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846篇 您的检索式:作者名="Carr R"
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1pTC-1 observation of ion high-speed flow reversal in the near-Earth plasma sheet during substorm显示文摘Based on measurements of FGM and HIA on board TC-1 at its apogee on Septem-ber 14, 2004, we analyzed the ion high-speed flows in the near-Earth plasma sheet observed during the substorm expansion phase. Strong tailward high-speed flows (Vx ~ -350 km/s) were first seen at about X ~ -13.2 RE in near-Earth magnetotail, one minute later the flows reversed from tailward to earthward. The reversal process occurred quickly after the substorm expansion onset. The near-Earth magnetotail plasma sheet was one of key regions for substorm onset. Our analysis showed that the ion flow reversal from tailward to earthward was likely to be in close relation with the substorm expansion initiation and might play an important role in trigger-ing the substorm expansion onset.H. RME I. DANDOURAS C. M. CARR 2008Science China(Technological Sciences)2008,51,10:6
2Surveys on magnetospheric plasmas based on the Double Star Project (DSP) exploration显示文摘The equatorial and polar satellites of the Double Star Project (DSP) were launched successfully on December 29, 2003 and July 25, 2004, respectively, and both of them are operating smoothly. The DSP provides a good opportunity for investigat-ing the structure of the magnetosphere. Based on the DSP data collected during 2004, we have surveyed the distribution of the magnetic fields and plasmas in the magnetosphere. It is found that: (1) Near the Earth’s equatorial plane within geo-centric distances of less than 7 RE, the Earth’s magnetic field is dipolar. In the vi-cinity of the magnetopause, the magnetic field is enhanced by a factor of about 1.5, and on the nightside, the magnetic field can vary significantly from the Earth’s di-pole field, likely caused by the presence of the near-Earth tail current sheet. (2) In the day-side magnetosheath, the electron and ion densities are usually both in the range of 10―30 cm?3; the ion and electron temperatures are usually about 200 and 50 eV, respectively. The flow pattern is usually smooth, with a low velocity in the subsolar region and with significantly higher velocities in the dawn and dusk flanks. (3) In the region between the magnetopause and plasmasphere the density is low, approximately 0.5―5 cm?3, and the temperature is high, about 1―10 keV for ions and 0.1―5 keV for electrons. The ion temperature has an apparent anisotropy, with the ratio of the perpendicular and parallel temperatures being about 1.0―1.3 for the night- and dusk-side magnetosphere and about 1.3―2.0 for the day- and dawn-side magnetosphere. There is an evident sunward convection of about 50 km/s in the magnetosphere. On the dawn side, the flow becomes somewhat turbulent, and in the vicinity of the night-noon meridian plane, the convection is rather slow. (4) The high-energy electrons with energies higher than 2 MeV are mainly located in the regions with 3 < L < 4.5; the size of the high-energy electrons area varies with time, it may expand and shrink occasionally according to different solar wind conditions and magnetic activities.C. P. ESCOUBET C. M. CARR H. RME A. FAZAKERLEY H. LAAKSO I. DANDOURAS M. DUNLOP 2008Science China(Technological Sciences)2008,51,10:5
3Solar wind transport into magnetosphere caused by magnetic reconnection at high latitude magnetopause during northward IMF: Cluster-DSP conjunction observations显示文摘An event of Cluster-Double Star conjunction observations of magnetic reconnec-tion at high latitude magnetopause nightside of both cusps and solar wind trans-port into magnetosphere caused by such reconnection process has been investi-gated. During northward IMF, Cluster/SC1 observed accelerated flows and ion heating associated with magnetic reconnection at high latitude magnetopause nightside of southern cusp. And Double Star observed cold dense solar wind plasma transported into dayside magnetosphere. The analysis on such conjunction observations shows that: (1) during northward IMF, magnetic reconnection occurs at high latitude nightside of southern cusp, accompanied by accelerated flows that are observed by Cluster/SC1; (2) the direction of the accelerated flows, with its sunward component Vx, dawnward component Vy, northward component Vz, is quite consistent with the theoretical anticipation under the condition of northward IMF with dawnward component By; (3) reconnection can heat plasma more in par-allel direction than in perpendicular direction, to a level of about 4 keV; (4) with reconnection taking place at high latitude magnetopause nightside of the southern cusp, TC-1 observed cold and dense plasma transported into magnetosphere; (5) by reconnection at high latitude magnetopause nightside of both cusps, solar wind flux tube can be captured by magnetosphere and pulled into dayside magneto-sphere. This event presents further observational evidence for magnetic reconnec-tion at high latitude magnetopause nightside of both cusps as an important mech-anism of sol-ar w-ind transport into magnetosphere.M. DUNLOP E. LUCEK H. RME C. M. CARR 2008Science China(Technological Sciences)2008,51,10:3
4Shrinkage of magnetosphere observed by TC-1 satellite during the high-speed solar wind stream显示文摘During the interval 06:14―07:30 UT on August 24, 2005, since the Earth’s magneto- pause was suddenly compressed by the persistent high-speed solar wind stream with the southward component of the interplanetary magnetic field (IMF), the magnetopause moved inward for about 3.1 RE. Meanwhile, TC-1 satellite shifted from northern plasma sheet to the northern lobe/mantle region, although it kept inward flying during the interval 06:00―07:30UT. The shift of TC-1 from the plasma sheet to the lobe/mantle is caused by the simultaneous inward displacements of the plasma sheet and near-Earth lobe/mantle region, and their inward movement velocity is larger than the inward motion velocity of TC-1. The joint inward dis-placements of the magnetopause, the lobe/mantle region and the plasma sheet indicate that the whole magnetosphere shrinks inward due to the magnetospheric compression by the high-speed solar wind stream, and the magnetospheric ions are attached to the magnetic field lines (i.e. ‘frozen’ in magnetic field) and move inward in the shrinking process of magnetosphere. The large shrinkage of magne-tosphere indicates that the near-Earth magnetotail compression caused by the strong solar wind dynamic pressure is much larger than its thickening caused by the southward component of the IMF, and the locations of magnetospheric regions with different plasmas vary remarkably with the variation of the solar wind dynamic pressure.H. RME I. DANDOURAS C. M. CARR 2008Science China(Technological Sciences)2008,51,10:3
5Rigid polyurethane foam prepared from extruded starch-derived glycol glucosides as chemical intermediates显示文摘Carr M E Cunn Ingham R L 1992Starch/Staerke1992,44,5:1
6显示文摘Demange P Carr C W Negres R A 2005Opt Lett2005,30,:1
7Questionnaire on the perceptions of patients about shoulder surgery显示文摘 Fitzpatrick R Carr A 1996J Bone Joint Surg(Br)1996,78,:1
8Pathophysiology of spinal injury recovery after immediate and delayed decompression显示文摘 SHERMAN J CARR J B 1998J Bone Joint Surg1998,77,8:1
9Computed tomographic assessment of fractures of the posterior wall of the acetabulum after operative treatment显示文摘Moed B R Willson Carr S E Gruson K I 2007J Bone Joint Surg Am2007,85,3:1
10Development and evaluation of sediment quality guidelines for Florida coastal waters显示文摘MACDONALD D D CARR R S CALDER F D 1996Ecotoxicology1996,5,:1
11Ovarian granulosa cell lines显示文摘Havelock J C Rainey W E Carr B R 2004Mol Cell Endocrinol2004,228,12:1
12Insights and new direc- tions from demand-side approaches to technology inno- vation, entrepreneurship, and strategic management re- search显示文摘Priem R L Li S Carr J C 2012Journal of Management2012,38,1:1
13The Photoassisted Reaction of Gaseous Water and Carbon Dioxide Adsorbed on the SrTiO 3 (Ⅲ)Crystal Face to Form Methane显示文摘Hemminger J C Carr R Somorjai G A 1978Chem Phys Lett1978,57,1:1
14Histochemistry and morphology of porcine mast cells 显示文摘Xu L R Carr M M Bland A P 1993Histochem J1993,25,:1
15The assessment of shoulder instability:the development and validation of a questionnaire显示文摘 Fitzpatrick R Carr A 1999J Bone Joint Surg(Br)1999,81,:1
16Sensitivity analysis for structural errors 显示文摘NOWAK A S CARR R I 1985Journal of the structural engineering1985,,8:1
17Reaction of ketene with atomic hydrogen and oxygen 显示文摘Carr R W Jr Gay I D 1968J Chem Phys1968,49,2:1
18Semivariogram textural classification of JERS-1(FUYO-1) SAR data obtained over a flooded area of the Amazonian rainforest显示文摘Miranda F P Fonseca L E N Carr J R 2000International Journal of Remote Sensing2000,19,3:1
19Surface interpolation with radial basis functions for medical imaging显示文摘CARR J C FRIGHT W BEATSON R K 1997IEEE Transactions on Medical Imaging1997,16,1:1
20Stereospecific high-performance liquid chromatographic assay of Iomefloxacin in human plasma显示文摘FOSTER R T CARR R A PASUTTO F M LONGSTRETH J A 1995J Pharm Biomed Anal1995,13,10:1
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