Goro Komatsu

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Recent exploration has revealed extensive geological evidence for a water-rich past in the shallow subsurface of Mars. Images of in situ and loose accumulations of abundant, haematite-rich spherical balls from the Mars Exploration Rover 'Opportunity' landing site at Meridiani Planum bear a striking resemblance to diagenetic (post-depositional),(More)
From 1960 to 1980 at Memorial Hospital Medical Center--Miller Children's Hospital, the mean birth weight for term-size neonates increased from 3381 to 3458 g inspite of increases in ethnic groups known to have smaller neonates. More significantly, the incidence of macrosomic neonates (birth weight greater than 4000 g) increased from 7.0 to 10.7%. Because of(More)
Well-exposed Jurassic Navajo Sandstone iron oxide concretions preserve important diagenetic records of groundwater flow and water–rock interactions. Field relationships, precipitation patterns, and geometries of the Navajo concretions provide the basis for input parameters in numerical computer simulations and laboratory chemical bench tests. Although field(More)
Two terrestrial environments that have been proposed as analogs for the iron oxide precipitation in the Meridiani Planum region of Mars include the Rio Tinto precipitates and southern Utah marble concretions. Samples of two typical Utah iron oxide concretions and iron oxide precipitates in contact with biofilms from Rio Tinto have been studied to determine(More)
Kinetic studies were carried out in 15 very low birth weight (VLBW) infants during three courses of gentamicin (G) therapy for suspected sepsis. All received two courses but only 6 required a third course. G dosage was 2.0 +/- 0.2 mg/kg/24 h for the first and second course and 2.5 mg/kg/12 h for the third course. G dosage was adjusted to maintain serum peak(More)
We prove Gaussian estimates from above of the fundamental solutions to a class of ultraparabolic equations. These estimates are independent of the modulus of continuity of the coefficients and generalize the classical upper bounds by Aronson for uniformly parabolic equations.  2003 Elsevier Science (USA). All rights reserved.
PLANETARY SURFACE/SUBSURFACE RECONNAISSANCE FOR LIFE W. Fink, J.M. Dohm, M.A. Tarbell, T.M. Hare, V.R. Baker, D. Schulze-Makuch, R. Furfaro, A.G. Fairén, T.P.A. Ferré, H. Miyamoto, G. Komatsu, W.C. Mahaney, California Institute of Technology, Visual and Autonomous Exploration Systems Research Laboratory, Division of Physics, Mathematics and Astronomy, Mail(More)
It has been proposed that ~3.4 billion years ago an ocean fed by enormous catastrophic floods covered most of the Martian northern lowlands. However, a persistent problem with this hypothesis is the lack of definitive paleoshoreline features. Here, based on geomorphic and thermal image mapping in the circum-Chryse and northwestern Arabia Terra regions of(More)
This paper presents the Radar for Icy Moon Exploration (RIME) that is a fundamental payload in the Jupiter Icy Moon Explorer (JUICE) mission of the European Space Agency (ESA). RIME is a radar sounder aimed to study the subsurface of Jupiter’s icy moons Ganymede, Europa and Callisto. The paper illustrates the main goals of RIME, its architecture and(More)