Zobrazeno 1 - 10
of 70
pro vyhledávání: '"Sigmund Hammer"'
Autor:
Stephen Thyssen-Bornemisza
Publikováno v:
GEOPHYSICS. 36:214-216
The interesting analysis by Hammer seems to be founded partly on the approach of Heiskanen and Moritz (1967), in which a real gravity and a vertical gravity gradient are correlated according to the relation [Formula: see text] Here Δg denotes the fr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7ace95baf1fd071e86d00aa56fe848d1
https://doi.org/10.1190/1.1440157
https://doi.org/10.1190/1.1440157
Autor:
T. C. Richards
Publikováno v:
GEOPHYSICS. 29:121-121
The gravity stripping technique in extending interpretation to deep horizons is far from being new as stated by Hammer in his paper, for an important contribution to the subject was made by Evans and Crompton in 1946. These authors do not claim to be
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fe8f7a81ba427cdf6d0d5ae5ce30ce27
https://doi.org/10.1190/1.1439322
https://doi.org/10.1190/1.1439322
Autor:
Sigmund Hammer
Publikováno v:
GEOPHYSICS. 39:205-222
Rigorous calculation of gravity effects of geologic bodies for the interpretation of subsurface structure from exploration gravity surveys is time‐consuming and tedious. Resort to electronic computers is convenient but not always necessary. Simple
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3ba5abb1b95ee760ed1aba55064c851c
https://doi.org/10.1190/1.1440422
https://doi.org/10.1190/1.1440422
Autor:
Sigmund Hammer
Publikováno v:
GEOPHYSICS. 42:60-65
Very serious distortions in both magnitude and extension of local gravity anomalies result from the still widely used 9-point “residual” and 17-point “second derivative” graticules. Although these types of residual maps are very useful for re
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b6d66166bc41a543cac54ad907ae34a3
https://doi.org/10.1190/1.1440714
https://doi.org/10.1190/1.1440714
Autor:
Sigmund Hammer
Publikováno v:
GEOPHYSICS. 41:1346-1352
Progress in airborne gradiometer instrumentation has advanced to the point that procedures for determining corrections for the variable effects of topography merit consideration. An approximate practical method, based on real‐time recording of flig
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::11e00213f4e6ea4b759a0bab04029e32
https://doi.org/10.1190/1.1440684
https://doi.org/10.1190/1.1440684
Autor:
Sigmund Hammer
Publikováno v:
GEOPHYSICS. 39:537-542
A simple, convenient procedure is outlined for evaluating topographic and terrain effects in airborne gravimetry. The method assumes that continuous terrain data (flight elevation and terrain clearance) are available along a traverse. The terrain is
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cec299fedb8e19d4e0882baad9843033
https://doi.org/10.1190/1.1440445
https://doi.org/10.1190/1.1440445
Autor:
Sigmund Hammer
Publikováno v:
GEOPHYSICS. 48:396-399
Terrain corrections for airborne gravity surveying have been a cause of some concern in the exploration industry (Hammer, 1974). Some skepticism still persists that the problem may be troublesome. As a matter of fact, an essential feature of the pres
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ea5d609bc598261d4d29e0429cddc87e
https://doi.org/10.1190/1.1441478
https://doi.org/10.1190/1.1441478
Autor:
Sigmund Hammer, Rodolfo Anzoleaga
Publikováno v:
GEOPHYSICS. 40:256-268
The vast and growing literature on the search for stratigraphic traps for petroleum ignores gravity gradients, for which the theory has been available since the heyday of the Eötvös torsion balance decades ago. These are discussed in this paper. Th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7467ac025fb8b16d1f045830a0dfc496
https://doi.org/10.1190/1.1440523
https://doi.org/10.1190/1.1440523
Autor:
Sigmund Hammer
Publikováno v:
GEOPHYSICS. 8:57-60
The various physical factors constituting the increase in the normal acceleration of gravity of the earth from equator to pole are analyzed mathematically. The magnitudes of the essential factors are (1) centripetal acceleration +3.39 gals, (2) decre
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0974e9c5dcc63485f4f863efc235bf9b
https://doi.org/10.1190/1.1445031
https://doi.org/10.1190/1.1445031
Autor:
Sigmund Hammer
Publikováno v:
GEOPHYSICS. 17:435-440
The oil industry throughout the world last year invested about $325,000,000 in geophysical exploration for oil. This marks a phenomenal growth of the science since its inception less than three decades ago. The commercial acceptance of geophysics is
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4172b856133394fd848646db4ee9dc06
https://doi.org/10.1190/1.1437769
https://doi.org/10.1190/1.1437769