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991.
Juan José Hernández-Rey 《Astrophysics and Space Science》2005,297(1-4):257-267
Whilst the number of observed astrophysical sources of γ-rays is now moderately high, only three astrophysical objects have
been studied with neutrinos, namely the Sun, a supernova (SN1987A) and the Earth (its atmosphere). However, astro-neutrinos
may give a new boost to astrophysics, similar to the impressive progress provided during the last decades by γ-rays. The ANTARES
collaboration aims to build a large neutrino telescope under the Mediterranean Sea at a depth of 2500 m. To reach this goal,
a remarkable effort of R&D has been performed in recent years that has culminated in the deployment, connection and operation
of two prototype strings. The final detector will be composed of 12 strings and will be ready by 2007. 相似文献
992.
993.
利用地下水长观资料求解含水层参数 总被引:1,自引:0,他引:1
以银川平原灌区内的地下水动态观测资料,气象资料和灌溉试验资料为基础,分析了灌区内地下水的时空分布规律,并定量地确定了含水层参数:给水度度μ、潜水临界埋深△0、潜水蒸发系数C,采用此方法还可以推求降雨入渗补给系数a和灌溉回归系数等参数. 相似文献
994.
给出了BCK代-数上(λ1,λ2)-广义模糊关联理想,模糊关联理想的概念并在此定义下推出了它们的一些重要性质。 相似文献
995.
Araceli Zamora-Camacho Juan Manuel Espíndola Gabriel Reyes-Dávila 《Pure and Applied Geophysics》2007,164(1):39-52
Volcán de Colima, the most active volcano in Mexico, had a climactic episode on 20 November, 1998. On this date, a dome formed
on the small summit crater during the previous few days, collapsed generating block-and-ash flows. The event was preceded
by almost twelve months of seismic activity, which continued afterwards for several more months. We analyzed the main seismic
activity, which occurred from 20 March, 1998 to 31 March, 1999. The seismicity was dominated by volcano-tectonic earthquakes
before the climax, and subsequently by hybrid and long-period earthquakes. We determined the frequency of events for the entire
period, and located most of the volcano-tectonic events. To assess the possibility that these earthquakes were generated by
the same source, they were tested for their similitude through cross correlation in the time domain. Six groups of similar
events, or earthquake families, were generated. The members of these families appeared before the 20 November event, apparently
ceasing afterwards. We examined the location of the families' events with respect to an existing gravity model in which an
anomalous body of negative density contrast suggests the presence of the magma chamber. Most of the family events occur on
top of the anomalous body, which suggests they were associated with the passage of magma through the feeding conduits of the
volcano. 相似文献
996.
深圳LAP-3000型风廓线雷达系统及应用 总被引:1,自引:0,他引:1
介绍风廓线雷达的历史、LAP-3000型风廓线雷达的基本原理以及深圳市LAP-3000型风廓线雷达的数据存贮格式、风廓线雷达产品的显示等内容;并给出了几种典型风场在风廓线上的反映及对一次冷空气过程的分析。 相似文献
997.
Juan Morales Avto Goguitchaichvili Luis M. Alva-Valdivia Jaime Urrutia-Fucugauchi 《Comptes Rendus Geoscience》2006,338(8):507-513
Twenty years after Tanaka and Kono's pioneering contribution (Tanaka and Kono, 1984), we give some new details on the effect of applied field strength during Thellier paleointensity experiments. Special attention is paid to the relation of magnitude of laboratory field and Coe's quality factors (Coe et al., 1978). Full thermoremanent magnetizations were imparted on natural samples containing low-Ti titanomagnetites of pseudo-single domain structure in a 40-μT magnetic field from 600?°C to room temperature. The samples were subjected to the routine Thellier procedure using a wide range of applied laboratory fields. Results indicate that values of laboratory fields may be accurately reproduced within 2% of standard error. The quality factors, however, decrease when the magnitude of ‘ancient’ field does not match to applied laboratory fields. To cite this article: J. Morales et al., C. R. Geoscience 338 (2006). 相似文献
998.
999.
1000.
桂林市气象网络语音监控系统 总被引:3,自引:1,他引:3
介绍了《桂林市气象网络语音监控系统》五大模块的主要功能和某些模块在编程中遇到的技术难题以及解决的办法。 相似文献