The 16th Workshop on Antarctic Meteorology and Climate and 6th Year of Polar Prediction in the Southern Hemisphere Meeting

1. Overview In June 2021, the 16th Workshop on Antarctic Meteorology and Climate (WAMC) and the 6th Year of Polar Prediction in the Southern Hemisphere (YOPP-SH) Meeting (http://polarmet.osu.edu/WAMC;021/) were held online and hosted by the Polar Meteorology Group at Byrd Polar and Climate Research Center, The Ohio State University, Columbus,Ohio (Fig. 1).     

A Brief Report of the Investigation in the West Part of Tao-ho

(1) A General Statement.— The west part of Tao-ho which has become ourdominion since the Han Dynasty is still obscure for its geography. It containsnine districts of Kansu Province and two districts of Kokonor Province, andholds an important position in the development of the north-west China.     

Incorporating the Istanbul-Ankara high-speed railway into the Belt and Road Initiative: Negotiation,institutional alignment and regional development

This article contributes to a small but growing body of multi-sited and multi-scalar research on the Belt and Road Initiative.We focus on relations at the national,regional and international scales,and present original research from China and Turkey,to show how the Istanbul-Ankara high-speed railway has served as a testing ground for China's Belt and Road Initiative(BRI).Its construction was initially funded by the European Investment Bank,but it is now part of the backbone of the Turkish Government's Middle Corridor plan which enhances west-east connectivity and integration with the Caucasus and Central Asia.We show that in contrast to multinational corporations from the OECD that seek to remain footloose,Chinese state-owned enterprises(SOEs)seek to adapt to,apprehend and ultimately shape local in-stitutions.In the case of Turkey this proved difficult given its institutional alignment with the European Union.Thus,while the railway project was completed successfully by a consortium led by a Chinese SOE,Turkey's dynamic and complex regulatory environment discourages Chinese SOEs in the infrastructure sector.We conclude that the Turkish and Chinese gov-ernments are currently pursuing complementary territorial visions yet their cooperation is project-based and pragmatic.     

汪额诺格岛(北海)与大陆之间障壁潮坪的沉积物:粘土矿物、重金属和有机碳

本文目的在于说明有限区域内潮坪小环境沉积物的矿物学和地球化学特点及沉积过程的改造作用。沉积物样品取自汪额诺格岛与联邦德国的德国湾南岸之间的障壁潮坪。粒度分析表明,障壁潮坪由大体平行于大陆的泥坪、混合坪到砂坪三个带组成。粘土矿物以伊利石为主,其次为蒙脱石、高岭石和绿泥石,与北海粘土矿物组合一致。粘土矿物组成和重金属Fe、Mn、Cu、Pb、Zn含量在潮坪不同部位相差无几,说明沉积物受到潮汐水流反覆侵蚀和再沉积作用的混合作用。近潮口附近有机碳含量增高是潮汐水流从北海通过进潮口携入有机物的结果。     

产于太古代条带状铁矿建造寄主岩中金矿床的后生成因

虽然世界上太古代克拉通中绿岩带的矿床成因多种多样,但可发现一种极为常见的现象,即在含有为数众多的小型金矿的地区内,总含有好几个大型金矿床(>50吨Au)产出.主要在加拿大,澳大利亚,津巴布韦,南非,巴西以及印度等国,绿岩带巳产出金20,000则吨以上(Woodwall,1979).如果说绿岩带是威特瓦特斯兰德金矿源这种说法可以被接受的话,那么,迄今为止,太古代区域已生产出世界上黄金产量的一半以上.这表明金的矿化作用是太古代绿岩带演化的一个基本部分.     

希腊Samos岛西部晚中新世盐碱湖中硬硼钙石和钠硼解石的产状

<正> 0 引言工业硼酸盐矿床主要是钠硼酸盐、钠-钙硼酸盐和钙硼酸盐,如硬硼钙石、硼砂(原硼砂)、钠硼解石、贫水硼砂和板硼钙石。另外还有100多种硼酸盐矿物,但含量较低,其中最常见的有:图硼锶石、斜硼钠钙石、三方硼砂、砷硼镁钙石和水硼锶石。所有硼酸生产国(除前苏联外)的硼酸盐矿床都是表生沉积形成的,包括低—中等水溶性硼酸盐。相反,罕见的内生镁硼酸盐——硼镁石是前苏联的主要硼酸盐资源。表生类型的硼酸盐和硼酸的富集赋存在以下的环境中:(1)火山喷气和热泉;(2)海洋     

From Paleogeographic maps to Evolving Deep-time Digital Earth models

正Major advances in computational power,as well as community modelling workflows and an improvement in data availability,has revolutionized Earth sciences over the last decade.Geological data has been synthesized into flexible and open access plate tectonic and paleogeographic reconstructions using the open-source and cross-platform GPlates (www.gplates.org)software since 2008 (Muller et al.,2018;Muller et al.,2008).These digital plate     

Levels and distribution of polybrominated diphenyl ethers and organochlorine compounds in sea turtles from Japan

Three species of sea turtles (green, hawksbill and loggerhead turtles) stranded along the coasts or caught (by-catch) around Ishigaki Island and Kochi, Japan were collected between 1998 and 2006 and analyzed for six organohalogen compounds viz., PBDEs, PCBs, DDTs, CHLs, HCHs and HCB. The present study is the first and foremost to report the occurrence of organohalogen compounds in the sea turtles from Japan. Among the compounds analyzed, concentrations of PCBs, DDTs and CHLs were the highest in all the turtle samples. PBDEs were ubiquitously present in all the turtle species. Comparing with the other two species, concentrations of organohalogens in green turtle were relatively low and decreasing trend in the concentrations were noted with increasing carapace length. Concentrations of OCs in sea turtles from the coasts of Ishigaki Island and Kochi were relatively low as compared to those from other locations in the world.