Pleistocene vertebrate faunas of Hungary. D. JÁNOSSY Publisher Elsevier 1986, US $90.00 or DFI 225.00 (208 pp) ISBN 0 444 99526 9     

A. J. Stuart 《第四纪科学杂志》1989,4(3):275-276

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ARCHAEOPTERYX (Letter)     

Stuart Baldwin 《地学学报》1989,1(5):501-501

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Magnetic Anomalies, Bathymetry and the Tectonic Evolution of the South Pacific since the Late Cretaceous   总被引：3，自引：0，他引：3  

Peter Molnar  Tanya Atwater  Jacqueline Mammerickx  Stuart M. Smith 《Geophysical Journal International》1975,40(3):383-420

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The Berkeley parasitic SETI Program     

Stuart Bowyer  Gerry Zeitlin  Jill Tarter  Michael Lampton  William J. Welch 《Icarus》1983,53(1):147-155

Parasitic programs for the Search for Extraterrestrial Intelligence (SETI), carried out concurrently with conventional radio astronomical observing programs, can be an attractive and cost-effective means of exploring the large multidimensional search space intrinsic to this effort. We describe a microprocessor-based automated SETI acquisition system which searches for and records spectra of narrowband signals in the IF band of an observatory receiver. Data taken with this system over 35 days at the Hat Creek Radio Observatory at 1612 MHz are discussed. Out of approximately 10⁵ spectra processed during this period, 4000 were identified by the system as containing narrowband signals and were recorded. Subsequent analysis indicates that over 3900 of these are due to local RF contamination. The remainder are undergoing further investigation.  相似文献   

The effects of near-vertical parallel cracks on shear-wave polarizations     

David C. Booth  Stuart Crampin  Evgenie M. Chesnokov  Maria A. Krasnova 《Geophysical Journal International》1986,87(2):583-594

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Inversion of P-wave velocity anisotropy     

Stuart Crampin  David Bmford 《Geophysical Journal International》1977,49(1):123-132

Summary. We examine the way in which measurements of velocity anisotropy can add to our understanding of upper mantle structure. Measurements of P -wave velocity anisotropy in a single plane contain very little direct information about the anisotropic structure. A promising technique is to fit the observed velocity variation with a mixture of an assumed anisotropic constituent and a proportion of isotropic material. Using this technique, mixtures of orthorhombic and transversely isotropic olivine are obtained, which are in excellent agreement with observed velocity variations in the Pacific.  相似文献   

Mapping water quality and substrate cover in optically complex coastal and reef waters: an integrated approach     

Phinn SR  Dekker AG  Brando VE  Roelfsema CM 《Marine pollution bulletin》2005,51(1-4):459-469

Sustainable management of coastal and coral reef environments requires regular collection of accurate information on recognized ecosystem health indicators. Satellite image data and derived maps of water column and substrate biophysical properties provide an opportunity to develop baseline mapping and monitoring programs for coastal and coral reef ecosystem health indicators. A significant challenge for satellite image data in coastal and coral reef water bodies is the mixture of both clear and turbid waters. A new approach is presented in this paper to enable production of water quality and substrate cover type maps, linked to a field based coastal ecosystem health indicator monitoring program, for use in turbid to clear coastal and coral reef waters. An optimized optical domain method was applied to map selected water quality (Secchi depth, Kd PAR, tripton, CDOM) and substrate cover type (seagrass, algae, sand) parameters. The approach is demonstrated using commercially available Landsat 7 Enhanced Thematic Mapper image data over a coastal embayment exhibiting the range of substrate cover types and water quality conditions commonly found in sub-tropical and tropical coastal environments. Spatially extensive and quantitative maps of selected water quality and substrate cover parameters were produced for the study site. These map products were refined by interactions with management agencies to suit the information requirements of their monitoring and management programs.  相似文献   

Seismic anisotropy—the state of the art     

David Barnford  Stuart Crampin 《Geophysical Journal International》1977,49(1):1-8

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Surface-wave propagation in an ocean basin with an anisotropic upper mantle: observations of polarization anomalies     

S. C. Kirkwood  Stuart Crampin 《Geophysical Journal International》1981,64(2):487-497

Summary. Observations of surface waves crossing ocean basins indicate that, at least in some cases, a better interpretation of what was previously considered to be the simultaneous arrival of fundamental Love and second Rayleigh modes, with similar group velocities, is the coupled motion of the second-generalized mode surface wave propagating in an anisotropic upper-mantle. This mode displays the polarization anomalies expected from anisotropic alignments caused by syntectonic recrystallization of olivine in a zone of horizontal shear. The polarity of the pattern of anomalies, found in waves crossing the Pacific Basin, suggests that the lithosphere is dragging the asthenosphere.  相似文献   

An Investigation of Micropulsations at Middle Latitudes     

W. F. Stuart  M. J. Usher 《Geophysical Journal International》1966,12(1):71-86

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