... comparisons of first-cycle magnitudes, RMS amplitudes in the first 5 and next 10 sec of the waveforms, and energy temporal centroid measurements. Events from the Nevada, Amchitka, and Novaya Zemlya test sites are analyzed separately in order to characterize overall source region variations. Event-averaged...

... of the shot. Later, activity began in the cluster that was stimulated east of the PURSE explosion (Figure 7), and the northeasterly-striking extension of the BENHAM aftershock zone developed. The PIPKIN test at 1430Z on October 8 apparently had little effect on the seismic activity. Five epicenters were...

... Hz. For Pipkin and Handley, the data were recorded on analog tape. The seismograms were low-pass filteredat 10 Hz with a four-pole Butterworth filter.The data were then digitizedat a rate of BRIAN W. STUMP AND LANE R. JOHNSON 54 samples/sec. Digital recording of the data for the Farm test...

... presence of the slope change in the explosion population through the analysis of the regional recordings of two large U.S. underground nuclear tests, HANDLEY and PIPKIN (Table  2 ). Table 2 Case Study Event Information Name Date (yyyy/mm/dd) Time (hh:mm:ss) Latitude (°) Longitude...

...D. S. Carder; Anthony Qamar; T. V. McEvilly Abstract Seismologists from the University of California at Berkeley and the ESSA Earthquake Mechanism Laboratory at San Francisco cooperated in an experiment to record seismic waves along a profile from the Nevada Test Site to San Francisco Bay...

.... Twenty-three wildcat wells with a total footage of 56,406 feet, or 37 per cent of the wells drilled and 20.9 per cent of the footage, were successful in 1953. Two successful deeper-pool wildcat tests were drilled, making the total exploratory footage 11,350. © 1954 American Association...

... ,,3h / / ~ I / t / 61a\l HANDLE ~ T Sh b \ / \~ A / . . . . . \~rh U j A 8h k 0 2 4 6 8 I0 I I II II DISTANCE IKM) FIG. 1. Map of NTS showing University of California accelerometer experiments for the J O R U M - PIPKIN and HANDLEY tests. The lines are travel paths from the recorded explosions...

... moment to event size (as determined from the world wide, average ab amplitude) shows that the two populations are approximately parallel, but offset. The fact that the trends remain separated even at small yields (e.g., PIPKIN and SCOTCH) suggests that for Pahute Mesa there is not a threshold...

... 58 lives and caused over $500 million in damages ($3 billion in 2005 dollars) ( Steinbrugge et al., 1975 ; Ellsworth, 1990 ). The maximum Modified Mercalli Intensity rating was IX in the epicentral area. The San Fernando Earthquake was the first test for new urban developments with regard...

...Michael A. Leonard; Lane R. Johnson Abstract A laterally averaged, one-dimensional P - and S -wave velocity structure is obtained for Silent Canyon Caldera, located beneath Pahute Mesa at the Nevada Test Site. The velocity models are derived from a linearized damped least-squares travel-time...

... the Nevada, Amchitka, and Novaya Zemlya test sites exhibit a common magnitude dependence of the dispersive behavior, with smaller events having relatively enriched low-frequency (0.4 to 0.8 Hz) energy in the coda. For the Nevada and Amchitka sites, the larger events have relatively enhanced high-frequency...

..., Sour Lake & Western through Hull. History .—After the production from the two Gulf Coast oil fields, Spindletop and Sour Lake, began to decline, the Paraffine Oil Company was organized by S. W. Pipkin, W. L. Douglas, and other business men of Beaumont who had, up to this time, no experience...

... to analyze the approximation accuracy and test the feasibility of the obtained new approximations. To facilitate our discussion about the DSR operator, we first briefly review the optimal separable approximation for the SSR operator given by Chen and Liu (2004 , 2006) . We then discuss some related...

... to relatively high rates of wave erosion ( Pipkin et al. , 1992 ). Wave erosion may be comparable to the San Diego area, where Emery and Kuhn ( 1980 ) reported erosion rates ranging from 0.03 to 33 cm/yr for shore platforms and sea cliffs (see Fig. 1 for location). In the San Joaquin Hills, wave erosion...

...P. D. Cate; C. P. Gunter; S. P. Jennings Abstract Total drilling activity in Mississippi, Alabama, Florida, and Georgia increased 4.5% from 1977. A total of 674 tests was drilled compared to 645 in 1977. Exploratory drilling increased from 313 to 314 and new-field discoveries increased from 30...

.... Layman N. S. (1985) . Spalling and tectonic release associated with underground explosions at the Nevada Test Site: evidence from broad band P waves , Bull. Seism. Soc. Am. 76 , 305 - 311 . Given J. W...

...Ram Datt; T. G. Varghese Abstract The spectral features and slowness vector of the PKIKP and PP signals recorded clearly at the Gauribidanur Seismic Array ( GBA ) from four underground explosions ( m b = 5.6, 5.9, 6.2 and 6.6) at the Nevada Test Site ( NTS ) were studied in detail. From...

.... Numerical tests indicate that approximately 10 grid points per shortest wavelength, counted in coarse-grid spacing, with the discontinuous grid method results in accurate calculations as long as a small number of time steps is concerned. 9 2 2000 Copyright © 2001 by the Seismological Society...

... , in Pipkin , B.W. , and Proctor , R.J. , eds., Engineering geology practice in southern California : Association of Engineering Geologists Special Publication , 4 . 233 – 246 . Cunningham , W.D. , Windley , B.F. , Dorjnamjaa , D. , Badamgarov , J. , and Saandar , M...

... of the NevadaTest Site geology. However, some of these changes are corrections of typographical errors or are related to incomplete and sometimes inconsistent record-keeping during the earlier years of underground testing. The reader will also note the addition of specific yield values for several explosions which...