基于ARGO数据的日本以南黑潮水温垂直变化研究

Study on the Temperature Profile of Kuroshio Current from ARGO Float Data in the Sea South of Japan

以日本以南的黑潮下游段为研究区,使用中国ARGO实时资料,中心提供的2005～2009年的ARGO浮标资料,研究该范围的温度垂直分布规律,并利用同纬度带开阔大洋的ARGO资料进行对比分析。发现在该海域200m深度附近存在一不随季节变化的恒温层,温度常年保持在19.1℃附近,标准偏差0.5℃,且该现象自西向东渐不明显。恒温层之上水温常年高于同纬度带的非黑潮区水温,恒温层之下水温垂直变化剧烈,至700m以下,水温常年呈均一状态。

The Kuroshio Downstream which located within the Sea South of Japan was chosen as the research area in this paper.ARGO float data from 2005 to 2009 provided by real-time ARGO data center in China were used to study the temperature profile of this area.ARGO float data with the same latitude range in the open ocean were chosen as the reference data.The research showed that around the depth of 200m there was a constant temperature layer which did not change with the seasons.This temperature maintained at 19.1℃ all year round.The STDEV was 0.5℃.The temperature of water layer from surface to 200m was higher than the same latitude on the non-Kuroshio area all year round.The temperature of water layer below 200m changed violently.The temperature was uniform below 700m all the year round.