Geophysical Research Letters - Vol. 28, No. 9, May 1, 2001

Geophysical Research Letters - Vol. 28, No. 10, May 15, 2001

[Cover Caption] [Highlights] [Issue Cover] [Front Page]

Howard, J. E. ; Horányi, M. 2001
Nonkeplerian Dust Dynamics at Saturn
Geophys. Res. Lett. Vol. 28 , No. 10w , p. 1907 (2000GL012792)
keywords: 2732 Magnetospheric physics; Magnetosphere interactions with satellites and rings 6213 Planetology: Solar system objects (New field); Dust 6265 Planetary rings
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Russell, C. T. ; Yu, Z. J. ; Kivelson, M. G. 2001
The Rotation Period of Jupiter
Geophys. Res. Lett. Vol. 28 , No. 10 , p. 1911 (2001GL012917)
keywords: 5734Planetology: fluid planets; Magnetic fields and magnetism 6220 Planetology: Solar system objects (New field); Jupiter
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Richter, I. ; Brinza, D. E. ; Cassel, M. ; Glassmeier, K.-H. ; Kuhnke, F. ; Musmann, G. ; Othmer, C. ; Schwingenschuh, K. ; Tsurutani, B. T. 2001
First Direct Magnetic Field Measurements of an Asteroidal Magnetic Field: DS1 at Braille
Geophys. Res. Lett. Vol. 28 , No. 10 , p. 1913 (2000GL012679)
keywords: 6025 Planetology: comets and small bodies; Interactions with solar wind plasma and fields 6030 Magnetic fields and magnetism 6094 Instruments and techniques 6205 Planetology: Solar system objects (New field); Asteroids and meteoroids
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Vocks, C. ; Marsch, E. 2001
A semi-kinetic model of wave-ion interaction in the solar corona
Geophys. Res. Lett. Vol. 28 , No. 10 , p. 1917 (2000GL012764)
keywords: 2164 Interplanetary physics; Solar wind plasma 2169 Sources of the solar wind 7509 Solar physics, astrophysics, and astronomy; Corona 7867 Space plasma physics; Wave/particle interactions
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Siscoe, G. L. ; Erickson, G. M. ; Sonnerup, B. U. Ö ; Maynard, N. C. ; Siebert, K. D. ; Weimer, D. R. ; White, W. W. 2001
Magnetospheric sash dependence on IMF direction
Geophys. Res. Lett. Vol. 28 , No. 10 , p. 1921 (2000GL003784)
keywords: 2724 Magnetospheric physics; Magnetopause, cusp, and boundary layers 2740 Magnetospheric configuration and dynamics 2784 Solar wind/magnetosphere interactions
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Moldwin, Mark B. ; Collier, M. R. ; Slavin, J. A. ; Szabo, A. 2001
On the origin of reverse polarity TCRs
Geophys. Res. Lett. Vol. 28 , No. 10 , p. 1925 (2000GL012485)
keywords: 2111 Interplanetary physics; Ejecta, driver gases, and magnetic clouds 2134 Interplantary magnetic fields 2744 Magnetospheric physics; Magnetotail 2784 Solar wind/magnetosphere interactions
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Mathews, J. D. ; Janches, D. ; Meisel, D. D. ; Zhou, Q.-H. 2001
The micrometeoroid mass flux into the upper atmosphere: Arecibo results and a comparison with prior estimates
Geophys. Res. Lett. Vol. 28 , No. 10 , p. 1929 (2000GL012621)
keywords: 0322 Atmospheric composition and structure; Constituent sources and sinks 1630 Global Change; Impact phenomena 2129 Interplanetary physics;Interplanetary dust 6205 Planetology: Solar system objects (New field); Asteroids and meteoroids
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Haldoupis, C. ; Hussey, G. C. ; Bourdillon, A. ; Delloue, J. 2001
Azimuth-Time Intensity striations of quasiperiodic radar echoes from the midlatitude E region ionosphere
Geophys. Res. Lett. Vol. 28 , No. 10 , p. 1933 (2000GL012822)
keywords: 2427 Ionosphere; Ionosphere/atmosphere interactions (0335) 2439 Ionospheric irregularities 2443 Midlatitude ionosphere 2471 Plasma waves and instabilities
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Chu, Xinzhao ; Gardner, Chester S. ; Papen, George 2001
Lidar Observations of Polar Mesospheric Clouds at South Pole: Diurnal Variations
Geophys. Res. Lett. Vol. 28 , No. 10 , p. 1937 (2000GL012525)
keywords: 0320 Atmospheric composition and structure; Cloud physics and chemistry 0340 Middle atmosphere--composition and chemistry 3334 Meteorology and atmospheric dynamics; Middle atmosphere dynamics (0341, 0342) 3384 Waves and tides
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Frieß, U. ; Wagner, T. ; Pundt, I. ; Pfeilsticker, K. ; Platt, U. 2001
Spectroscopic Measurements of Tropospheric Iodine Oxide at Neumayer Station, Antarctica
Geophys. Res. Lett. Vol. 28 , No. 10 , p. 1941 (2000GL012784)
keywords: 0365 Atmospheric composition and structure; Troposphere--composition and chemistry
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Allan, B. J. ; Plane, J. M. C. ; McFiggans, G. 2001
Observations of OIO in the remote marine boundary layer
Geophys. Res. Lett. Vol. 28 , No. 10 , p. 1945 (2000GL012468)
keywords: 0300 Atmospheric composition and structure 0365 Troposphere--composition and chemistry
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Hoffmann, Thorsten ; O'Dowd, Colin D. ; Seinfeld, John H. 2001
Iodine oxide homogeneous nucleation: An explanation for coastal new particle production
Geophys. Res. Lett. Vol. 28 , No. 10 , p. 1949 (2000GL012399)
keywords: 0300 Atmospheric composition and structure 0315 Biosphere/atmosphere interactions 0365 Troposphere--composition and chemistry
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Palmer, Anne S. ; van Ommen, Tas D. ; Curran, Mark A. J. ; Morgan, Vin 2001
Ice-core evidence for a small solar-source of atmospheric nitrate
Geophys. Res. Lett. Vol. 28 , No. 10 , p. 1953 (2000GL012207)
keywords: 0322 Atmospheric composition and structure;Constituent sources and sinks 1610 Global Change; Atmosphere (0315, 0325) 1650 Solar variability 1827 Hydrology; Glaciology (1863)
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Saathoff, H. ; Naumann, K.-H. ; Riemer, N. ; Kamm, S. ; Möhler, O. ; Schurath, U. ; Vogel, H. ; Vogel, B. 2001
The loss of NO^₂, HNO^₃, NO^₃/N^₂O^₅, and HO^₂/HOONO^₂ on soot aerosol: A chamber and modeling study
Geophys. Res. Lett. Vol. 28 , No. 10 , p. 1957 (2000GL012619)
keywords: 0305 Atmospheric composition and structure; Aerosols and particles (0345, 4801) 0317 Chemical kinetic and photochemical properties 0345 Pollution--urban and regional (0305)
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Behr, Peter ; Morris, John R. ; Antman, Melissa D. ; Ringeisen, Bradley R. ; Splan, Jennifer R. ; Nathanson, Gilbert M. 2001
Reaction and desorption of HCl and HBr following collisions with supercooled sulfuric acid
Geophys. Res. Lett. Vol. 28 , No. 10 , p. 1961 (2000GL012716)
keywords: 0305 Atmospheric composition and structure; Aerosols and particles (0345, 4801) 0317 Chemical kinetic and photochemical properties
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Noziére, B. ; Longfellow, C. A. ; Henry, B. E. ; Voisin, D. ; Hanson, D. R. 2001
Uptake of nopinone by water: Comparison between aqueous- and gas-phase oxidation of organic compounds in the atmosphere
Geophys. Res. Lett. Vol. 28 , No. 10 , p. 1965 (2000GL012663)
keywords: 0305 Atmospheric composition and structure; Aerosols and particles (0345, 4801) 0317 Chemical kinetic and photochemical properties 0320 Cloud physics and chemistry 0365 Troposphere--composition and chemistry
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Hartmann, Dennis L. ; Holton, James R. ; Fu, Qiang 2001
The heat balance of the tropical tropopause, cirrus, and stratospheric dehydration
Geophys. Res. Lett. Vol. 28 , No. 10 , p. 1969 (2000GL012833)
keywords: 0341 Atmospheric composition and structure; Middle atmosphere--constituent transport and chemistry (3334) 3314 Meteorology and atmospheric dynamics; Convective processes 3359 Radiative processes 3362 Stratosphere/troposphere interactions
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Anderson, Bruce T. ; Roads, John O. 2001
Summertime moisture divergence over The southwestern US and northwestern Mexico
Geophys. Res. Lett. Vol. 28 , No. 10 , p. 1973 (2001GL012903)
keywords: 1836 Hydrology; Hydrologic budget (1655) 3309 Meteorology and atmospheric dynamics;Climatology (1620) 3314 Convective processes 3354 Precipitation (1854)
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Kotroni, V. ; Lagouvardos, K. 2001
Precipitation forecast skill of different convective parameterization and microphysical schemes: application for the cold season over Greece
Geophys. Res. Lett. Vol. 28 , No. 10 , p. 1977 (2000GL012705)
keywords: 3314 Meteorology and atmospheric dynamics; Convective processes 3329 Mesoscale meteorology 3337 Numerical modeling and data assimilation 3354 Precipitation (1854)
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Katzberg, Stephen J. ; Walker, Richard A. ; Roles, James H. ; Lynch, Terry ; Black, Peter G. 2001
First GPS signals reflected from the interior of a tropical storm: Preliminary results from Hurricane Michael
Geophys. Res. Lett. Vol. 28 , No. 10 , p. 1981 (2000GL012823)
keywords: 4275 Oceanography: general; Remote sensing and electromagnetic processes (0689) 4594 Oceanography: physical; Instruments and techniques 6959 Radio science; Radio oceanography
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de Viron, O. ; Marcus, S. L. ; Dickey, J. O. 2001
Atmospheric torques during the winter of 1989: Impact of ENSO and NAO positive phases
Geophys. Res. Lett. Vol. 28 , No. 10 , p. 1985 (2000GL012675)
keywords: 1223 Geodesy and gravity; Ocean/Earth/atmosphere interactions (3339) 3322 Meteorology and atmospheric dynamics; Land/atmosphere interactions
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Diaz, J. P. ; Arbelo, M. ; Expósito F. J. ; Podestá, G. ; Prospero, J. M. ; Evans, R. 2001
Relationship between errors in AVHRR-derived sea surface temperature and the TOMS Aerosol Index
Geophys. Res. Lett. Vol. 28 , No. 10 , p. 1989 (2000GL012446)
keywords: 0305 Atmospheric composition and structure; Aerosols and particles (0345, 4801) 4275 Oceanography: general; Remote sensing and electromagnetic processes (0689) 4801 Oceanography: biological and chemical; Aerosols (0305)
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Levy, Gad 2001
Boundary layer roll statistics from SAR
Geophys. Res. Lett. Vol. 28 , No. 10 , p. 1993 (2000GL012667)
keywords: 1620 Global Change; Climate dynamics (3309) 1640 Remote sensing 3307 Meteorology and atmospheric dynamics; Boundary layer processes 4504 Oceanography: physical; Air/sea interactions (0312)
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Xia, Xiangao ; Wang, Mingxing 2001
Commentary on: New method for inferring total ozone and aerosol optical thickness from multispectral extinction Measurements using eigenvalue analysis By G. P. Box and G. Taha
Geophys. Res. Lett. Vol. 28 , No. 10 , p. 1997 (2000GL012561)
keywords: 0340 Atmospheric composition and structure; Middle atmosphere--composition and chemistry 0350 Pressure, density, and temperature 0360 Transmission and scattering of radiation 0394 Instruments and techniques
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Box, G. P. ; Taha, G. 2001
Reply to Comment on: "New method for inferring total ozone and aerosol optical thickness from multispectral extinction measurements using eigenvalue analysis by G. P. Box amd G. Taha" by Xiangao Xia and Minging Wang
Geophys. Res. Lett. Vol. 28 , No. 10 , p. 1999 (2001GL013210)
keywords: 0340 Atmospheric composition and structure; Middle atmosphere--composition and chemistry 0350 Pressure, density, and temperature 0360 Transmission and scattering of radiation 0394 Instruments and techniques
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Akmaev, R. A. 2001
Comments on "Midlatitude temperatures at 87 km: Results from multi-instrument Fourier analysis" by Drob et al.
Geophys. Res. Lett. Vol. 28 , No. 10 , p. 2001 (2000GL012053)
keywords: 3332 Meteorology and atmospheric dynamics; Mesospheric dynamics 3337 Numerical modeling and data assimilation 3369 Thermospheric dynamics (0358) 3384 Waves and tides
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Drob, Douglas P. ; Picone, J. Michael ; Eckermann, Stephen D. 2001
Response to comments by R. A. Akmaev on "Mid-latitude temperature at 87-km: Results from multi-instrument Fourier analysis"
Geophys. Res. Lett. Vol. 28 , No. 10 , p. 2003 (2000GL012665)
keywords: 0350 Atmospheric composition and structure; Pressure, density, and temperature
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Strutton, Peter G. ; Ryan, John P. ; Chavez, Francisco P. 2001
Enhanced chlorophyll associated with tropical instability waves in the equatorial Pacific
Geophys. Res. Lett. Vol. 28 , No. 10 , p. 2005 (2000GL012166)
keywords: 4520 Oceanography: physical; Eddies and mesoscale processes 4522 El Niño 4528 Fronts and jets 4855 Oceanography: biological and chemical; Plankton
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Brooks, Ian M. 2001
Air-Sea Interaction and Spatial Variability of the Surface Evaporation Duct in a Coastal Environment
Geophys. Res. Lett. Vol. 28 , No. 10 , p. 2009 (2000GL012751)
keywords: 3307 Meteorology and atmospheric dynamics; Boundary layer processes 3339 Ocean/atmosphere interactions (0312, 4504) 6904 Radio science; Atmospheric propagation 6964 Radio wave propagation
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Choi, Byung Ho ; Hong, Sung Jin ; Pelinovsky, Efim 2001
Simulation of prognostic tsunamis on the Korean coast
Geophys. Res. Lett. Vol. 28 , No. 10 , p. 2013 (2000GL012534)
keywords: 4200 Oceanography: general 4255 Numerical modeling 4500 Oceanography: physical 4564 Tsunamis and storm surges
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Johnson, Mark A. ; Polyakov, Igor V. 2001
The Laptev Sea as a source for recent Arctic Ocean salinity changes
Geophys. Res. Lett. Vol. 28 , No. 10 , p. 2017 (2000GL012740)
keywords: 4207 Oceanography: general; Arctic and Antarctic oceanography 4215 Climate and interannual variability (3309) 4540 Oceanography: physical; Ice mechanics and air/sea/ice exchange processes 4572 Upper ocean processes
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Nakamoto, S. ; Kumar, S. Prasanna ; Oberhuber, J. M. ; Ishizaka, J. ; Muneyama, K. ; Frouin, R. 2001
Response of the equatorial Pacific to chlorophyll pigment in a mixed layer isopycnal ocean general circulation model
Geophys. Res. Lett. Vol. 28 , No. 10 , p. 2021 (2000GL012494)
keywords: 4231 Oceanography: general;Equatorial oceanography 4255 Numerical modeling 4532 Oceanography: physical; General circulation 4855 Oceanography: biological and chemical; Plankton
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Mitsudera, Humio ; Waseda, Takuji ; Yoshikawa, Yasushi ; Taguchi, Bunmei 2001
Anticyclonic eddies and Kuroshio meander formation
Geophys. Res. Lett. Vol. 28 , No. 10 , p. 2025 (2000GL012668)
keywords: 4520 Oceanography: physical; Eddies and mesoscale processes 4528 Fronts and jets 4576 Western boundary currents
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Lluch-Cota, Daniel B. ; Wooster, Warren S. ; Hare, Steven R. 2001
Sea surface temperature variability in coastal areas of the Northeastern Pacific related to the El Niño-Southern Oscillation and the Pacific Decadal Oscillation
Geophys. Res. Lett. Vol. 28 , No. 10 , p. 2029 (2000GL012429)
keywords: 4215 Oceanography: general; Climate and interannual variability (3309) 4522 Oceanography: physical; El Niño 9355 Information related to geographic region; Pacific Ocean
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Sengupta, Debasis ; Ravichandran, M. 2001
Oscillations of Bay of Bengal sea surface temperature during the 1998 summer monsoon
Geophys. Res. Lett. Vol. 28 , No. 10 , p. 2033 (2000GL012548)
keywords: 4227 Oceanography: general;Diurnal, seasonal, and annual cycles 4572 Oceanography: physical;Upper ocean processes
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Meyers, Steven D. ; Siegel, Eric M. ; Weisberg, Robert H. 2001
Observations of currents on the West Florida Shelf break
Geophys. Res. Lett. Vol. 28 , No. 10 , p. 2037 (2000GL012249)
keywords: 4219 Oceanography: general; Continental shelf processes 4223 Descriptive and regional oceanography 4512 Oceanography: physical; Currents
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Benestad, R. E. ; Sutton, R. T. ; Allen, M. R. ; Anderson, D. L. T. 2001
The influence of subseasonal wind variability on Tropical Instability Waves in the Pacific
Geophys. Res. Lett. Vol. 28 , No. 10 , p. 2041 (2000GL012563)
keywords: 4520 Oceanography: physical; Eddies and mesoscale processes 4544 Internal and inertial waves 4572 Upper ocean processes
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Rudnick, Daniel L. 2001
On the skewness of vorticity in the upper ocean
Geophys. Res. Lett. Vol. 28 , No. 10 , p. 2045 (2000GL012265)
keywords: 4520 Oceanography: physical; Eddies and mesoscale processes 4528 Fronts and jets 4572 Upper ocean processes
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Sloyan, Bernadette M. ; Schröter, J. 2001
Correlation of ocean mass and temperature fluxes among hydrographic sections in the southern oceans
Geophys. Res. Lett. Vol. 28 , No. 10 , p. 2049 (2000GL012459)
keywords: 4207 Oceanography: general; Arctic and Antarctic oceanography 4532 Oceanography: physical; General circulation 4536 Hydrography 4594 Instruments and techniques
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Vélez-Belchí P. ; Alvarez, A. ; Colet, P. ; Tintoré, J. ; Haney, R. L. 2001
Stochastic resonance in the thermohaline circulation
Geophys. Res. Lett. Vol. 28 , No. 10 , p. 2053 (2000GL012091)
keywords: 1620 Global Change; Climate dynamics (3309) 1635 Oceans (4203) 4215 Oceanography: general; Climate and interannual variability (3309)
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Mound, Jon E. ; Mitrovica, Jerry X. ; Milne, Glenn A. 2001
Sea-level change and true polar wander during the Late Cretaceous
Geophys. Res. Lett. Vol. 28 , No. 10 , p. 2057 (2000GL012369)
keywords: 1239 Geodesy and gravity; Rotational variations 1527 Geomagnetism and paleomagnetism; Paleomagnetism applied to geologic processes 4556 Oceanography: physical; Sea level variations 8159 Tectonophysics; Rheology--crust and lithosphere
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Timmermann, Axel 2001
Changes of ENSO Stability Due To Greenhouse Warming
Geophys. Res. Lett. Vol. 28 , No. 10 , p. 2061 (2001GL012879)
keywords: 1600 Global Change 1620 Climate dynamics (3309) 4522 Oceanography: physical; El Niño
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Mo, Kingtse C. ; Hakkinen, Sirpa 2001
Decadal Variations in the Tropical South Atlantic and Linkages to the Pacific
Geophys. Res. Lett. Vol. 28 , No. 10 , p. 2065 (2000GL012448)
keywords: 3339 Meteorology and atmospheric dynamics; Ocean/atmosphere interactions (0312, 4504) 4504 Oceanography: physical; Air/sea interactions (0312) 9325 Information related to geographic region; Atlantic Ocean
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Tourre, Yves M. ; Rajagopalan, Balaji ; Kushnir, Yochanan ; Barlow, Mathew ; White, Warren B. 2001
Patterns of Coherent Decadal and Interdecadal Climate Signals in the Pacific Basin during the 20^th Century
Geophys. Res. Lett. Vol. 28 , No. 10 , p. 2069 (2000GL012780)
keywords: 0312 Atmospheric composition and structure; Air/sea constituent fluxes (3339, 4504) 3339 Meteorology and atmospheric dynamics; Ocean/atmosphere interactions (0312, 4504) 4504 Oceanography: physical; Air/sea interactions (0312)
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Gong, Dao-Yi ; Wang, Shao-Wu ; Zhu, Jin-Hong 2001
East Asian winter monsoon and Arctic Oscillation
Geophys. Res. Lett. Vol. 28 , No. 10 , p. 2073 (2000GL012311)
keywords: 1625 Global Change; Geomorphology and weathering (1824, 1886) 3309 Meteorology and atmospheric dynamics;Climatology (1620) 3349 Polar meteorology
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Enfield, David B. ; Mestas-Nuñez, Alberto M. ; Trimble, Paul J. 2001
The Atlantic multidecadal oscillation and its relation to rainfall and river flows in the continental U.S.
Geophys. Res. Lett. Vol. 28 , No. 10 , p. 2077 (2000GL012745)
keywords: 1800 Hydrology 3339 Meteorology and atmospheric dynamics; Ocean/atmosphere interactions (0312, 4504) 3354 Precipitation (1854) 4215 Oceanography: general; Climate and interannual variability (3309)
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Delire, Christine ; Behling, Pat ; Coe, Michael ; Foley, Jonathan A ; Jacob, Robert ; Kutzbach, John ; Liu, Zhengyu ; Vavrus, Steve 2001
Simulated response of the atmosphere-ocean system to deforestation in the Indonesian Archipelago
Geophys. Res. Lett. Vol. 28 , No. 10 , p. 2081 (2000GLO11947)
keywords: 1620 Global Change; Climate dynamics (3309) 1635 Oceans (4203) 3322 Meteorology and atmospheric dynamics; Land/atmosphere interactions 3339 Ocean/atmosphere interactions (0312, 4504)
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Reale, O. ; Feudale, L. ; Turato, B. 2001
Evaporative moisture sources during a sequence of floods in the Mediterranean region
Geophys. Res. Lett. Vol. 28 , No. 10 , p. 2085 (2000GL012379)
keywords: 1854 Hydrology; Precipitation (3354) 3354 Meteorology and atmospheric dynamics; Precipitation (1854) 3364 Synoptic-scale meteorology
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Gallo, Kevin ; Tarpley, Dan ; Mitchell, Ken ; Csiszar, Ivan ; Owen, Timothy ; Reed, Brad 2001
Monthly fractional green vegetation cover associated with land cover classes of the conterminous USA
Geophys. Res. Lett. Vol. 28 , No. 10 , p. 2089 (2000GL011874)
keywords: 3322 Meteorology and atmospheric dynamics Land/atmosphere interactions 3360 Remote sensing
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Fer, Ilker ; Lemmin, Ulrich ; Thorpe, S. A. 2001
Cascading of water down the sloping sides of a deep lake in winter
Geophys. Res. Lett. Vol. 28 , No. 10 , p. 2093 (2000GL012599)
keywords: 1845 Hydrology; Limnology 3020 Marine geology and geophysics; Littoral processes 3314 Meteorology and atmospheric dynamics; Convective processes
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Ding, Z. L. ; Yu, Z. W. ; Yang, S. L. ; Sun, J. M. ; Xiong, S. F. ; Liu, T. S. 2001
Ceoval changes in grain size and sedimentation rate of eolian loess, the Chinese Loess Plateau
Geophys. Res. Lett. Vol. 28 , No. 10 , p. 2097 (2000GL006110)
keywords: 1645 Global Change; Solid Earth 3344 Meteorology and atmospheric dynamics; Paleoclimatology
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Johnson, Jeffrey R. ; Grundy, William M. 2001
Visible/Near-infrared Spectra and Two-Layer Modeling of Palagonite-Coated Basalts,
Geophys. Res. Lett. Vol. 28 , No. 10 , p. 2101 (2000GL012669)
keywords: 3934 Mineral physics; Optical, infrared, and Raman spectroscopy 5464 Planetology: solid surface planets; Remote sensing 6225 Planetology: Solar system objects (New field); Mars
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Meredith, Philip G. ; Knight, Kevin S. ; Boon, Stephen A. ; Wood, Ian G. 2001
The Microscopic Origin of Thermal Cracking in Rocks: An Investigation by Simultaneous Time-of-Flight Neutron Diffraction and Acoustic Emission Monitoring
Geophys. Res. Lett. Vol. 28 , No. 10 , p. 2105 (2000GL012470)
keywords: 3949 Mineral physics; Thermal expansivity 3954 X ray, neutron, and electron spectroscopy and diffraction 5104 Physical properties of rocks; Fracture and flow 5134 Thermal properties
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Lambert, Anthony ; Courtier, Nicholas ; Sasagawa, Glenn S. ; Klopping, Fred ; Winester, Daniel ; James, Thomas S. ; Liard, Jacques O. 2001
New Constraints on Laurentide Postglacial Rebound from Absolute Gravity Measurements
Geophys. Res. Lett. Vol. 28 , No. 10 , p. 2109 (2000GL012611)
keywords: 1200 Geodesy and gravity 1208 Crustal movements--intraplate (8110) 1236 Rheology of the lithosphere and mantle (8160) 1244 Standards and absolute measurements
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Biano, G. ; Chersich, M. ; Devoti, R. ; Luceri, V. ; Selden, M. 2001
Measurement of LAGEOS-2 Rotation by Satellite Laser Ranging Observations
Geophys. Res. Lett. Vol. 28 , No. 10 , p. 2113 (2000GL012435)
keywords: 1241 Geodesy and gravity; Satellite orbits
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Wright, Tim ; Parsons, Barry ; Fielding, Eric 2001
Measurement of interseismic strain accumulation across the North Anatolian Fault by satellite radar interferometry
Geophys. Res. Lett. Vol. 28 , No. 10 , p. 2117 (2000GL012850)
keywords: 1206 Geodesy and gravity; Crustal movements--interplate (8155) 1243 Space geodetic surveys 1294 Instruments and techniques
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D'Agostino, N. ; Giuliani, R. ; Mattone, M. ; Bonci, L. 2001
Active crustal extension in the central Apennines (Italy) inferred from GPS measurements in the interval 1994-1999
Geophys. Res. Lett. Vol. 28 , No. 10 , p. 2121 (2000GL012462)
keywords: 1243 Geodesy and gravity; Space geodetic surveys 7223 Seismology; Seismic hazard assessment and prediction 8107 Tectonophysics; Continental neotectonics 8109 Continental tectonics--extensional (0905)
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Williams, Charles A. ; McCaffrey, Robert 2001
Stress rates in the central Cascadia subduction zone inferred from an elastic plate model
Geophys. Res. Lett. Vol. 28 , No. 10 , p. 2125 (2000GL012623)
keywords: 3210 Mathematical geophysics (new field); Modeling 7223 Seismology; Seismic hazard assessment and prediction 8150 Tectonophysics; Plate boundary--general (3040) 8164 Stresses--crust and lithosphere
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Meltzer, Anne ; Christensen, Nikolas 2001
Nanga Parbat crustal anisotropy: Implications for interpretation of crustal velocity structure and shear-wave splitting
Geophys. Res. Lett. Vol. 28 , No. 10 , p. 2129 (2000GL012262)
keywords: 5100 Physical properties of rocks 5102 Acoustic properties 7203 Seismology; Body wave propagation 7205 Continental crust (1242)
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Manga, Michael 2001
Origin of postseismic streamflow changes inferred from baseflow recession and magnitude-distance relations
Geophys. Res. Lett. Vol. 28 , No. 10 , p. 2133 (2000GL012481)
keywords: 1829 Hydrology; Groundwater hydrology 1860 Runoff and streamflow 5114 Physical properties of rocks; Permeability and porosity 7212 Seismology; Earthquake ground motions and engineering
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Perfettini, Hugo ; Schmittbuhl, Jean ; Vilotte, Jean-Pierre 2001
Slip correlations on a creeping fault
Geophys. Res. Lett. Vol. 28 , No. 10 , p. 2137 (2000GL012343)
keywords: 5120 Physical properties of rocks; Plasticity, diffusion, and creep 7209 Seismology; Earthquake dynamics and mechanics 7260 Theory and modeling
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Highlights of This Issue

Geophysical Research Letters, May 15, 2001

Dust dynamics at Saturn

Howard and Horányi [1907] present new calculations of the stability loci for dust grain orbits about Saturn and make new predictions for observations of dust by Cassini. They calculate these loci for both dielectric and conducting grains, in prograde and retrograde orbits, with the plasma environment determining the sign of the charge. They report that among the possible types of halo orbits, the positive retrograde orbits with their relatively large velocities to the Cassini orbiter are most easily detected by the Cassini Cosmic Dust Analyzer.

Spacecraft measures asteroidal magnetic field

The irregular asteroid Braille (also known as 1992 KD) was discovered in May 1992. Deep Space 1 (DS1) performed a successful flyby at the asteroid in July 1999, passing Braille on the nightside with a relative velocity of 15 km/s and allowing, for the first time, a direct measurement of an asteroidal magnetic field. Richter et al. [1913] conclude that the measured field is simply the unperturbed dipole field of the asteroid and estimate the upper limit of Braille's magnetic moment to be about 2.1 X 1011 A-m2.

Iodine oxide: coast to troposphere

Hoffmann et al. [1949] perform laboratory experiments focusing on particle formation after photolysis of CH₂I₂ (diiodomethane) in the presence of ozone. They observe rapid new particle formation, composed purely of oxides of iodine, in the lower ppb-range of CH₂I₂. They suggest that the self-nucleation of iodine oxides provides an efficient source of natural condensable material in coastal environments.

Frieß et al. [1941] present ground-based zenith-sky measurements of Iodine Oxide (IO) in the Antarctic troposphere for 1999. They identify IO in the spectra throughout the year, where the values are somewhat higher in summer than in spring and autumn. From the analysis of the diurnal variation of the slant columns, the authors deduce that the bulk of the IO is situated in the lower troposphere with estimated mixing ratios of as much as 5-10 ppt.

Also in this issue, Allan et al. [1945] report on OIO (iodine dioxide) observations in the marine boundary layer at Cape Grim, Tasmania, for January 1999. Concentration of OIO was found to vary from less than 0.5 ppt to about 3 ppt, with the maximum concentration occurring after sunset. During the day, OIO is removed mainly by photochemistry with an uptake on aerosol accounting for the slower nighttime loss.

Laptev Sea impacts Arctic Ocean

The Laptev Sea's shallow shelf, characterized by high amounts of river runoff from the large Siberian river systems, is a key region for understanding global change processes. Changing wind patterns over the Laptev Sea in 1989 diverted Laptev Sea river water eastward and a significant salinification of the upper Eurasian basin began around this time. Using a coupled ice-ocean model, Johnson and Polyakov [2017] show that the 1990s' salinification in the Laptev Sea was, indeed, due to eastward diversion of river runoff and also to enhanced ice production and brine rejection. The salinity anomaly was then advected to the central Eurasian Basin. The replacement of fresh surface waters with more saline waters in the basin reduced vertical stratification and increased heat flux, releasing heat from the cold halocline layer to the upper layer of the basin.

Natural decadal-multidecadal fluctuations in the Pacific

Examining nearly one-century long (1900-1991) sea surface temperature (SST) and sea level pressure (SLP) records for the Pacific Ocean, Tourre et al. [2069] show that the low-frequency climate variability in the Pacific basin consists of two spatially coherent signals in covarying SST and SLP anomalies: an interdecadal signal (peaking within the 16 to 17-year period) and a decadal signal (peaking within the 10.8 and 11.9-year period) with distinct spatial evolutions. The authors report that the interdecadal signal is symmetric about the equator in the eastern Pacific and displays large SST and SLP anomalies in the midlatitudes. The decadal signal is a low-latitude phenomenon, with maxima about the equator. These natural decadal-multidecadal climatic modes may not only account for additional climatic variability beyond El Niño-Southern Oscillation (ENSO) and such phenomena but may also interact with and modulate ENSO characteristics.

AMO influences U.S. precipitation

Enfield et al. [2077] present results relating low frequency changes in atmospheric general circulation associated with the Atlantic Multidecadal Oscillation (AMO), a 65-80 year cycle in the North Atlantic SST field, and indexed with a ten-year running mean of SST anomalies in the ocean. The changes modulate the ENSO signal in the interior continental portions of the U.S: the likelihood of continental drought is higher when the AMO is in its positive/warm phase and is lower when the AMO is in its negative/cool phase. In the southeast U.S., however, rainfall and AMO are positively correlated.

Cover Caption

Halo orbit (red line) of tiny charged dust grain floating above Saturn's equatorial plane. These orbits are theoretically possible, owing to the combined influence of Saturn's gravity, magnetic dipole field, corotational electric field, and the centrifugal force (insert). They may be observed by the Cassini Orbiter, now en route to Saturn. Large Image (57kb)

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