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您的检索式：作者名="Ruichun ZHOU"
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| 1 | Mesoproterozoic to Paleozoic Nd isotope stratigraphy of the South China continental nucleus and its geological significance显示文摘The Yangtze continental nucleus in South China is situated in the Huangling-Shennongjia area in western Hubei Province.It comprises the early Precambrian crystalline basement and generally successive Proterozoic to Phanerozoic sedimentary covers.This paper reports a comprehensive Nd isotope study of fine-grained sedimentary rocks from the regional Mesoproterozoic to early Paleozoic strata.The Nd model ages display a V-shaped variation from ~2.5-2.8 Ga during the late Mesoproterozoic through ~1.5-1.7 Ga during the Neoproterozoic Nanhua Period to ~1.8-2.1 Ga during the Paleozoic Ordovician,with corresponding Nd (t) ranges of 11 to 14,1.1 to 5.3,and 7.9 to 9.9,respectively.This evolutionary trend broadly resembles those documented in the sedimentary strata along the southeastern margin of the Yangtze Craton and within the Jiangnan orogenic belt,indicating that the whole South China block underwent a mantle-input related tectono-magmatic event at ~0.8 Ga or earlier.However,the Huangling-Shennongjia area is discriminated from the other two regions by highly variable model ages (~1.5-2.7 Ga) and Nd (t) values (1.38-12.0) of the early Mesoproterozoic strata.Combined with the Archean model ages of the late Mesoproterozoic strata,it is suggested that the Mesoproterozoic sedimentary provenance of the Yangtze continental nucleus was distinct from that of the southeastern Yangtze Craton,likely indicative of an intervening aulacogen (or rift zone) or oceanic basin.In addition,the high comparability in Neoproterozoic to Paleozoic Nd isotope stratigraphy between the Yangtze Craton and the Jiangnan orogenic belt infers that the whole South China block had shared the same sedimentary basin and provenance since the Yangtze-Cathaysia welding at ~0.9 Ga.Thus,it is proposed that the Yangtze Craton had comprised a collage of micro-continents during the pre-Neoproterozoic until the Rodinia assemblage when the primitive South China block was formed. | BAI Xiao LING WenLi DUAN RuiChun QIU XiaoFei LIU ChengXin KUANG Hua GAO YongJuan ZHOU Lian CHEN ZiWan LU Shah-Song | 2011 | Science China Earth Sciences2011，54，11： | 8 |
| 2 | Cache and consis-tency in NoSQL显示文摘 | Xiang Peng Hou Ruichun Zhou Zhiming | 2010 | Computer Science and Information Tech- nology2010，6，3： | 1 |
| 3 | Whistle signal variations among three Indo-Pacific humpback dolphin populations in the South China Sea:a combined effect of the Qiongzhou Strait’s geographical barrier function and local ambient noise?显示文摘Geographic variations in the dolphin whistles could be useful in assessing association and isolation among populations.Whistle of free-ranging Indo-Pacific humpback dolphins(Sousa chinensis)among the Pearl River Estuary(PRE),Leizhou Bei(LZB)and Sanniang Bay(SNB)populations were investigated.A total of 2850 whistles with legible fundamental contour were extracted and 15 acoustic parameters were measured.Contrary to SNB,PRE and LZB had the same relative proportion of tonal type compositions with flat and sine representing the most frequent types.The generalized linear model analysis showed significant acoustic difference among populations and tonal types.All frequency parameters in SNB were significantly higher than those in PRE and LZB,where no significant variation was observed in most of the parameters either at the population level or within each tonal type.Canonical discriminant functions analysis showed a smaller difference between PRE and LZB than between PRE and SNB and between LZB and SNB.Compared with previous recordings,recent recordings demonstrated a consistent pattern of becoming higher in whistle frequency parameters in both LZB and SNB populations,suggesting that noise pollution in LZB and SNB increasing with time according to the acoustic niche hypothesis.Dolphin whistle’s geographic variations could be shaped by the combined function of the geographical barrier function of the Qiongzhou strait and local ambient noise.Considering the isolated condition and the relatively smaller population size of the humpback dolphin in the SNB,more effective and proactive conservation actions should be taken to prevent the extinction of small populations. | Jing YUAN Zhitao WANG Pengxiang DUAN Yousheng XIAO Hongke ZHANG Zhixiong HUANG Ruichun ZHOU Hua WEN Kexiong WANG Ding WANG | 2021 | Integrative Zoology2021，16，4： | 0 |
| 4 | Mechanism of deformation around northern Hejin,China,observed by InSAR显示文摘Interferometric synthetic aperture radar(InSAR)images reveal deformation around northern Hejin,Shanxi Province.The small baseline subset(SBAS)approach for InSAR-derived deformation indicates that the observed deformation pattern can be characterized by the sum of two phenomena:background subsidence from December 2003 to February 2009 with a cumulative displacement of approximately 5 cm and uplift from February 2009 to November 2010 with a cumulative displacement of approximately 2.5 cm.Deformation modeling indicates that the local deformation was caused by the closing and opening of a sill beneath northern Hejin.The modeled sill which is approximately 5 km long,2 km wide,is centered at 1.5 km depth.The deformation was caused by the withdrawal and influx of subsurface water. | Ji Lingyun Liu Liwei Li Ning Liu Ruichun Zhou Cong | 2013 | Geodesy and Geodynamics2013，4，4： | 0 |
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