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Schwartz R.A. Csillaghy A. Tolbert A.K. Hurford G.J. Mc Tiernan J. Zarro D. 《Solar physics》2002,210(1-2):165-191
The Reuven Ramaty High-Energy Solar Spectroscopic Imager (RHESSI) performs imaging spectroscopy of the Sun with high spatial
and spectral resolution from 3 keV to 17 MeV using indirect Fourier-transform techniques. We review the rationale behind the
RHESSI data analysis software, and explain the underlying structure of the software tools. Our goal was to make the large
data set available within weeks after the RHESSI launch, and to make it possible for any member of the scientific community
to analyze it easily. This paper describes the requirements for the software and explores our decisions to use the SolarSoftWare
and Interactive Data Language programming packages, to support both Windows and Unix platforms, and to use object-oriented
programming. We also describe how the data are rapidly disseminated and how ancillary data sets are used to enhance the RHESSI
science. Finally, we give a schematic overview of some of the data flow through the high-level analysis tools. More information
on the data and analysis procedures can be found at the RHESSI Data Center website, http://hesperia.gsfc.nasa.gov/rhessidatacenter.
Supplementary material to this paper is available in electronic form at http://dx.doi.org/10.1023/A:1022444531435 相似文献
2.
M. Tiernan L. Roth T. W. Thompson C. Elachi W. E. Brown Jr. 《Earth, Moon, and Planets》1976,15(1-2):155-163
Lunar position differences between thirteen lunar craters in Mare Serenitatis were computed from VHF radar-imagery obtained by the Lunar Sounder instrument flown on the Apollo 17 Command Module. The radar-derived position differences agree with those obtained by conventional photogrammetric reductions of Apollo metric photography. This demonstrates the feasibility of using the Apollo Lunar Sounder data to determine the positions of lunar features along the Apollo 17 orbital tracks. This will be particularly useful for western limb and farside areas, where no Apollo metric camera pictures are available.This paper presents the results of one phase of research carried out at the Jet Propulsion Laboratory, California Institute of Technology, under Contract No. NAS 7-100, sponsored by the National Aeronautics and Space Administration. 相似文献
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Blake Sarah Henry Tiernan Moore John Paul Murray John Campanyà Joan Muller Mark R. Jones Alan G. Rath Volker Walsh John 《Hydrogeology Journal》2021,29(8):2595-2611
A hydrogeological conceptual model of the source, circulation pathways and temporal variation of a low-enthalpy thermal spring in a fractured limestone setting is derived from a multidisciplinary approach. St. Gorman’s Well is a thermal spring in east-central Ireland with a complex and variable temperature profile (maximum of 21.8 °C). Geophysical data from a three-dimensional(3D)audio-magnetotelluric(AMT) survey are combined with time-lapse hydrogeological data and information from a previously published hydrochemical analysis to investigate the operation of this intriguing hydrothermal system. Hydrochemical analysis and time-lapse measurements suggest that the thermal waters flow within the fractured limestones of the Carboniferous Dublin Basin at all times but display variability in discharge and temperature. The 3D electrical resistivity model of the subsurface revealed two prominent structures: (1) a NW-aligned faulted contact between two limestone lithologies; and (2) a dissolutionally enhanced, N-aligned, fault of probable Cenozoic age. The intersection of these two structures, which has allowed for karstification of the limestone bedrock, has created conduits facilitating the operation of relatively deep hydrothermal circulation (likely estimated depths between 240 and 1,000 m) within the limestone succession of the Dublin Basin. The results of this study support a hypothesis that the maximum temperature and simultaneous increased discharge observed at St. Gorman’s Well each winter is the result of rapid infiltration, heating and recirculation of meteoric waters within a structurally controlled hydrothermal circulation system.
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C. Elachi M. Kobrick L. Roth M. Tiernan W. E. Brown Jr. 《Earth, Moon, and Planets》1976,15(1-2):119-131
The Apollo 17 ALSE VHF radar provided imagery and continuous profiling data around the Moon during two revolutions. The imagery data are used to derive depth and diameter measurements of small craters (diameter <30 km). The profiling data are used to study the topography of a few large craters: the bulged floors in Hevelius, Neper, and Aitken; central peaks in Neper and Buisson; and the depressed floor of Maraldi. The same data provided accurate (better than 25 m) profiles of Mare Crisium and Mare Serenitatis. 相似文献
5.
Excitation functions for collision-induced dissociation reactions of CO 3? and NO3? to give O? and the corresponding neutral species have been studied using an in-line tandem mass spectrometer. When these ions were prepared from certain gaseous mixtures, larger cross-sections and lower thresholds were observed for the dissociation processes than those found for the same ions in their apparent ground states. These observations suggest the existence of long-lived excited states of CO3?1 and NO3?1. The heats of formation of these excited ionic states were determined to be ?4.8 ± 0.1 and ?0.3 ± 0.2 eV for CO3?1 and NO3?1, respectively. Possible implications of these findings with respect to the D -region negative ion reaction scheme are discussed. 相似文献
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By changing a dimensionless calculation to a dimensional one, introducing a more accurate bremsstrahlung cross section, and using a more reasonable fitting energy range, we have recalculated the hard X-ray bremsstrahlung produced by a beam of power-law electrons with a lower energy cutoff (E
c). The method to deduce E
c from the hard X-ray spectral observations has therefore been refined in comparison with our previous one. The universality of this method has been clarified and discussed. We have applied this improved method to the 54 BATSE/Compton Gamma Ray Observatory (CGRO) hard X-ray events. It was found that about 44% of sample hard X-ray spectra can be directly explained by a beam of power-law electrons with a lower energy cutoff. The value of E
c, varying from 45 keV to 97 keV, is on average 60 keV. Another 44% of sample hard X-ray spectra might be explained by a beam of power-law electrons with the energy cutoff lower than 45 keV, which is however beyond the availability of BATSE/CGRO. Still another 11% sample hard X-ray spectra cannot be explained by a beam of power-law electrons with a lower energy cutoff. These results, based on the lower energy resolution data, however, should be compared in the future with that based on a higher energy resolution data, like the data from HESSI. 相似文献
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The Conway granite of New Hampshire is a highly radioactive intrusive into which a 1-km deep borehole was drilled and continuously cored. The formation is composed of two major granitic units, the Osceola and the Conway; and it is cut by three lamprophyre dikes. The suite of rocks used in this paper contained eight granitic and two lamprophyre samples on which acoustic and strain measurements were performed over the pressure range of 1 atm. to 0.4 GPa. The Vp data were subjected to cluster analyses to determine what, if any, similarities in pressure-dependence existed among the samples. Three distinct similarity groupings were found: the lamprophyre dike rocks and two groups each of which contains samples from both granitic units. These groupings by Vp behavior were also found to correlate exactly with sample similarity groupings formed by dynamic and static moduli data, crack spectra, and rock texture. Such sample similarities in the functional forms of the pressure-dependence were found not to correlate with mineral modes nor with original in situ depth, but rather with grain size and the degree to which the mineral phases were homogeneously mixed. A consideration of the results suggests that for these rocks, grain size and mineral phase homogeneity exerted a dominant influence on crack population formation. Further, it appears that the exhumation and coring of these samples may have intensified the amount of cracking over that in situ but it did not necessarily introduce any individual distinct crack populations. 相似文献
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