Assessment of long term thermal stress on Egyptian coral reefs based on remotely sensed sea surface temperature data
Assessment of long term thermal stress on Egyptian coral reefs based on remotely sensed sea surface temperature data
复制标题
基于遥感海面温度数据的埃及珊瑚礁长期热应力评估
DOI：
10.7763/ijesd.2015.v6.726
复制
发表时间：
2015
影响因子：
4.5
通讯作者：
O. Saavedra
中科院分区：
文献类型：
--
作者：
灘岡 和夫;K. Nadaoka;A. Negm;O. S. Valeriano;O. Saavedra
红海旅游业高度依赖自然资源，尤其是埃及珊瑚礁的多样性。本研究应用当地珊瑚白化监测框架来调查威胁。目标区域包括生物多样性和对各种压力的耐受性最丰富的六个珊瑚礁点。通过将遥感海面温度（SST）数据与现场测量数据进行比较，评估了该区域遥感海面温度（SST）数据的适用性和准确性。对年度和季节性海面温度（SST）趋势进行了调查。使用二十三年（1990-2013）的海表温度数据来确保准确估计海表温度气候学的月最大平均值（MMM）。此外，还计算了过去 23 年中每个位置的热点。计算热应激指数供暖周数（DHW）以评估热应激的累积效应。这项工作根据长期分析提出了每个地点的漂白阈值限制。热分析结果与记录的漂白事件（2010 年和 2012 年）非常一致。此外，他们还揭露了一些可能没有被正确记录的历史事件。
Red Sea tourism is highly dependent on the natural resources especially the diversity of Egyptian coral reefs. Local coral bleaching monitoring framework was applied in this study to investigate the threats. The target area included the six richest spots of coral reefs in terms of bio-diversity and tolerance to various stresses. Assessment of the applicability and accuracy of remotely sensed sea surface temperature (SST) data in the region were assessed by comparing them with in situ measurements. The annual and seasonal sea surface temperature (SST) trends have been investigated. Twenty three years (1990-2013) of SST data were used to assure accurate estimation of the monthly maximum mean (MMM) of SST Climatology. In addition, the Hot Spots were calculated for each location during last 23 years. A thermal stress index degree heating weeks (DHW) was calculated in order to assess the accumulative effect of heat stress. This work suggests the bleaching threshold limit for each location based on the long-term analysis. The thermal analysis results were in close agreement with the recorded bleaching events (2010 and 2012). Moreover, they revealed some historical events which may be not recorded properly.