本文關鍵詞： 溫排水 遙感監(jiān)測 地面調(diào)查 HJ-B 大亞灣核電站　出處：《光譜學與光譜分析》2014年11期 　論文類型：期刊論文

【摘要】：以大亞灣核電站附近海域為研究區(qū),基于HJ-1B衛(wèi)星熱紅外遙感數(shù)據(jù)IRS4,對核電站溫排水空間分布特征進行了識別與驗證。首先利用時空插值后的NCEP大氣廓線數(shù)據(jù),結合近地面氣象觀測信息對IRS4數(shù)據(jù)進行大氣訂正;其次查找表數(shù)據(jù)建立IRS4寬通道輻亮度與輻射溫度轉(zhuǎn)換公式,完成研究區(qū)海表溫度反演。利用溫鹽深測量儀,與衛(wèi)星同步采集了84個離散點的水溫,經(jīng)空間插值獲得地面調(diào)查海水"體溫度"(bulk temperature,BT)的分布,并與海表溫度(sea surface temperature,SST)反演結果進行了對比。結果表明,調(diào)查區(qū)平均BT比平均SST高0.47℃。在遠離熱排放口區(qū)域,SST高于BT,兩者差異在1.0℃以內(nèi);在靠近熱排放口區(qū)域,SST低于BT,并且越接近排放口兩者之間差距越大。遙感與地面調(diào)查兩種手段獲得的溫升分布基本一致,總溫升區(qū)域面積相近。遙感手段獲得的溫升等級較少(小于4級),地面調(diào)查獲得溫升等級較多(大于5級);后者高溫升等級(2級以上)區(qū)域面積較大,但對于1級溫升區(qū)面積而言,兩種手段差異較小。上午10時左右海表BT與SST差異較小,"膚-體"溫差效應可以忽略,在IRS4業(yè)務化SST應用中,這一時段的衛(wèi)星遙感可以作為核電站溫排水分布監(jiān)測的常規(guī)手段。
[Abstract]:Taking the sea area near Daya Bay Nuclear Power Station as the research area, based on HJ-1B satellite thermal infrared remote sensing data IRS4. The spatial distribution characteristics of temperature and drainage in nuclear power station are identified and verified. Firstly, the NCEP atmospheric profile data after spatiotemporal interpolation are used to correct the IRS4 data in combination with the near-surface meteorological observation information. Secondly, the conversion formula of radiance and radiance temperature of IRS4 wide channel is established, and the inversion of sea surface temperature in the study area is completed. The temperature of 84 discrete points is collected synchronously with the satellite by using the temperature and salt depth measuring instrument. The distribution of bulk temperature in seawater was obtained by spatial interpolation. The results are compared with the inversion results of sea surface temperature. The average BT in the investigation area was 0.47 鈩，

本文編號：1488348