地震呈混沌状态     

Scho.  CH 何慧敏 《地震地质译丛》1991,13(5):56-58

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球粒金是人工的还是次生的？     

张志良  肖学军 《地质地球化学》1990,(3):24-30

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青海省土地承载力的系统动力学研究   总被引：2，自引：0，他引：2  

杨晓鹏  张志良 《地理学与国土研究》1992,8(4):16-22

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大地震定标的重新评价     

Scho.  CH 魏淳 《世界地震译丛》1994,(5):75-78

笔者在１２年前曾经指出，正如正则模型所预期的那样，观测结果表明，大地震的滑动是以其长度而不是宽度来度量的。最近，Ｒｏｍａｎｏｗｉｃｚ（１９９２）提出，新近的资料表明也存在与此相反的情况，这就促使我不得不重新研究这一问题。笔者在本文中指出Ｒｏｍａｎｏｗｉｃｚ分析中的一个定义性漏洞，即她在曲线拟合中由小地震转换到小震时把矩Ｍ０视作自由变量，而这个参数即是可以独立定义的。笔者发现，当该参数独立确定时，新  相似文献   

Contamination of polychlorinated biphenyls (PCBs) in sediments from Kyeonggi Bay and nearby areas, Korea   总被引：9，自引：0，他引：9  

Lee KT  Tanabe S  Koh CH 《Marine pollution bulletin》2001,42(4):273-279

To elucidate the characteristic distribution and contamination of polychlorinated biphenyls (PCBs) in sediments, 63 sediments and five benthic organisms from Kyeonggi Bay, Namyang Bay and Lake Shihwa, West coast of Korea, were analysed. Characterization of PCBs distribution in sediments was conducted by correlation between PCBs concentrations and environmental parameters, comparison of contamination level and composition of PCBs homologs between Kanechlor mixture (KC-mix) and sediments. The residues of PCBs in sediments were correlated with total organic carbon (TOC) and particulate organic carbon (POC) contents, not with mud contents and grain size distributions. Elevated concentrations of T-PCBs were found in sediments from Incheon North Harbor (INH) in Kyeonggi Bay. T-PCBs concentrations were decreased with distance increase from inner site of INH. The residues of T-PCBs in sediments from Namyang Bay were either non-detectable or near to detection limit. The contamination by PCBs in sediments from Lake Shihwa was also low. The PCBs congener profiles in INH were similar to those of KC-mix, while those in less contaminated sites showed relatively high percentage of lower chlorinated biphenyls. Sites K18 (580 ng/g or 48 ug/g-OC dry wt) and K19 (330 ng/g or 38 ug/g-OC dry wt) within INH exceeded the sediment quality criteria (SQC) (16 micrograms/g-OC as a KC-mix) derived from equilibrium partitioning (EqP) approach.  相似文献   

太行山东麓现代泥石流特征   总被引：2，自引：0，他引：2  

张志良  何培元 《地质论评》1981,27(6):514-519

1963年华北降了历史上罕见的特大暴雨,其特点是雨量大、时间长、范围广。在山区产生了大小不等的泥石流堆积。查清这些堆积物的结构特征、分布规律以及形成因素具有一定的实践和  相似文献   

The effects of metal distribution and anthropogenic effluents on the benthic environment of Gwangyang Bay, Korea     

Hyun S  Lee T  Lee CH  Park YH 《Marine pollution bulletin》2006,52(1):113-120

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格陵兰南部冰盖的高程变化     

Davis  CH 陈秀澄 《海洋地质前沿》1998,(7):12-14

格陵兰南部冰盖的高程变化ＣｕｒｔＨ．Ｄａｖｉｓ等了解极地冰盖现今的状况是确定其对海平面上升的作用和预测其对气候变化的响应的关键。数十个潮汐观测数据的近期估算表明在过去近一个世纪全球性海平面上升了１０～２０ｃｍ。然而,不能确定的是极地冰盖对当时海平面上...  相似文献