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波斯尼亚和黑塞哥维那共和国,是一个面积只有浙江省一半的欧洲新国家。不过,我乘坐的国际列车从该国北端驶入以后,摇摇晃晃地走了七八个小时,依然没有到达中部的首都萨拉热窝。铁路两侧尽是低矮的山谷和溪流,间或可见清真寺的尖塔露出村头,黄色的砖墙被绿色的庄稼和杂乱的树木环绕着。车上旅客稀少,仅有的几位也因为语言不通而无法交流。黄昏时分, 相似文献
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岛屿是海洋里被水环绕、面积比大陆小的陆地,也指湖里、江河里被水环绕的陆地。本文所谈的岛屿,主要是指海洋中的岛屿。人们通常把岛屿比喻为散落在海洋里的珍珠,它们不仅美,很多还具有重要的政治、军事、经济等战略价值。 相似文献
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浙北湖州地区土墩墓分布广,数量多.建立符合浙北实际的土墩墓影像解译标志是全面调查、发现和研究土墩墓的技术关键.土墩墓的类型有多种,总结了这些土墩墓的主要影像特征.山脊上的土墩墓呈串珠状分布,分布于山谷的土墩墓比较零散,平面呈方形,平原岗地上的土墩墓呈散点状,比较低缓,表土剥蚀了的石室土墩墓在影像上明显有棱角,特大土墩墓不仅形体大,而且周围有排列规则的多列小土墩墓环绕,具有重要考古价值.球状风化、农田中的水迹等易与土墩墓混淆,但也有其显著特征. 相似文献
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The Circum-Pacific Teleconnection Pattern in meridional wind in the high troposphere 总被引：8，自引：0，他引：8
WANG Huijun 《大气科学进展》2005,22(3):463-466
The Circum-Pacific Teleconnection Pattern (CPTP) is revealed in the meridional wind in the high troposphere via an emprirical orthogonal function (EOF) and correlation analysis on NCEP/NCAR reanalysis data. The CPTP is found to be composed of the North Pacific-North American teleconnection pattern (PNA), the South Pacific-South American teleconnection pattern (PSA), and the teleconnection patterns over the tropical western Pacific and the tropical eastern Pacific (or, Central America, or, tropical Atlantic). There is substantial interannual variability of the CPTP and a typical CPTP can be detected in some years. It is speculated that the zonal wind anomalies over the equatorial region in the western and eastern sides of the Pacific may play a role in linking the two hemispheres. The anomalous convection activities in the Tropics are plausible triggering factors for the zonal wind anomalies that are responsible for the composition of the CPTP. 相似文献