Particle-tracking simulation for the drift/diffusion of spilled oils in the Sea of Okhotsk with a three-dimensional, high-resolution model
Particle-tracking simulation for the drift/diffusion of spilled oils in the Sea of Okhotsk with a three-dimensional, high-resolution model
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DOI：
10.1007/s10872-013-0182-8
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发表时间：
2013-06
影响因子：
2.3
通讯作者：
J. Ono;K. Ohshima;Keisuke Uchimoto;N. Ebuchi;H. Mitsudera;H. Yamaguchi
中科院分区：
文献类型：
--
作者：
J. Ono;K. Ohshima;Keisuke Uchimoto;N. Ebuchi;H. Mitsudera;H. Yamaguchi
为了模拟鄂霍次克海的石油泄漏，我们开发了一个三维高分辨率的海洋环流模型。特别是在强层结期，该模型提高了速度场的再现性。利用本模型的每日洋流数据和潮汐模型的每小时昼夜潮流数据，进行了蒸发和生物降解影响的颗粒追踪实验。根据集合预报思想，用1998-2005年8年平均的粒子相对浓度来表示结果。对于从萨哈林二号油田释放的颗粒，9月至1月部署的颗粒被东萨哈林海流带到南方，最终在60-90天后到达北海道海岸。在3 - 8月部署的粒子被天气风漂移扩散到近海，几乎没有被输送到萨哈林岛以南地区。对于石油输出站Prigorodnoye附近地区释放的颗粒物，在天气风漂移扩散后，其中一部分被Soya暖流带到北海道近海。11 - 4月释放的颗粒物主要通过天气风漂移，其次通过强潮流扩散，通过Soya海峡流出日本海。通过考虑蒸发和生物降解的影响，颗粒的相对浓度在到达北海道海岸之前大大降低，特别是在从萨哈林II油田漂移的情况下。
To conduct the simulation of oil spills in the Sea of Okhotsk, we developed a three-dimensional, high-resolution ocean circulation model. The model particularly improved the reproducibility of velocity field during the strong stratification period. Particle-tracking experiments with the effects of evaporation and biodegradation were performed using the combined data of daily ocean currents from the present model and the hourly diurnal tidal currents from the tidal model. The results are shown by the relative concentration of the particles averaged over the 8 years of 1998–2005 based on the ensemble forecast idea. For the case of particles released from the Sakhalin II oil field, the particles deployed in September–January are carried southward by the East Sakhalin Current, finally arriving at the Hokkaido coast, after 60–90 days. The particles deployed in March–August are diffused offshore by the synoptic wind drift, and hardly transported to regions south of Sakhalin. For the case of particles released from the region off Prigorodnoye, the oil export terminal, after the diffusion by the synoptic wind drift, a part of them are carried offshore of Hokkaido by the Soya Warm Current. The particles released in November–April flow out to the Japan Sea through the Soya Strait, mainly by the synoptic wind drift and secondly by the diffusion due to strong tidal currents around the Soya Strait. By considering the effects of evaporation and biodegradation, the relative concentration of the particles is considerably decreased before arriving at the Hokkaido coast, particularly in the case of drift from the Sakhalin II oil field.