A Comparison of GPS- and NWP-derived PW Data over the Korean Peninsula

Precipitable Water (PW) derived from Global Positioning System (GPS)measurements and numerical weather prediction (NWP) model analysis data werecompared to further evaluate the efficacy of applying GPS-derived PW to theNWP model. The spatial and temporal variations of GPS-derived PW during arainfall event were also examined.GPS-derived PW measurements show good agreement with the behavior of watervapor at a high spatial resolution during the analysis period. Temporalanomalies of GPS-derived PW moving along with the front are successfullydetected by the GPS array. Large positive anomalies of GPS-derived PW areindicated immediately before a rainfall event, and the intensity of thesepositive anomalies do not seem to decrease significantly as theprecipitation system passes. These results indicate that the Korean GPSnetwork may have great potential as a PW sensor over the Korean Peninsula.In contrast with GPS-derived PW, NWP-derived PW shows negative biases. Thesebiases appear to stem mainly from the differences between modeled and actualGPS site elevations, as GPS sites were generally located at elevations lowerthan those employed by the NWP model. However, there still exists adiscernable dry bias after a PW correction is applied to NWP-derived PW.GPS-derived PW better reflects the spatial and temporal moisture variationsof precipitation systems, as compared to NWP-derived PW. These resultsprovide entirely new information for improving the regional NWP system,since GPS-derived PW produced with data from the Korean GPS network may beincorporated into the NWP model to improve rainfall forecasts.     

大别-苏鲁造山带在朝鲜半岛的延伸方式——基于~(40)Ar/~(39)Ar构造年代学的约束

本文结合野外构造变形特征观测,在朝鲜半岛的不同构造单元采集14件糜棱岩和片麻岩样品进行~(40)Ar/~(39)Ar年代学分析,在此基础上通过对比朝鲜半岛与大别造山带不同构造单元的变形特征,探讨大别苏鲁构造带在朝鲜半岛的东延特征,取得如下认识:朝鲜半岛中部的主要构造带在中生代经历了碰撞阶段(~210Ma)、逆冲推覆(200~150Ma)、造山后伸展阶段(140~90Ma)三个主要的构造过程;从变形期次和变形特征看,临津江构造带与大别造山带的北淮阳构造带、苏鲁构造带北部威海地区具有可比性,沃川构造带与南大别构造带有相似之处;在朝鲜半岛,自临津江带至沃川带构成了较完整的中生代碰撞造山带,即大别-苏鲁造山带的东延部分,原认为的"京畿地块"应属造山带的一部分。     

从“汉城”到“首尔”

历史上的首尔 有“汉江畔明珠”美称的首尔是座历史悠久且拥有众多称谓的城市。经考古专家对汉江两岸出土的大批石器和陶器的考证，在新石器时代，首尔周边地区就有人居住。朝鲜半岛三国鼎立时代，即公元前18年百济王朝在此建都，始称慰礼城，意为“我们的城”。公元392年和475年，来自北方的高句丽占领此城，475年改称南平壤，因位于平壤以南而得名。高句丽王朝在行政管理上于474年曾在此设置北汉山郡。而后统一的新罗时代，即相当于我国唐朝年间，新罗真兴王16年，称为汉山州；景德王时即公元757年改称汉州。公元904年又改称杨山。     

东北亚运输合作: 中国与朝鲜半岛陆路交通联系与运输组织战略

本文从促进东北亚地区经济合作健康发展角度出发,以分析预测中国与朝鲜半岛间潜在的运输需求为基础,阐述了构建中国与朝鲜半岛陆路交通联系对完善东北亚和黄海经济区交通运输体系的战略意义;构想了组织陆路交通联系的地域模式,并简要评价了不同模式的可行性和经济效益潜力。提出了以“轴－辐”模式组织中国与朝鲜半岛的陆路交通联系是最合理的观点。     

朝鲜半岛地缘政治经济格局演变及俄罗斯政策走向评析

俄罗斯历来重视朝鲜半岛的战略地位，半岛的稳定对其地缘政治经济战略具有重要意义。本文论述了俄罗斯不断调整的朝鲜半岛政策，对其形成背景、影响和制约因素进行了分析和探讨。     

朝鲜、韩国国名探源

众所皆知，朝鲜半岛本是一统一的国家，第二次世界大战结束后根据《波茨坦协定》，由苏美军队以“三八线”为界对朝鲜分割占领，使朝鲜半岛人为地分为两部分。1948年8月，半岛南部宣布成立大韩民国；同年9月，北半部成立朝鲜民主主义人民共和国。本文介绍我们的邻邦朝鲜、韩国这两个国名以及高丽这一名称是如何得来的。     

Meso-Cenozoic basin evolution in northern Korean Peninsula

In the Korean Peninsula the Meso-Cenozoic basins were mainly formed due to fault block and block movement. The Mesozoic fracture structures correspond basically to modem large rivers in direction. Such faults were usually developed to rift and formed lake-type tectonic basin, such as the Amrokgang-, Taedonggang-, Ryesonggang-, Hochongang-, Jangphari-, Susongchon-, Pujon-, and Nampho basins. The Mesozoic strata are considered to be divided into the Lower Jurassic Taedong System, Upper Jurassic Jasong System, Upper Jurassic-early Lower Cretaceous Taebo System, and the Upper Cretaceous-Paleocene （ Chonjaebong, Hongwon, Jaedok Series）. The Cenozoic block movement succeeded the Mesozoic fault block movement. The Kilju-Myongchon Graben and Tumangang Basin, etc, are the basins related to the fault zones developed from the Oligocene to Miocene. In addition, the Tertiary basins were formed in many areas in the Miocene （e. g. Sinhung, Oro, Hamhung, Yonghung, Anbyon, Cholwon, etc）. The Cenozoic sedimentation occurred mainly from the late Oligocene to Miocene. The Kilju-Myongchon Graben was the fore deep connected to the sea and the basins inclined in the Chugaryong Fault Zone are intramountain basins. Therefore, coal-beating beds and clastic rocks in the intramountain basins and rare marine strata and terrigenous clastic rocks are main sedimentary sequences in the Cenozoic.     

朝鲜半岛及其周围地区的历史地震研究

历史地震资料是进行地震监测预报和地震安全性评价的重要依据之一.但是,由于人们对地震事件的认识水平受科学技术水平的限制,使得我们对地震的描述,只是在人类发明了地震记录仪后,才能有比较完善的地震目录产生.在此之前,对地震参数的确定,只能依据地震发生时,在地面上所造成的地震遗迹和文字史料来综合确定,用地震烈度表来衡量该地震事件的地震强度,给出历史地震的地震参数.     

朝鲜半岛两次核爆的识别

2006年10月9日10点35分和2009年5月25日8点54分朝鲜先后进行了两次核试验,震级分别为ML3.5和ML4.9.利用辽宁数字地震台网和丹东区域台网记录的朝鲜两次核爆的波形事件,采用波形特征对比、多阶小波细节分析以及S波拐角频率计算方法,对核爆进行识别与判定.     

中国东部-朝鲜半岛中生代板块边界划分研究进展

中朝板块与扬子板块在晚二叠世-三叠纪期间的碰撞形成大别-苏鲁造山带,这一碰撞结合带过黄海在朝鲜半岛的延伸方式一直是国内外学者关注的焦点.由于朝鲜半岛地质构造的复杂性,对于这一问题仍存在诸多不同的观点,主要有两类:①沿临津江带或沃川带或京畿地块进入朝鲜半岛;②没有延入朝鲜半岛.深部地质与地球物理资料显示区内两板块深部结合带位置可能与表层存在较大差异,这更加深了板块边界划分研究的复杂程度.本文总结了上述两个板块结合带划分研究的各类观点,回顾下扬子上、下地壳归属特征差异的主要研究进展,认为产生观点差异的主要原因是对区内中新生代整体地质演化认识不足,尤其是缺乏足够可靠的深部信息,从而提出地质、地球化学、地球物理资料的综合解释是今后解决这一问题的发展方向,指出黄海地区海-陆构造关系为国内下一阶段的研究重点.