中华竹节虫(Sabaco sinicus),中国近海竹节虫科(环节动物门:多毛纲)一新种

根据在中国近海采集到的标本,描述多毛类环节动物一新种——中华竹节虫（Sabaco sinicus sp.nov.）。该物种标本在乌沙科夫等（1962）报道后一直被错误鉴定为钩齿短脊虫（Asychis gangeticus Fauvel,1932）。我们基于以下性状将该种描述为一新物种：项沟和前三个刚节具深棕色色素点;刚节4–6的腺体分布特征;肛前节无刚毛;肛漏斗喇叭状,背侧小叶呈扁盘状;具膝状的背刚毛、表面有或无螺旋刺毛带的细毛状背刚毛;腹刚毛为排成一列的鸟嘴状齿片刚毛。钩齿短脊虫和该新种的区别在于前者身体无色素点,肛板背侧小叶呈三角形。自1950s以来,该物种的分布区已经从长江口以南海区明显向北扩展。     

平均海平面上升对东中国海台风风暴潮影响的数值模拟

本文采用ECOMSED模式模拟了影响东中国海的3次台风过程,经与实测资料对比验证了模型的可靠性。在此基础上设计了敏感性试验以考察海平面上升对风暴潮造成的影响。结果表明,海平面上升对风暴潮的影响在空间分布上不是一致的,且因具体台风过程而异。整体而言,海平面上升对风暴潮造成的影响有限。海平面上升0．5m,大部分站位风暴增水极值基本不变,即使海平面上升5m大部分站位的风暴增水极值相对改变量都小于10％。     

中国海监荣成市大队服务涉海村展海监队伍形象

为促进涉海村经济的发展、更好地为涉海村服务,展示海监队伍形象,中国海监荣成市大队从 2010 年 9 月 1 日起,运用配置的亚米级 GPS 为虎山镇梁家村等 8 个村的养殖圈进行了实地测量。     

创新理念 破解难题 谋求发展

<正>在上级海监总队和深圳市政府、深圳市海洋局的关心、指导和大力支持下,2009年中国海监深圳支队以科学管理促科学发展,进一步解放思想,根据《2009年度南海区海监执法示范工作实施方案》的部署以及省总队的要求,以敢想、敢干的特区海监精神,积极开展海监执法示范工作。     

希腊：文明的兴衰之地

地中海几乎是一个内海,适宜于古代商船的航行,加上温暖的天气,这·才产生了欧洲历史上第一个伟大的文明——希腊文明,由此引发了“古典的地中海”的昌盛。后来,这一文明（在克服了微寒的气候以后）又延伸到了“北方的地中海”,即波罗的海、北海和拉什芒海峡（英吉利海峡）,并且在十九世纪末二十世纪初随着航海技术的改进进一步发展成为了“大西洋文明”。而在东方,在中国海的右侧,在日本和台湾、菲律宾之间的海面上,     

Analysis of the high and low temperature centers and their relation with circulations in the East China Sea

Three warm currents, the Kuroshio, its shelf intrusion branch in the northeast of Taiwan and the Taiwan Warm Current (hereafter TWC), dominate the circulation pattern in the East China Sea (hereafter ECS). Their origination, routes and variation in winter and summer are studied. Their relationship with four major high and low temperature centers is analyzed. Differing from the previous opinion, we suggest that the four major centers are generated to a great extent by the interaction of the currents in the ECS. In summer, a cold water belt in the northeast of Taiwan is preserved from winter between the Kuroshio and the TWC. The shelf intrusion branch of the Kuroshio separates the water belt, and two low temperature centers generate in the northeast of Taiwan. In the southern ECS, the TWC transports more heat flux northward to form a warm pool. But it is separated in the lower layer by the cold water driven by the intrusion branch of the Kuroshio. So the TWC and the intrusion branch of the Kuroshio play a dominating role to generate the high temperature center. The interaction among the eastward TWC, the northward Tsushima Warm Current (hereafter TSWC) and the southward Su Bei Coastal Flow (hereafter SBCF) generates the low temperature center in the northern ECS. In winter, the strengthening of the shelf intrusion branch of the Kuroshio obscures the two low temperature centers in the northeast of Taiwan. For the weakening of the TWC, the high temperature center in the southern ECS vanishes, and the low temperature center in the northern ECS shifts to south.     

Influence of particle composition on thorium scavenging in the marginal China seas

Thorium-234 and particle composition (organic matter, biogenic silica, carbonate and lithogenic component) were examined in the East China Sea (ECS) and the northern South China Sea (NSCS) in order to constrain the particle types scavenging thorium isotopes. Good positive correlations between particulate organic matter (POM) or carbonate and thorium-234 in suspended particulate matter (SPM) indicates that POM and carbonate are efficient to scavenge thorium-234. No relationship between biogenic silica and thorium-234 suggests that geochemical behavior of thorium-234 may be not influenced by biogenic silica. A simple model was used to evaluate the affinity of thorium-234 to different particle components. The results show that POM is the most efficient scavenger for thorium-234 in the ECS and the NSCS, followed by carbonate. The authors'' results lend support to the utility of thorium-234 as a proxy of POC and carbonate in the upper layer. However, the strong dependence of thorium scavenging on particle composition challenges thorium-230 as a constant flux proxy.     

Seasonal variation of the barrier layer in the PN section

In this paper, we use the conductivity-temperature-depth (CTD) observation data and a three-dimensional ocean model in a seasonally-varying forcing field to study the barrier layer (BL) in the PN section in the East China Sea (ECS). The BL can be found along the PN section with obviously seasonal variability. In winter, spring and autumn, the BL occurs around the slope where the cold shelf water meets with the warm Kuroshio water. In summer, the BL can also be found in the shelf area near salinity front of the Changjiang (Yangtze) River Dilution Water (YRDW). Seasonal variations of BL in the PN section are caused by local hydrological characteristics and seasonal variations of atmospheric forcing. Strong vertical convection caused by sea surface cooling thickens the BL in winter and spring in the slope area. Due to the large discharge of Changjiang River in summer, the BL occurs extensively in the shelf region where the fresh YRDW and the salty bottom water meet and form a strong halocline above the seasonal thermocline. The formation mechanism of BL in the PN section can be explained by the vertical shear of different water masses, which is called the advection mechanism. The interannual variation of BL in summer is greatly affected by the YRDW. In the larger YRDW year (such as 1998), a shallow but much thicker BL existed on the shelf area. Supported by National Basic Research Program of China (973 Program, No. 2005CB422303 and 2007CB411804), the Key Project of the International Science and Technology Cooperation Program of China (No. 2006DFB21250), the “111 Project” of the Ministry of Education (No. B07036), the Program for New Century Excellent Talents in University, China (No. NECT-07-0781)     

Cold event at 5 500 a BP recorded in mud sediments on the inner shelf of the East China Sea

A 700-year record (1.0–1.5 a resolution) of the East Asian winter monsoon (EAWM), based on grain-size analysis and AMS¹⁴C dating of Core EC2005 from the inner-shelf mud wedge of the East China Sea (ECS), was compared with the Dongge stalagmite δ¹⁸O record during the mid-Holocene. The upper muddy section of Core EC2005 has been formed mainly by suspended sediments derived from the Changjiang (Yangtze) River mouth since 7.3 ka BP. High precipitation and a strengthened EAWM might have played key roles in the high sedimentation rate (1 324–1 986 cm/ka) between 5.9–5.2 ka BP. The EAWM strengthened when the Asian summer monsoon weakened, especially around 5 500 a BP, which corresponded to a worldwide cold event. The EAWM during the mid-Holocene shows statistically significant solar periodicities at 62 and 11 a. The 5 500 a BP cold event might be resulted from orbital forcing and changes in solar activity.     

“908专项档案工作会议暨业务培训”在杭州举行

2009年4月16日至17日,由国家海洋局办公室主办的“908专项档案工作会议暨业务培训”在杭州举行。来自全国30多家“908”专项任务承担单位的代表参加了会议和培训。国家海洋局办公室副主任肖银水、科技司副司长兼“908”专项办公室主任雷波、国家海洋信息中心（中国海洋档案馆）副主任（副馆长）李东旭、国家海洋环境监测中心副主任兼“908”专项办专家组组长李培英出席了会议。