Results 71 to 80 of about 263,844 (209)

Gravity gradient tensor analysis to an active fault: a case study at the Togi-gawa Nangan fault, Noto Peninsula, central Japan

open access: yesEarth, Planets and Space, 2019
Gravity gradient tensor analysis has been a powerful tool for investigating subsurface structures and recently its application to a two-dimensional fault structure has been developed.
Yoshihiro Hiramatsu   +4 more
doaj   +1 more source

Effect of the Generation of Bouguer Anomalies on the Geoid Determination: A Case Study in a High-Mountainous Area

open access: yes
Different types of gravity anomalies are engaged in geophysical and geodetic tasks. Whether they are used for regional or global applications, they require efficient calculations. All variants are based on the so-called free-air gravity anomalies.
Seitz, Kurt, Abbak, Ramazan Alpay
core   +1 more source

A geological interpretation of the Bouguer anomalies adjacent to the Churchill–Superior boundary in northern Manitoba

open access: yes, 1968
The Bouguer anomaly map of nothern Manitoba and part of northeastern Saskatchewan was updated by a gravity survey in 1965. Density determinations of some 2000 Precambrian rock samples provide a sound basis for interpretation of the Bouguer anomalies in ...
R. A. Gibb
core   +1 more source

Gravimetric modeling of the Parguaza granitic intrusion, Guyana Precambrian Shield, southwestern Venezuela using geochronological constraints [PDF]

open access: yesGeofísica Internacional, 2004
A combined gravimetric and geochronological interpretation of the Parguaza intrusion in the Guayana shield, southwestern Venezuela, indicates that there is a pattern of inverse cooling within this pluton.
Oscar Mirón-Valdespino   +3 more
doaj  

Algorithmic and methodological aspects of transformftion of regional gravity anomalies (on the example of the Kuril island arc)

open access: yesВестник Камчатской региональной ассоциации "Учебно-научный центр". Серия: Науки о Земле
The technique of transforming gravity anomalies for large areas, which uses geodetic coordinates of field points and takes into account the spherical shape of the Earth, is considered.
A.S. Dolgal   +3 more
doaj   +1 more source

Geometry of the magma chamber beneath Damavand volcano (N Iran) from a joint study of gravity and magnetic data [PDF]

open access: yesInternational Journal of Mining and Geo-Engineering
Imaging the intra-sediment magma chamber in the Damavand region, northern Iran, is beyond the resolution of the local seismic observations. Gravity anomalies can precisely image the lateral extension of magma reservoir.
Vahid Ebrahim Zadeh Ardestani   +2 more
doaj   +1 more source

Structural model of the Northern Latium volcanic area constrained by MT, gravity and aeromagnetic data

open access: yesAnnals of Geophysics, 1997
The results of about 120 magnetotelluric soundings carried out in the Vulsini, Vico and Sabatini volcanic areas were modeled along with Bouguer and aeromagnetic anomalies to reconstruct a model of the structure of the shallow (less than 5 km of depth ...
P. Gasparini, G. Florio, P. Capuano
doaj   +1 more source

Bouguer Gravity anomalies (ver. 2004) of Japanese Island Arcs and its adjacent seas

open access: yes, 2005
The Hydrographic and Oceanographic Department of Japan have been conducted marine gravity surveys since 1965. Based on theses survey results, precise Bouguer gravity anomaly maps of the Japanese Island arcs and its adjacent seas were compiled by a newly ...
Ueda, Yoshio
core  

Comparison of the spatial location of deep-sea polymetallic sulphide ore objects and deep mantle structure based on geophysical fields in the northern near-equatorial segment of the Mid-Atlantic Ridge

open access: yesВестник Камчатской региональной ассоциации "Учебно-научный центр". Серия: Науки о Земле
A comparison of geophysical data along the segment of the Mid-Atlantic Ridge (MAR) between 10° N and 25° N and seafloor massive sulfides (SMS) ore objects revealed a number of regularities and relationships in their spatial distribution.
S.Yu. Sokolov, A.S. Bich
doaj   +1 more source

Extraction of lineaments and faults using gravity second horizontal derivative data obtained using Fourier transform

open access: yesГеофизический журнал, 2018
Linear anomalies are important in the interpretation of gravity data because they indicate some important structural features. Gravity anomalies obtained from horizontal derivatives generally reflect lineaments and faults or compositional changes which ...
E. E. Epuh, E. O. Joshua
doaj   +1 more source

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