
pp. 940-948 ◽  
Author(s):  
Mrinal K. Paul ◽  
Sukumar Datta ◽  
Buddhadeb Banerjee
Keyword(s):  
Horizontal Plane ◽  
Gravity Data ◽  
Direct Determination ◽  
Two Dimensional ◽  
Upward Continuation ◽  
Direct Interpretation ◽  
Dimensional Gravity ◽  
Gravity Profile

Some methods of direct determination of the parameters of a two‐dimensional structural fault with horizontal plane faces, from the gravity profile caused by it, have been formulated in this paper. The upward continuation of the two‐dimensional gravity profile plays an important role in these methods. The determinations by these methods are unique for structures of the same type in the sense that no structure of the same type other than that arrived at by the proposed methods can give rise to the observed anomaly. The necessary coefficients for upward continuation of two‐dimensional gravity data and the theory involved in their determinations form the appendix of this paper.

On: “Direct Interpretation of Two‐Dimensional Structural Faults From Gravity Data,” by Mrinal K. Paul, Sukumar Datta and Buddhadeb Banerjee (GEOPHYSICS, October 1966, p. 940–948)

Geophysics ◽  
1973 ◽  
Vol 38 (5) ◽  
pp. 981-981
Author(s):  
S. K. Choudhury ◽  
R. Amaravadi
Keyword(s):  
Gravity Data ◽  
Two Dimensional ◽  
Correct Equation ◽  
Upward Continuation ◽  
Direct Interpretation ◽  
Gravity Profile

In their paper, Paul et al. have outlined a useful method by which the parameters of a two‐dimensional fault can be directly determined from the gravity data. The upward continuation of the gravity profile over the fault plays a very important role in this method. The necessary coefficients for the upward continuation and the theory involved in their determination form the appendix of the paper. The equation (9) in the appendix is incorrect since for any positive integral values of m and n, the coefficients Q(m, n) become quite large and negative, which will never satisfy the relation (10). The correct equation (9) should be [Formula: see text]

Inversion of gravity data for two-dimensional density distributions

1974 ◽  
Vol 79 (14) ◽  
pp. 2017-2021 ◽  
Author(s):  
L. W. Braile ◽  
G. R. Keller ◽  
W. J. Peeples
Keyword(s):  
Gravity Data ◽  
Two Dimensional ◽  
Density Distributions

scholarly journals Identification of local sesars of tejakula buleleng bali with anomaly gravity data using second vertical derivative method

2020 ◽  
Vol 3 (1) ◽  
pp. 18-25
Author(s):  
Komang Ngurah Suarbawa ◽  
I Gusti Agung Putra Adnyana ◽  
Elvin Riyono
Keyword(s):  
Gravity Anomaly ◽  
Gravity Data ◽  
Three Dimensional ◽  
Fault Model ◽  
Two Dimensional ◽  
Upward Trend ◽  
Gravity Method ◽  
Vertical Derivative ◽  
Subsurface Structures ◽  
Derivative Method

Research has been carried out related to subsurface structures in the Tejakula Buleleng Bali area and its surroundings using the gravity method. This study aims to identify the local Tejakula fault. The data used in this study is gravity anomaly data obtained from observations of Geodetic Satellite (GEOSAT). The method used in interpreting the type of disturbance uses the Second Vertical Derivative method, which then produces two-dimensional (2D) and three-dimensional (3D) fault model interpretations. Based on the results obtained in the study, the condition of the bouguer gravity anomaly value in the Tejakula area and its surroundings at the research location is in the range of 65 mGal to 185 mGal. Meanwhile, based on the Second Vertical Derivative method in determining the type of fault, the Tejakula Fault can be categorized as a mandatory fault with an upward trend.

On: “Inversion of gravity profiles by use of a Backus‐Gilbert approach” by William R. Green (GEOPHYSICS, October 1975, p. 763–772).

Geophysics ◽  
1976 ◽  
Vol 41 (4) ◽  
pp. 777-777
Author(s):  
Ramesh Chander
Keyword(s):  
Gravity Anomaly ◽  
Total Mass ◽  
Gravity Data ◽  
Unit Length ◽  
Three Dimensional ◽  
Density Model ◽  
Dimensional Case ◽  
Two Dimensional ◽  
Mass Excess ◽  
Seminal Paper

An important possible constraint on a density model obtained from inversion of gravity data has been overlooked in the seminal paper by Green. The computed density model should be such that the corresponding total mass excess or deficit per unit length in a two‐dimensional case, or total mass excess or deficit in a three‐dimensional case, should be comparable to the value obtained by applying Gauss’s theorem to the observed gravity anomaly data (Grant and West, 1965, p. 227–28 and p. 232).

A METHOD FOR THE DIRECT INTERPRETATION OF MAGNETIC ANOMALIES CAUSED BY TWO‐DIMENSIONAL VERTICAL FAULTS

Geophysics ◽  
1978 ◽  
Vol 43 (1) ◽  
pp. 179-188 ◽  
Author(s):  
I. R. Qureshi ◽  
A. M. Nalaye
Keyword(s):  
New South ◽  
Ground Surface ◽  
Magnetic Anomalies ◽  
Two Dimensional ◽  
Field Profile ◽  
Master Curves ◽  
Antisymmetric Part ◽  
Western Margin ◽  
South Wales ◽  
Direct Interpretation

The magnetic anomaly profile across a two‐dimensional block faulted at right angles to the ground surface looks very similar to the anomaly profile across a dike and can be decomposed into a symmetric part and an antisymmetric part. Following Koulomzine et al (1970), these parts are separately analyzed and expressions for diagnostic parameters derived. The values of these parameters, obtained from the components of a field profile, help in distinguishing the source (dike or faulted block) and in determining the geometry of the block analytically or with the aid of six master curves. Some features of the application and sensitivity of the method are discussed. Field examples are given from the western margin of the Perth basin in Western Australia and from Lachlan foldbelt in New South Wales.

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