A Bouguer Gravity Anomaly Map of South America PDF Download

Author: Gerald L. Breville
Publisher:
ISBN:
Category : Gravity anomalies
Languages : en
Pages : 50

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Author: Rolf L. Slettene
Publisher:
ISBN:
Category : Gravity anomalies
Languages : en
Pages : 38

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Book Description
A Bouguer Gravity Anomaly Map of Africa has been compiled using only terrestrial data. The map is a contoured representation of one degree x one degree mean anomaly values. Some one degree x one degree values are computed by conventional or statistical means directly from observed gravity data held at DMAAC in the DOD Gravity Library. The majority of the one degree x one degree values are predicted by geophysical-gravity correlation methods. The anomaly pattern shown on the map is discussed and evaluated with respect to regional and local tectonic and geologic patterns. The entire Bouguer anomaly map is computer generated and drawn by an electronic plotting device. (Author).

Author: William J. Hinze
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 480

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Book Description
The subjects of the papers that make up the volume vary from the preparation of national maps to examples of the many uses of regional maps. The anomalities that are discussed range in areal dimension from hundreds of kilometers to tons of meters. The majority of the papers illustrate the utility of the maps in mapping structures and lithologic variations wirhin the continenetal crust, the configuration of the crystalline basements rocks, zones of crustal weakness, distribution of extrusive and intrusive igneous rocks and the geometry of sedimentary basins. Most cases are drawn from the United States and Canada, but examples from Europe, Africa, South America and Asia are included.

Author: Wolfgang Torge
Publisher: Springer Science & Business Media
ISBN: 364288055X
Category : Science
Languages : en
Pages : 304

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Book Description
The 18 papers of the book give a comprehensive overview over recent advancesof geodetic research in Latin America. The book is divided in three parts: 1. Geodetic and gravimetric control in Latin America 2. Regional Gravity and Geoid Determination 3. Geodynamic Research Projects The Symposium was held in Vienna, August 1991, at the General Assembly of the International Union of Geodesy and Geophysics.

Author:
Publisher:
ISBN:
Category : Geological surveys
Languages : en
Pages : 384

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Author: William Emory Bonini
Publisher: Geological Society of America
ISBN: 0813711622
Category : Science
Languages : en
Pages : 438

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Book Description

Author: Roman Pasteka
Publisher: Elsevier
ISBN: 012812914X
Category : Science
Languages : en
Pages : 144

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Book Description
Understanding the Bouguer Anomaly: A Gravimetry Puzzle addresses the geophysical and geodetic applications of gravity field interpretation, taking into account the evaluation of the Bouguer anomaly. Containing several contributions that deal with persistent questions in gravity data processing and providing verified workflows, the book covers historical and practical aspects of the Bouguer anomaly. Geophysicists and exploration geologists will gain advanced knowledge in gravimetry, physical geodesy and an understanding of the evaluation and impact of the Bouguer anomaly in gravity field measurement. - Covers multiple aspects of the Bouguer anomaly, including definition, historical developments and evaluation - Provides verified workflows for gravity data processing, which can be applied across research and industry - Organized with a logical flow that begins with a definition, then continues to describe state-of-the-art and advanced approaches to terrain corrections evaluations - Includes an example of national gravity database organization and re-processing

Author: Geological Survey (U.S.)
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 424

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Scientific notes and summaries of investigations in geology, hydrology, and related fields.

Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 360

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Author: Henglei Zhang
Publisher: Frontiers Media SA
ISBN: 2832543553
Category : Science
Languages : en
Pages : 151

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Book Description
Knowledge of the density of the subsurface of a planet is crucial in determining its interior structure, and one can estimate the average bulk crustal density directly using the admittance between topography and gravity, which has been successfully used for the Moon and is being extended to Mars. The interpretation of gravity data is commonly done by computation of a gravity anomaly (GA) by correcting the raw data for a number of factors that impact the gravity field. Depending on the target science, different types of GA can be computed, the interpretation of which have been widely employed in geophysics to explore the interior of the Earth and other planets, through applications in airborne gravity, near-surface geophysics, regional geophysics, and planetary geophysics. Yet how to extract a great variety of information from GAs for applications in geophysics entails further investigation. Over the decades, remarkable progress has been made to extract information from GAs identified from data. For instance, a series of 3D inversion algorithms facilitates the extraction of the subsurface density distribution. With the improved processing based on dense gravity observations that yield high precision and high resolution GAs, more detailed geological information can be unveiled. When using the admittance between topography and gravity to estimate the crustal density, it is essential to identify what kinds of GAs to be used, such as Bouguer gravity or free-air gravity. Also, what appropriate approaches to scrutinize the applications of GAs in various case studies (e.g., calculating the geoid and estimating the elastic thickness) need to be decoded.