The NASA Astrophysics Data System: Free Access to the Astronomical Literature On-line and through Email     

Guenther Eichhorn  Alberto Accomazzi  Carolyn S. Grant  Michael J. Kurtz  Stephen S. Murray 《Astrophysics and Space Science》2002,282(1):299-340

The Astrophysics Data System (ADS) provides access to the astronomical literature through the World Wide Web. It is a NASA funded project and access to all the ADS services is free to everybody world-wide. The ADS Abstract Service allows the searching of four databases with abstracts in Astronomy, Instrumentation, Physics/Geophysics, and the LANL Preprints with a total of over 2.2 million references. The system also provides access to reference and citation information, links to on-line data, electronic journal articles, and other on-line information. The ADS Article Service contains the full articles for most of the astronomical literature back to volume 1. It contains the scanned pages of all the major journals (Astrophysical Journal, Astronomical Journal, Astronomy & Astrophysics, Monthly Notices of the Royal Astronomical Society, and Solar Physics), as well as most smaller journals back to volume 1.The ADS can be accessed through any web browser without signup or login. Alternatively an email interface is available that allows our users to execute queries via email and to retrieve scanned articles via email. This might be interesting for users on slow or unreliable links, since the email system will retry sending information automatically until the transfer is complete. There are now 9 mirror sites of the ADS available in different parts of the world to improve access. The ADS is available at: http://ads.harvard.edu This revised version was published online in July 2006 with corrections to the Cover Date.  相似文献   

Forgotten coast,forgotten people: sustainable development and disproportionate impacts from Hurricane Michael in Gulf County,Florida     

Boda  Chad S.  Scown  Murray W.  Faran  Turaj 《Natural Hazards》2022,111(1):877-899

Natural Hazards - A central challenge for sustainable development is how societies are to avoid, minimize or address impacts from anthropogenic climate change. However, competing perspectives on...  相似文献   

Glaciers and environmental change. A. Nesje and S.V. Dahl. Publisher Arnold,London 2000 (203 pp) £45.00 (hardback) ISBN 0‐340‐70637‐6 £18.99 (paperback) ISBN 0‐340‐70634‐1     

Murray Gray 《第四纪科学杂志》2001,16(2):200-200

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Optical and X-ray observations of the neutron star soft X-ray transient XTE J1709–267     

P. G. Jonker †  D. K. Galloway  J. E. McClintock  M. Buxton  M. Garcia  S. Murray 《Monthly notices of the Royal Astronomical Society》2004,354(3):666-674

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The origin of the rebrightening in soft X-ray transient outbursts     

M. R. Truss  G. A. Wynn  J. R. Murray  A. R. King 《Monthly notices of the Royal Astronomical Society》2002,337(4):1329-1339

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Propagation of solar flare-associated interplanetary shock waves in the heliospheric meridional plane   总被引：4，自引：0，他引：4  

Wei Fengsi  Murray Dryer 《Solar physics》1991,132(2):373-394

We have analyzed 149 flare-associated shock wave events based on interplanetary scintillation (IPS) observational data. All of the flare-associated shock waves tend to propagate toward the low latitude region near the solar equator for flares that are located in both the solar northern and southern hemispheres. Also, the fastest propagation directions tend toward the heliospheric current sheet near 1 AU. We suggest that this tendency is caused by the dynamic action of near-Sun magnetic forces on the ejected coronal plasma that traverses the helmet-like magnetic topologies near the Sun outward to the classical topology that is essentially parallel to the heliospheric current sheet.  相似文献   

Bedform topography and basal conditions beneath a fast-flowing West Antarctic ice stream     

Andy M. Smith  Tavi Murray 《Quaternary Science Reviews》2009,28(7-8):584-596

A grid of seismic reflection lines has been used to image basal topography and infer basal conditions and flow processes beneath ～140 km² of Rutford Ice Stream, West Antarctica. The subglacial topography in this region consists of two troughs flanking a central high and the bed is composed of water-saturated sediments. The two troughs are filled with deforming sediment, whereas the bed in the central region appears to undergo a transition from largely deforming conditions upstream to basal sliding downstream. The deforming bed is very flat along flow, but undulates across flow. Sliding areas show rougher bed topography. Cross-stream bed topography is characterised by streamlined mounds of deforming sediment aligned in the ice flow direction. These bedforms occur superimposed on the bed in regions of both basal sliding and sediment deformation. In places, they form finger-like mounds of material, which extend into the sliding region further downstream. Mean bedform height is 22 m, mean width is 267 m, and many of them extend for at least 1–2 km along flow. We interpret most of these bedforms as drumlins and one as a mega-scale glacial lineation. The juxtaposition of different basal conditions is consistent with models proposed from terrestrial studies in which the glacier bed is a mosaic of stable and deforming bed areas, variable both spatially and temporally. Any theory of subglacial sediment rheology must also be able to account for our conclusion that, at any given time, pervasive deformation extends at least a few metres into the bed and can persist over a considerable area (many km²). Bedform geometry and basal conditions concur with interpretations of former ice streams, with evidence for increasing elongation ratio with distance downstream. However, those studies also identified bedrock cropping out at the ice-bed interface, for which there is no evidence on Rutford Ice Stream.  相似文献   

Consolidation with threshold gradients     

Florica Pascal  Henry Pascal  D. W. Murray 《国际地质力学数值与分析法杂志》1981,5(3):247-261

Evidence for threshold gradients is reviewed. The consolidation problem, with threshold gradient, is properly formulated and solved numerically. An approximate analytical solution is also developed. The influence of a threshold gradient on the time rate of settlement is examined, and it is shown that by modifying the definition of the degree of consolidation a good approximation to the threshold gradient problem can be obtained directly from the Terzaghi solution. It is also shown that threshold gradients will have no influence on odometer testing and their effect is, therefore, to reduce the primary compression below that predicted from standard tests.  相似文献   

An introduction to global environmental issues. Kevin T. Pickering and Lewis A. Owen. Publisher Routledge,London 1994 (390 pp) £50.00 ISBN 0 415 10227 8 (hbk), £15.99 0 415 10228 6 (pbk)     

Murray Gray 《第四纪科学杂志》1995,10(2):186-186

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Three tenuous rings/arcs for three tiny moons     

M.M. Hedman  C.D. Murray  M.S. Tiscareno  M.W. Evans 《Icarus》2009,199(2):378-386

Using Cassini images, we examine the faint material along the orbits of Methone, Anthe and Pallene, three small moons that reside between the orbits of Mimas and Enceladus. A continuous ring of material covers the orbit of Pallene; it is visible at extremely high phase angles and appears to be localized vertically to within ±25 km of Pallene's inclined orbit. By contrast, the material associated with Anthe and Methone appears to lie in longitudinally confined arcs. The Methone arc extends over ∼10° in longitude around the satellite's position, while the Anthe arc reaches ∼20° in length. The extents of these arcs are consistent with their confinement by nearby corotation eccentricity resonances with Mimas. Anthe has even been observed to shift in longitude relative to its arc in the expected manner given the predicted librations of the moon.  相似文献