41,881 to 41,890 of 42,221 Results
Jan 1, 1993
Pagani, L.; Langer, W. D.; Castets, S., 1993, "Detection of the Molecular Oxygen Isotopomer ^(16)O^(18)O in Interstellar Clouds", https://hdl.handle.net/2014/34965, Astronomy and Astrophysics, JPL Open Repository
We report the first detection of molecular oxygen in interstellar clouds by observation |
Jan 1, 1993
Halpern, D.; Wentz, F., 1993, "['A 1987 - 1993 Composite SSMI Surface Wind Speed Data Set Created From Two Satellites', 'Geophysics, Oceanography']", https://hdl.handle.net/2014/35805, ['EOS, Transaction of the American Geophysical Union', 'American Geophysical Union', 'San Francisco'], JPL Open Repository
Development of decade-long time series of global surface wind measurements for studies ofseasonal-to-interannual climate variability presents unique challenges for space- borne instrumentationbecause of the necessity to combine data sets of 3- to 5-year lifetimes. Before the firs... |
Jan 1, 1993
Israelsson, U. E.; Strayer, D. M.; Chui, T. C. P.; Larson, M.; Duncan, R. V., 1993, "Dynamic Measurements Near the Lambda-point in a Low-gravity Simulator on the Ground", https://hdl.handle.net/2014/35210, ['Physica B', 'LT-20 Low Temperature Physics Conference', 'Eugene, Oregon'], JPL Open Repository
The properties of liquid helium very near the lambda-transition in the presence of a heat current has received recent theoretical and experimental attention. In this regime, gravity induced pressure effects place severe constraints on the types of experiments that can be performe... |
Jan 1, 1993
Jones, D. L.; Lestrade, J-F.; Preston, R. A.; Phillips, R. B., 1993, "Prospects for VLBI Detection of Planets", https://hdl.handle.net/2014/35497, ['SETI Institute', 'Progress in the Search for Extraterrestrial Life', 'U.C.S.C.'], JPL Open Repository
Astrometric VLBI observations of radio stars are being made to connect the Hipparcos star catalog to the extragalactic radio reference frame. Typically, the antennas are moved between a star and a strong, compact reference source a few degrees away every 2-3 minutes. After correl... |
Jan 1, 1993
Imel, D., 1993, "Evaluation of the TOPEX Dual-Frequency Ionosphere Correction", https://hdl.handle.net/2014/36534, Journal Geophysical Research, JPL Open Repository
I examine the accuracy of the TOPEX ionosphere correction; its dependence on ocean and satellite parameters is less than 1 cm. |
Jan 1, 1993
Ross, R. Jr.; Wen, L.; Mon, G., 1993, "Solder Joint Creep and Stress Relaxation Dependence on Construction and Environmental-Stress Parameters", https://hdl.handle.net/2014/35792, JPL Open Repository
This paper presents the results of studies that provide an overview of expected sensitivities to cycle rate, temperature, lead stiffness, and strain-cycle depth. |
Jan 1, 1993
Gross, R. S.; Marcus, S. L.; Dickey, J. O., 1993, "Determination of the Excess Length-of-Day Since 1630", https://hdl.handle.net/2014/35000, ['EOS, Transactions of the AGU', 'American Geophysical Union: Geophysics', 'Baltimore, MD'], JPL Open Repository
The Kalman Earth Orientation Filter (KEOF) is used at JPL to combine independent observations of the Earth's rotation parameters, producing smoothed, interpolated estimates of polar motion (PM) and UT1-TAI, as well as estimates of their excitation functions such as the length-of-... |
Jan 1, 1993
Guinn, J. R.; Jee, J.; Lindqwister, U.; Starr, D., 1993, "TOPEX/POSEIDON GPS Demonstration Experiment Data", https://hdl.handle.net/2014/35875, ['EOS', 'American Geophysical Union: 1993 Fall Meeting', 'San Francisco, CA'], JPL Open Repository
Global Positioning Satellite (GPS) measurements obtained from the on-board TOPEX/POSEIDON demonstration flight receiver and a global network of ground receivers are available from the GPS Data Handling Facility (GDHF) archive. Ground receiver observations are derived from a six s... |
Jan 1, 1993
Siegel, P. H.; Mehdi, I.; Dengler, R. J.; Oswald, J. E.; Pease, A.; Crowe, T. W.; Bishop, W.; Li, F.; Mattauch, R. J.; Weinreb, S.; East, J.; Lee, T., 1993, "Heterodyne Radiometer Development for the Earth Observing System Microwave Limb Sounder", https://hdl.handle.net/2014/34802, Los Angeles, California, USA, JPL Open Repository
The gradual depletion of the Earth's stratospheric ozone and the regular appearance of deep ozone 'hole' over the polar regions has dramatic ramifications for our planet |
Jan 1, 1993
Gunapala, S. D.; Liu, J. K.; Lin, T. L.; Park, J. S., 1993, "Very Long Wavelength Intersubband Infrared Hot Electron Transistor", https://hdl.handle.net/2014/36269, ['Japanese Journal of Applied Physics', 'Solid State Devices and Materials', 'Chiban, Japan'], JPL Open Repository
We have demonstrated the first very long wavelength (16 micrometers) infrared hot electron transistor (IHET). This device utilizes a bound to continuum GaAs/A1_xGa_(1- x)As (X=0.11) quantum well infrared photodetector (QWIP) as a photosensitive emitter, a wide quantum well as a b... |