Search Results - "Purdy, G. M"

Microearthquakes on the Endeavour segment of the Juan de Fuca Ridge by Wilcock, William S. D., Archer, Stephen D., Purdy, G. M.

“…We report the results of a 55‐day microearthquake experiment on the Endeavour segment of Juan de Fuca Ridge. The network covered a 5‐km section of the ridge…”
Get full text

Evidence from gravity data for focused magmatic accretion along the Mid-Atlantic Ridge by Lin, John, Purdy, G. M, Schouten, H, Sempere, J.-C, Zervas, C

“…Gravity data from the Mid-Atlantic Ridge explain that the accretion of magmas at the ridge is focused at discrete centers along the spreading axis. Large…”
Get full text

The three-dimensional seismic velocity structure of the East Pacific Rise near latitude 9° 30′ N by Toomey, Douglas R, Purdy, G. M, Solomon, Sean C, Wilcock, William S. D

“…Three-dimensional images of crustal seismic structure beneath the East Pacific Rise are studied. Thermal segmentation along axis is consistent with injection…”
Get full text

Relationship between spreading rate and the seismic structure of mid-ocean ridges by Purdy, G. M, Kong, L. S. L, Christeson, G. L, Solomon, S. C

“…Evidence was found indicating that a systematic relationship exists between the depth to zones of elevated temperature and partial melt beneath mid-ocean…”
Get full text

Segmentation of the Mid-Atlantic Ridge between 24° N and 30°40' N by Sempéré, Jean-Christophe, Purdy, G. M, Schouten, Hans

“…Analysis of these data reveals the scale and nature of the segmentation of the MAR between the Kane Fracture Zone (24° N) and latitude 30°40' N…”
Get full text

Segmentation and morphotectonic variations along a slow-spreading center: the Mid-Atlantic Ridge (24°00' N-30°40' N) by SEMPERE, J.-C, LIN, J, BROWN, H. S, SCHOUTEN, H, PURDY, G. M

“…Analysis of Sea Beam bathymetry along the Mid-Atlantic Ridge between 24 degree 00' N and 30 degree 40' N reveals the nature and scale of the segmentation of…”
Get full text

Seismic anisotropy of the shallow crust at the Juan de Fuca Ridge by Almendros, Javier, Barclay, Andrew H., Wilcock, William S. D., Purdy, G. M.

“…Microearthquake data recorded on four ocean bottom seismometers are used to study shear‐wave splitting on the Endeavour Segment of the Juan de Fuca Ridge. The…”
Get full text

The Seismic Attenuation Structure of a Fast-Spreading Mid-Ocean Ridge by William S. D. Wilcock, Solomon, Sean C., Purdy, G. M., Toomey, Douglas R.

“…The two-dimensional P-wave attenuation structure of the axial crust of the East Pacific Rise was obtained from an inversion of waveform spectra collected…”
Get full text

Esmolol hydrochloride for management of the cardiovascular stress responses to laryngoscopy and tracheal intubation by Vucevic, M, Purdy, G M, Ellis, F R

“…In a double-blind, randomized, controlled prospective study, 30 grade ASA I/II patients received a continuous i.v. infusion of normal saline or esmolol…”
Get more information

Chromium in aqueous nitrate plutonium process streams: Corrosion of 316 stainless steel and chromium speciation by Smith, W.H., Purdy, G.M.

“…This study was undertaken to determine if chromium(+6) could exist in plutonium process solutions under normal operating conditions. Four individual reactions…”
Get full text

Source signature measurements of underwater explosives at very high ambient pressures by Collins, John A., Broda, James E., Purdy, G. M., Gaspin, Joel, Griffin, Tom, Peletski, Carl, Lipton, Len, Baudler, Bryan

“…The interpretation of seismic refraction experiments carried out on the deep-ocean floor has been hampered by lack of knowledge of the source signatures of…”
Get full text

Structure of the northern symmetrical segment of the Juan de Fuca Ridge by CHRISTESON, G. L, PURDY, G. M, ROHR, K. M. M

“…A seismic refraction profile was shot along the axis of the Northern Symmetrical Segment of the Juan de Fuca Ridge system. Three models of the along-axis…”
Get full text

Estimation of the spatial variability of transmission losses at low frequency in shallow water using multichannel seismic reflection data by PURDY, G. M, DUBOIS, D. L, EWING, J. I

“…Spectral studies of commercial marine multichannel reflection profiling data demonstrate their utility for providing estimates of the degree of spatial…”
Get full text

A determination of the seismic velocity structure of sediments using both sources and receiver near the ocean floor by PURDY, G. M

“…A trial experiment proves the power and practicality of using both sources and receivers near the ocean floor to make precise measurements of deep ( similar to…”
Get full text

The renavigation of sea beam bathymetric data between 9°N and 10°N on the East Pacific Rise by WILCOCK, W. S. D, TOOMEY, D. R, PURDY, G. M, SOLOMON, S. C

Get full text

Seismic reflection profiling with a deep-towed vertical hydrophone array by COLLINS, J. A, KOELSCH, D. E, PURDY, G. M

“…A seismic reflection profiling system consisting of a 264m long, deep-towed, 15-element, end-fire, vertical array and a 40 cubic inch airgun was successfully…”
Get full text

Reflection profiling in the deep ocean using a near bottom hydrophone by Purdy, G. M., Gove, L. A.

“…A 20 km long high resolution seismic reflection profile was carried out approximately 300 km southwest of Bermuda. The data were collected using a small airgun…”
Get full text

A deep towed explosive source for seismic experiments on the ocean floor by Koelsch, Donald E., Witzell, Warren E., Broda, James E., Wooding, Frank B., Purdy, G. M.

“…A new seismic source for carrying out high resolution measurements of deep ocean crustal structure has been constructed and successfully used in a number of…”
Get full text

The seismic structure of 140 Myr old crust in the western central Atlantic Ocean by Purdy, G. M.

“…A detailed seismic refraction experiment using explosive sources and ocean bottom hydrophone (OBH) receivers was carried out over Mesozoic magnetic anomaly M17…”
Get full text

Segmentation of the Mid-Atlantic Ridge between 24°N and 30°40'N by SEMPERE, J.-C, PURDY, G. M, SCHOUTEN, H

“…The results of a recent investigation of a near 800-kilometer-long section of the Mid-Atlantic Ridge (MAR), carried out using the multibeam echo-sounder…”
Get full text