沿海地区海流的远程观测监测

V. Gorbatsky, N. Shpilev, Ye. Lebedeva
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The additional data on the satellite observation of this area and on the wind condition is used from LANCE processing system [9, 10] and reanalysis NCEP/NCAR [11, 12]. The comparative analysis is carried out on the large vertical structures (LVS) establishing in the research coastal area. The numerical modeling of the water mass circulation in this area is carried out by the software package COHERENS (Belgian Institute of Natural Science) to investigate the role of the wind conditions at LVS appearance in the research area. Main results. The LVS in the vicinity of Sea coast line could be generated, as satellites observations demonstrated, by the vortices arrived along the coast line from the east-south direction in accordance with the Black Sea general circulation flow. Such vortices could be induced by the bottom roughness, rivers discharges and another local sources. Another LVS source could be connected with the wind impact in some affordable direction as demonstrated by the numerical modeling of the coastal water circulation. The continuous currents measurements at the Sea surface by Doppler HF coastal Radar supply the valuable data for further details on the space –time variation of LVS parameters and operational forecast of the hydrology regime in the aquatic areas. The operative numerical modelling of the wind impact to the surface currents structures formation provides the efficient estimation of the local large vorticity structure appearance in the research area. Conclusion. Satellite radar and optical observation provide the large scale control on the Sea surface dynamics conditions, but that is limited by relatively long interval between satellite tracks over the region of interest and do not acquire optical data at the cloud cover. 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引用次数: 0

摘要

研究对象和目的。对海面涡旋结构光学卫星图像观测与地面高频多普勒雷达获得的速度场进行了对比分析。本研究的目的是通过卫星监测、海流雷达探测、风数据和调查区域水循环数值模拟的联合应用,估计对沿岸水域动力学变化进行快速监测和可行性评估的可能性。材料和方法。对“哨兵1号”和“哨兵2号”卫星以及海岸多普勒高频雷达“海洋探测器”在黑海东南部地区获得的海面观测数据进行了分析。该地区卫星观测和风况的额外数据来自LANCE处理系统[9,10]和再分析NCEP/NCAR[11,12]。对研究区沿海地区建立的大型竖向结构进行了对比分析。该地区的水团环流的数值模拟是通过软件包COHERENS(比利时自然科学研究所)进行的,以研究风条件在研究区域LVS出现时的作用。主要结果。卫星观测表明,根据黑海总环流,从东-南方向沿海岸线到达的涡流可能会产生海岸线附近的LVS。这种涡流可能是由底部粗糙度、河流流量和其他局部来源引起的。另一个LVS源可能与一些负担得起的方向的风影响有关,如沿海水循环的数值模拟所示。多普勒高频海岸雷达对海面的连续海流测量为进一步了解LVS参数的时空变化和水域水文状况的操作预测提供了有价值的数据。风对地表流结构形成影响的有效数值模拟为研究区局部大涡度结构的出现提供了有效的估计。结论卫星雷达和光学观测提供了对海面动力学条件的大规模控制,但这受到感兴趣区域卫星轨道之间相对较长间隔的限制,并且无法获取云层处的光学数据。这些额外的数据可以从卫星光学、雷达和气象数据(LANCE、NCEP/NCAR)的开放互联网资源中获得,以获得更详细的海面动力学发展。利用高频多普勒雷达测量亚卫星海流有助于可靠地解释卫星图像和正确预测水域动力学。根据可变气象数据,结合动态过程遥感,对海洋沿岸水循环进行有效的数值模拟,可以有效地预测由于水团转移而引起的环境参数变化。总的来说,所提出的结果表明了卫星观测、海岸多普勒雷达测量、互联网数据和操作性数值建模在重污染海域的操作性海洋学和生态监测中的综合应用可能性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Sea currents monitoring in the coastal areas by the remote observation methods
Object and purpose of research. The compare analysis carried out on the vorticies structure optical satellite pictures observation of the sea surface and the velocities field obtained by the ground HF Doppler radar. The purpose of this research is estimation of the possibility on fast monitoring feasibility assessment for the changes in littoral waters dynamics through joint application of satellite surveillance, radar probing of sea currents, wind data and numerical simulation of water circulation in the area under investigation. Materials and methods. The Sea surface observation data obtained by the satellites Sentinel 1 and 2 and by the coastal Doppler HF radar Sea Sonde in the South-east Black Sea area are analyzing. The additional data on the satellite observation of this area and on the wind condition is used from LANCE processing system [9, 10] and reanalysis NCEP/NCAR [11, 12]. The comparative analysis is carried out on the large vertical structures (LVS) establishing in the research coastal area. The numerical modeling of the water mass circulation in this area is carried out by the software package COHERENS (Belgian Institute of Natural Science) to investigate the role of the wind conditions at LVS appearance in the research area. Main results. The LVS in the vicinity of Sea coast line could be generated, as satellites observations demonstrated, by the vortices arrived along the coast line from the east-south direction in accordance with the Black Sea general circulation flow. Such vortices could be induced by the bottom roughness, rivers discharges and another local sources. Another LVS source could be connected with the wind impact in some affordable direction as demonstrated by the numerical modeling of the coastal water circulation. The continuous currents measurements at the Sea surface by Doppler HF coastal Radar supply the valuable data for further details on the space –time variation of LVS parameters and operational forecast of the hydrology regime in the aquatic areas. The operative numerical modelling of the wind impact to the surface currents structures formation provides the efficient estimation of the local large vorticity structure appearance in the research area. Conclusion. Satellite radar and optical observation provide the large scale control on the Sea surface dynamics conditions, but that is limited by relatively long interval between satellite tracks over the region of interest and do not acquire optical data at the cloud cover. The additional data could be operative obtain from the open internet resource in satellite optical, radar and meteorological data (LANCE, NCEP/NCAR), to get the more details development of the Sea surface dynamics. Sub-satellite Sea currents measurements by HF Doppler radar are useful for the reliable interpretation of satellite pictures and for the proper forecast of the aquatic area dynamics. Operative numerical modelling of the Sea coastal water circulation in accordance with variable meteo data combining with dynamic processes remote measurements could be efficient for the forecast of the environment parameters variation due the water mass transfer. In general the presented results demonstrates the combined application possibilities of the satellite observations, coastal Doppler radar measurements, internet data and operative numerical modelling for operational oceanographic and ecological monitoring of Sea coastal areas with heavy pollution load.
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