西湖凹陷油气成藏的主控因素     

熊斌辉  张喜林  张锦伟  王春红  杨海长 《海洋地质译丛》2008,(2):14-24

西湖凹陷位于东海大陆架边缘，地壳为相对软弱的过渡壳。西湖凹陷中新世末以前属于萎缩型盆地，上新世伴随冲绳海槽的形成才成为扩张性盆地。受构造控制盆地萎缩期沉积有以下3个特点：第一，整体表现为海退；第二，沉积范围逐次减小；第三，泥岩百分比越来越低，盖层条件越来越差。平湖组存在区域盖层，钻遇断块气藏；花港组存在局部盖层，背斜充满度高，断背斜充满度低，断块未成藏；新近系盖层条件更差，断背斜亦未能成藏。由此可见保存条件是西湖凹陷油气成藏的主控因素，保存条件好的领域是西湖凹陷下一步勘探的方向。  相似文献   

利用机载GNSS反射信号反演海面风速的研究   总被引：2，自引：0，他引：2  

王迎强  严卫  符养  李萍 《海洋学报》2008,30(6):51-59

全球卫星导航定位系统的反射信号(GNSS-R)遥感技术作为一种新型的、低成本的、高机动性的海面微波遥感测风技术,与其他测风手段优势互补,可以增加测风手段的多样性,弥补局部测风手段不足的状况。研究了接收机在机载高度时,GPS反射信号功率理论模型四部分函数的性质,在此基础之上,数值模拟了机载高度下理论相关功率波形,基于海面风速对波形峰值与后沿的影响,提出了一种能够兼顾所有理论波形信息的二维插值风速反演方法。利用该方法,结合实测机载数据对海面风速进行反演,反演的风速均值与附近测站风速均值相差为1.4 m/s,与浮标数据相一致。  相似文献   

Hematological changes in white spot syndrome virus-infected shrimp, Fenneropenaeus chinensis (Osbeck)     

Shouming Feng  Wenbin Zhan  Jing Xing  Jun Li  Kai Yang  Jing Wang 《中国海洋大学学报(英文版)》2008,7(3):287-293

The pathological changes of hemocytes in the haemolymph and hepatopancreas were examined in experimentally and naturally WSSV (white spot syndrome virus) infected Fenneropenaeus chinensis. The results showed that the pathological manifestations of hemocytes were similar among moribund shrimps infected via injection, feeding and by nature. Firstly, the total hemocyte counts (THCs) in WSSV-infected shrimp were significantly lower than those in healthy shrimp. Secondly, necrotic, broken and disintegrated cells were often observed, and a typical hematolysis was present in the haemolymph smear of WSSV-infected shrimp. Thirdly, necrosis and typical apoptosis of hemocytes were detected with TEM in the peripheral haemolymph of WSSV-infected shrimp. Hyalinocytes and semi-granulocytes with masses of WSSVs in their nuclei often appeared, whereas no granular hemocytes with WSSV were found in the hepatopancreas of moribund infected shrimps. All our results supported that hemocytes were the main target cells of WSSV, and hyalinocytes and semigranular hemocytes seemed to be more favorable for WSSV infection in F. chinensis.  相似文献   

济南北部地热田地热地质特征浅析   总被引：1，自引：0，他引：1  

李常锁  杨磊  高卫新  王少娟 《山东国土资源》2008,24(4):35-39

济南北部地热田地热资源类型属于层状裂隙岩溶型,热源是北部齐河-广饶断裂的沟通导热,盖层是第四系、新近系、石炭-二叠系、侏罗系.可利用的、具有开发价值的热储层为奥陶系灰岩热储,该热储层顶板埋深在700～2500m左右,热储层厚度由南向北逐渐增大,单井涌水量2000m3/d左右,孔口水温一般在38～57℃,地热田东部地热水矿化度1.4～3.5g/L左右,西部5.1～7.2g/L左右,地热水中富含氟、锶、偏硅酸等微量元素,具腐蚀性,结垢性弱,具较好的开发利用价值.经计算奥陶系热储层单井可采资源量为7.3×105m3/a,合理井间距为5000m.  相似文献   

Redescription ofPontella species (Calanoida, Pontellidae) from Korean waters, with notes on their spatio-temporal distribution     

Hyeon Gyeong Jeong  Hae -Lip Suh  Yang Ho Yoon  Ho Young Soh 《Ocean Science Journal》2008,43(4):209-222

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Temporal trends of hydro‐climatic variables and runoff response to climatic variability and vegetation changes in the Yiluo River basin,China     

Qiang Liu  Zhifeng Yang  Baoshan Cui  Tao Sun 《水文研究》2009,23(21):3030-3039

The Yiluo River is the largest tributary for the middle and lower reaches of the Yellow River below Sanmenxia Dam. Changes of the hydrological processes in the Yiluo River basin, influenced by the climatic variability and human activities, can directly affect ecological integrity in the lower reach of the Yellow River. Understanding the impact of the climatic variability and human activities on the hydrological processes in the Yiluo River basin is especially important to maintain the ecosystem integrity and sustain the society development in the lower reach of the Yellow River basin. In this study, the temporal trends of annual precipitation, air temperature, reference evapotranspiration (ET₀) and runoff during 1961–2000 in the Yiluo River basin were explored by the Mann‐Kendall method (M‐K method), Yamamoto method and linear fitted model. The impacts of the climatic variability and vegetation changes on the annual runoff were discussed by the empirical model and simple water balance model and their contribution to change of annual runoff have been estimated. Results indicated that (i) significant upwards trend for air temperature and significant downwards trend both for precipitation and ET₀ were detected by the M‐K method at 95% confidence level. And the consistent trends were obtained by the linear fitted model; (ii) the abrupt change started from 1987 detected by the M‐K method and Yamamoto method, and so the annual runoff during 1961–2000 was divided into two periods: baseline period (1961–1986) and changeable period (1987–2000); and (iii) the vegetation changes were the main cause for change of annual runoff from baseline period to changeable period, and climatic variability contributed a little to the change of annual runoff of the Yiluo River. Copyright © 2009 John Wiley & Sons, Ltd.  相似文献   

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杨家亮  胡斌  王晓山  彭远黔  冉志杰  温超  刁桂苓 《大地测量与地球动力学》2009,29(1):15-19

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欧同庚  耿学贤  杨博雄 《大地测量与地球动力学》2009,29(2):149-151

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吕宠吾  杨江 《大地测量与地球动力学》2009,29(3):145-147

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郑作亚  党亚民  卢秀山  郭金运  阳凡林 《大地测量与地球动力学》2009,29(5):107-111

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