第七大洲——垃圾洲？

在夏威夷海岸与北美洲海岸之间，数百万吨被海水冲积于此的塑料垃圾组成了“第七大洲”。而且，顺时针流动的海水还形成了一个可让塑料垃圾飞旋的永不停歇的强大漩涡。     

城市:正在下沉!

千年古城西安在不知不觉中变“矮”,大雁塔可能成为“比萨斜塔”。天津塘沽地区上世纪九十年代比五六十年代海拔高度降低了3米。海河出现海水倒灌。北京有五个地区出现较大的地面塌陷,最严重的地方地表还在以每年20至30毫米的速度下沉。上海的地面以平均每年10毫米的速度下沉,有专家惊呼:再下沉2米上海将陷于汪洋之中。     

Seasonal Phase-Locking of Peak Events in the Eastern Indian Ocean

The sea surface temperature （SST） anomaly of the eastern Indian Ocean （EIO） exhibits cold anomalies in the boreal summer or fall during E1 Nino development years and warm anomalies in winter or spring following the E1 Nino events. There also tend to be warm anomalies in the boreal summer or fall during La Nina development years and cold anomalies in winter or spring following the La Nina events. The seasonal phase-locking of SST change in the EIO associated with E1 Nino/Southern Oscillation is linked to the variability of convection over the maritime continent, which induces an atmospheric Rossby wave over the EIO. Local air-sea interaction exerts different effects on SST anomalies, depending on the relationship between the Rossby wave and the mean flow related to the seasonal migration of the buffer zone, which shifts across the equator between summer and winter. The summer cold events start with cooling in the Timor Sea, together with increasing easterly flow along the equator. Negative SST anomalies develop near Sumatra, through the interaction between the atmospheric Rossby wave and the underneath sea surface. These SST anomalies are also contributed to by the increased upwelling of the mixed layer and the equatorward temperature advection in the boreal fall. As the buffer zone shifts across the equator towards boreal winter, the anomalous easterly flow tends to weaken the mean flow near the equator, and the EIO SST increases due to the reduction of latent heat flux from the sea surface. As a result, wintertime SST anomalies appear with a uniform and nearly basin-wide pattern beneath the easterly anomalies. These SST anomalies are also caused by the increase in solar radiation associated with the anticyclonic atmospheric Rossby wave over the EIO. Similarly, the physical processes of the summer warm events, which are followed by wintertime cold SST anomalies, can be explained by the changes in atmospheric and oceanic fields with opposite signs to those anomalies described above.     

Purification and characterization of lectin from humoral fluids of Charybdis feriatus

1 INTRODUCTION Lectins have been regarded as having a puta- tive role in non-self recognition in vertebrate and invertebrate immunities (Arason, 1996; Matsushita, 1996; Olafsen, 1996; Vasta et al., 1999; Wilson, et al., 1999; Marques and Barracco, 2000). …     

渤海湾风暴潮天气系统及风场结构个例分析

利用常规资料、中尺度模式(MM5)模拟结果和自动站资料分析了2003年10月11日渤海湾风暴潮的天气系统及风场结构特征。分析表明，强冷空气从偏东路径南下与强盛的暖湿急流及地面倒槽的共同作用，形成持续强东北大风是引发渤海风暴潮的主要强迫动力，风应力海水向岸输送(增水)范围约100km持续时间10～12h，风应力增水作用与天文大潮相叠加直接导致风暴潮的发生。1985年以来渤海湾成灾风暴潮发生的几率明显增加。     

饱和带/非饱和带运移模型(SUTRA)软件介绍

1　导言随着人口增长和城市发展。地下水的超量开采已经引起了很多环境地质问题,在沿海地区,海水入侵最为突出。尤其是近二十多年以来,计算机技术的飞跃发展,使得海水入侵研究获益匪浅,出现了一大批模拟软件。国外学者或研究机构开发的模拟软件就达数十种,如3DFATMIC、3DFEMFAT     

机载激光测深系统测深误差源的研究

机载激光测深系统将成为21世纪精细测绘海底地形和探测水下目标的高新技术设备.本文论述了影响机载激光测深精度的附设误差和海水深度的测量误差两大误差源.     

近万年来冲绳海槽温跃层的高分辨率记录

通过对冲绳海槽北部Ｂ－３ＧＣ柱状样的分析,在高分辨率地层学的基础上,结合冲绳海槽南部柱状样的结果,利用浮游有孔虫组合和氧碳稳定同位素对近万年来温跃层深度的变化进行探讨结果表明,６４００ ａ之前,温跃层较浅,此后加深,在大约４０００～２０００ａＢＰ期间深度减小;此外,温跃层的变化与表层海水古温度的变化具有良好的正相关性．这些变化在冲绳海槽南北海区大体一致,可能与黑潮暖流的变迁密切相关,也说明黑潮主流轴６４００ ａＢＰ以后和４０００～２０００ａＢＰ期间可能发生过强度或主流轴位置的变化．８２００～６４００ ａＢＰ期间冲绳海槽中的黑潮分支可能在逐渐增强。