...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Pure and Applied Geophysics >Upper Ocean and Subsurface Variability in the Bay of Bengal During Cyclone ROANU: A Synergistic View Using In Situ and Satellite Observations
【24h】

Upper Ocean and Subsurface Variability in the Bay of Bengal During Cyclone ROANU: A Synergistic View Using In Situ and Satellite Observations

机译：旋风罗纳孟加拉湾的上海和地下变异性：使用原位和卫星观测的协同观点

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

In this study, the upper ocean and subsurface variability during the different phases of the cyclonic storm ROANU along the western Bay of Bengal (BoB) in May 2016 are investigated by using the moored buoys, Argos, HF radar and satellite datasets in the proximity of the cyclone track. The moored buoy observations recorded a decrease of sea surface temperature (SST) by similar to 1 degrees C all over the track, whereas increase in salinity by similar to 1.5 PSU was detected along with the highest wind speed of 16ms(-1), pressure drop of 14hPa and air temperature drop of 4 degrees C. The cooling at the cyclone centers from the satellite data indicated higher (lower) SST drops when translation speed of the cyclone was low (high) and took more (less) time to recover to its pre-cyclone state in southern (northern) BoB. Mostly, higher SST drop was observed along the right side of the cyclone track. Interestingly, the opposite phenomenon occurred before landfall, where SST drop was higher on the left due to upwelling in the head bay as observed both from wave rider buoy (WRB) at Digha and satellite SST. The WRB near Vizag showed the maximum increase in significant wave heights by similar to 2.4m during the passage of cyclone. Argos also captured cyclone-induced drop in temperature due to upwelling and entrainment reasonably well. In the southwestern bay, significant upwelling was observed from the Argos with drop in temperature and increase in salinity in the upper layers. However, a strong stratification was observed from Argos in the northwestern BoB due to lesser salinity and higher precipitation. The currents from in situ as well as HF radar datasets measured the increase in current magnitude during the passage of ROANU. Rotary spectral analysis showed strong inertial currents with frequency similar to 2.1days at BD11 location, with higher amplitudes of the clockwise component during the cyclone period.
机译：在本研究中，通过使用停机的浮标，ARGOS，HF雷达和卫星数据集在2016年5月在2016年5月沿着孟加拉（BOB）西部海湾沿岸（Bengal）的不同阶段的上海和地下变异性。旋风轨道。停泊的浮标观察通过轨道上的1℃下降，录制了海面温度（SST）的减少，而通过16ms（-1）的最高风速，检测到与1.5psu相似的盐度增加4℃下降14HPa和空气温度下降4℃。当旋风的转换速度低（高）时，旋转卫星数据的冷却从卫星数据中表明较高（更低）SST下降，并且需要更多（较少）时间来恢复它在南部（北部）鲍勃的飓风状态。大多数情况下，沿着旋风轨道的右侧观察到较高的SST下降。有趣的是，在登陆前发生了相反的现象，其中SST下降在左侧较高，因为在达卡和卫星SST的Wave Rider Buoy（WRB）中观察到的头部托架中。 VizAG附近的WRB显示出在旋风通道期间的24米的显着波高的最大增加。由于升高和夹带的合理良好，Argos也捕获了旋风诱导的温度下降。在西南湾，从argos中观察到显着的升值，并在温度下降并增加上层的盐度。然而，由于盐度较小和更高的降水，从西北鲍勃的Argos观察到强烈分层。来自原位的电流以及HF雷达数据集测量了罗纳通道期间的当前幅度的增加。旋转光谱分析显示出具有与BD11位置的频率相似的强的惯性电流，在旋风周期期间具有较高的顺时针部件的幅度较高。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号