STRUCTURE ELUCIDATION WITH BOREHOLE GRAVIMETRY

Geophysics ◽  
1976 ◽  
Vol 41 (3) ◽  
pp. 491-505 ◽  
Author(s):  
Joseph R. Hearst ◽  
H. L. McKague

The observed densities, assuming infinite homogeneous‐horizontal beds, computed from borehole gravimetry were as much as 15 percent greater than those derived from gamma‐gamma density logs in the lower portion of several clustered boreholes at the U.S. Energy Research & Development Administration (USERDA) Nevada Test Site. A model having a single high‐density buried scarp to the west of the holes was constructed, the gravimetric density calculated, and the model varied in an attempt to improve agreement between measurement and calculation. Only slight improvement was obtained. Newly acquired geologic information made it possible to construct a more complex multiscarp model, providing much better agreement between measurement and calculation. In turn, this more complete model was refined with the help of the calculations. This method permits one to choose between qualitatively different models and, given a qualitatively correct model, to improve it quantitatively.

Author(s):  
Susan Courtney

Focused on the period of atmospheric (above-ground) nuclear weapons testing in the continental United States, from 1945 to 1963, this chapter, written by Susan Courtney, does two things. First, it describes some of the basic conditions and infrastructure that shaped the proliferation of films of nuclear weapons tests, including the U.S. government’s secret military film studio dedicated to this work in the hills above Los Angeles, known as Lookout Mountain Air Force Station or Lookout Mountain Laboratory. Second, it turns to the representational legacy that resulted, which was by no means limited to films made by or for the military. More specifically, it considers how footage of atomic tests in New Mexico and at the Nevada Test Site helped to shape the filmic record of nuclear weapons—and popular cultural memory—by framing the bomb in the desert West, arguably the screen space of American exceptionalism.


1995 ◽  
Author(s):  
Kevin W. Blomquist ◽  
Tim A. Lindemann ◽  
Glen E. Lyon ◽  
Dan C. Steen ◽  
Cathy A. Wills ◽  
...  

2003 ◽  
Vol 33 (1) ◽  
pp. 153-160

The separation wall, one of the largest civil engineering projects in Israel's history, has been criticized even by the U.S. administration, with Condoleezza Rice stating at the end of June 2003 that it ““arouses our [U.S.] deep concern”” and President Bush on 25 July calling it ““a problem”” and noting that ““it is very difficult to develop confidence between the Palestinians and Israel with a wall snaking through the West Bank.”” A number of reports have already been issued concerning the wall, including reports by B'Tselem (available at www.btselem.org), the UN Office for the Coordination of Humanitarian Affairs (available at www.palestinianaid.info), and the World Bank's Local Aid Coordination Committee (LACC; also available at www.palestinianaid.info). UNRWA's report focuses on the segment of the wall already completed and is based on field visits to the areas affected by the barriers, with a special emphasis on localities with registered refugees. Notes have been omitted due to space constraints. The full report is available online at www.un.org/unrwa.


1959 ◽  
Author(s):  
W.H. Diment ◽  
R.E. Wilcox ◽  
G.V. Keller ◽  
E. Dobrovolny ◽  
F.C. Kracek ◽  
...  
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