Metamorphism of cordierite gneisses from the Bangalore region of the Indian Archean

Mineral compositions from cordierite-bearing metasedimentary enclaves adjacent to the Closepet granite in the Bangalore region of the South Indian Craton indicate peak metamorphism in the range 4.5–5.0 kb, 690–730°C. P_H2O is found to decrease towards the south and those assemblages which lie south of the charnockite line are formed under conditions of P_H2O < 0.3 P_total. 250 km north Bangalore, andalusite-bearing assemblages from the northern margin of the Closepet granite indicate peak metamorphic conditions in the range 2.6–3.8 kb, 520–620°C. The inferred piezotacrmic array is strongly convex towards the temperature axis and may represent a transient geotherm in the upper crust related to the emplacement of the Closepet granite or to volatile activity along the margins of the granite.     

Chinese Earth Science at Its Turning Point

Since 2010, China has become the second biggest publisher of scientific research papers in the world, but remains far behind the global leadership with regards to the ability of creative innovation. Just like its economy, Chinese science is at a turning point, and the key is to avoid the “Middle-income trap”. Instead of blindly going after quantity of SCI publications, Earth science in China is to address major scientific problems and to perform transition to a new level of innovative researches. This is a written speech to the 4^th Conference on Earth System Science,Shanghai.     

试用地球系统科学观解读2004年印度洋地震海啸

2004年印度洋地震海啸是本世纪初全球发生的最为惨重的自然灾害.这次地震海啸涉及地球的岩石圈、水圈、大气圈和生物圈,甚至还有地外星球和月球的作用,造成能量与物质之间的相互转化与传递,说明地球是一个完整的统一整体.因此,对地震海啸等自然灾害必须采用地球系统科学观进行分析和研究,找出彼此之间的相互关系、形成机制和演化规律,并用信息化、全球化和可持续发展的地球科学观来研究和防御地震海啸.     

Seismic microzonation of Bangalore,India

In the present study, an attempt has been made to evaluate the seismic hazard considering local site effects by carrying out detailed geotechnical and geophysical site characterization in Bangalore, India to develop microzonation maps. An area of 220 km², encompassing Bangalore Mahanagara Palike (BMP) has been chosen as the study area. Seismic hazard analysis and microzonation of Bangalore are addressed in three parts: in the first part, estimation of seismic hazard is done using seismotectonic and geological information. Second part deals with site characterization using geotechnical and shallow geophysical techniques. In the last part, local site effects are assessed by carrying out one-dimensional (1-D) ground response analysis (using the program SHAKE2000) using both standard penetration test (SPT) data and shear wave velocity data from multichannel analysis of surface wave (MASW) survey. Further, field experiments using microtremor studies have also been carried out for evaluation of predominant frequency of the soil columns. The same has been assessed using 1-D ground response analysis and compared with microtremor results. Further, the Seed and Idriss simplified approach has been adopted to evaluate the soil liquefaction susceptibility and liquefaction resistance assessment. Microzonation maps have been prepared with a scale of 1:20,000. The detailed methodology, along with experimental details, collated data, results and maps are presented in this paper.     

IODP计划和地球科学学术界

国际综合大洋钻探计划(IODP)预定从2003年10月开始(即美国2003年财政年度开始之时)。从美国2006年财政年度开始,日本将提供立管科学钻探船,而自美国2004年财政年度起,美国将提供非立管科学钻探船。这两个钻探平台将构成IODP的核心技术支撑。美国和日本将以“领导机构”(leadagency)的身份支持这项计划,并在IODP中享有平等的合作伙伴关系和责任。在上述两个钻探平台均无法涉足的地区,将使用由美国和日本之外的其他IODP成员国提供的特殊使命钻探平台(MSP)。IODP的科学主题和目标已在IODP初始科学计划书(即ISP:由IWG支持办公…     

Scope of Earth Science Frontiers

<正>Earth Science Frontiers is a bi-monthly publication in Chinese with English abstracts for most papers; a few articles are published entirely in English. It is a medium for the publication of original and forefront research and high quality reviews covering recent advances in all fields of Earth Sciences. Each issue is devoted to a single topic and edited by an authority in that field.     

文化视角下的地球科学

从文化视角来审视地球科学, 或将地球科学作为一种文化现象来研究, 地球科学至少包含三方面的内容: 一是地学研究方法或思维逻辑, 即“真”的问题; 二是人地关系或地学的价值理念, 即“善”的问题; 三是地球演化的平衡或人与地球的和谐, 即“美”的问题.文化视角下的地球科学是由“真”、“善”、“美”三者构成的统一体系.      

Scope of Earth Science Frontiers

Earth Science Frontiers is a bi-monthly publication in Chinese with English abstracts for most papers; a few articles are published entirely in English. It is a medium for the publication of original and forefront research and high quality reviews covering recent advances in all fields of Earth Sciences. Each issue is devoted to a single topic and edited by an authority in that field.     

Scope of Earth Science Frontiers

Earth Science Frontiersis a bi-monthly publication in Chinesewith English abstracts for most papers ;a few articles are publishedentirelyin English.It is a mediumfor the publication of original andforefront research and high quality reviews covering recent advancesin all fields of Earth Sciences .Eachissue is devoted to a single topicand edited by an authorityin that field .Scope of Earth Science Frontiers…     

Scope of Earth Science Frontiers

Earth Science Frontiers is a bi-monthly publication in Chinese with English abstracts for most papers; a few articles are published entirely in English. It is a medium for the publication of original and forefront research and high quality reviews covering recent advances in all fields of Earth Sciences. Each issue is devoted to a single topic and edited by an authority in that field.     

Scope of Earth Science Frontiers

Earth Science Frontiersis a bi-monthly publication in Chinesewith English abstracts for most papers ;a few articles are publishedentirelyin English.It is a mediumfor the publication of original andforefront research and high quality reviews covering recent advancesin all fields of Earth Sciences .Eachissue is devoted to a single topicand edited by an authorityin that field .Scope of Earth Science Frontiers…     

Scope of Earth Science Frontiers

<正>Earth Science Frontiers is a bi-monthly publication in Chinese with English abstracts for most papers ;a few articles are published