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Belskaya Irina N. Barucci Antonella M. Shkuratov Yurij G. 《Earth, Moon, and Planets》2003,92(1-4):201-206
Information on the surface structure of the Kuiper Belt objectscan be obtained from studies of their opposition brightening.Although KBOs are observed at a very limited phase angle rangethey represent a unique opportunity to study the backscatteringphenomenon down almost to zero phase angle. Preliminaryestimations of the opposition effect amplitude and width based oncomposite phase curves of four KBOs and two Centaurs showed theexistence of a very narrow opposition surge of about 0.1–0.2 mag at phase angles less than 0.1–0.2 deg. It may indicate a highporosity of the KBOs regoliths. Further observations are needed toconfirm this phenomenon. 相似文献
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正1 Introduction In the south of Eastern Transbaikalia in the border area with China and Mongolia,there are at least 300 saline without outlet lakes.They are confined to the semi-arid zone Daurian steppes with pronounced continental salinization processes and are mostly located on the bottoms of the intermountain basins.Their origin is related to evaporative concentration of fresh waters lakes filling. 相似文献
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We compute the characteristic parameters of the magneto-dipole radiation of a neutron star undergoing torsional seismic vibrations under the action of Lorentz restoring force about an axis of a dipolar magnetic field experiencing decay.After a brief outline of the general theoretical background of the model of a vibration-powered neutron star,we present numerical estimates of basic vibration and radiation characteristics,such as frequency,lifetime and luminosity,and investigate their time dependence on magn... 相似文献
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Eleonora P. Radionova Larisa A. Golovina Natalia Yu. Filippova Valery M. Trubikhin Sergey V. Popov Irina A. Goncharova Yulia V. Vernigorova Tatiana N. Pinchuk 《Central European Journal of Geosciences》2012,4(1):188-204
The stratigraphy of the Taman Peninsula is defined using the sections at Zelensky Hill ?? Panagia, Popov Kamen, Taman and Zheleznyi Rog. The stratigraphy is constructed from distribution of mollusks, foraminifers, nannofossils, diatoms, and organic-walled phytoplankton, as well as incorporating paleomagnetic data. The occurrence of oceanic diatom species in the Middle-Upper Sarmatian, Maeotian and Lower Pontian makes a direct correlation possible between the sections studied, the Mediterranean basin and oceanic zonation. The new data on planktonic and benthic biotic groups suggests a pulsating connection of the Eastern Paratethys with the open marine basins, especially during transitional intervals within constant environments. Comprehensive studies of the Chokrakian-Kimmerian microbiota provide evidence for several levels of marine microbiotic associations that are related to short-term marine invasions. The biotic and paleomagnetic data of the Taman Peninsula sections give a more comprehensive, but sometimes a controversial picture on the Eastern Paratethys history and the nature of its relationship with the adjacent marine basins. 相似文献
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陈树旺 邢德和 丁秋红 郑月娟 高飞 卞雄飞 张志斌 商翎 Antonina A.Zhukovskaya Irina V.Ershova Nadezhda A.Tomilovskaya 《地质与资源》2012,21(6):540-545
参照俄罗斯生态地质调查评价方法,结合辽宁铁岭地区资源与环境状况,增加了土壤侵蚀、土壤厚度及植被发育状况等相关调查内容,建立了基于“土壤、植被、水文及地质灾害发育程度等”评价指标的“生态地质综合评价法”.由此将工作区划分出5类生态地质景观,提出了相应的资源开发与环境保护建议. 相似文献
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Upscaling of elastic properties of anisotropic sedimentary rocks 总被引:1,自引:0,他引:1
Irina O. Bayuk Mike Ammerman Evgeni M. Chesnokov 《Geophysical Journal International》2008,172(2):842-860