發(fā)布時間：2018-04-23 14:22

  本文選題：海面高度距平 + 壓力傳感逆式回聲儀(PIES)　； 參考：《海洋科學(xué)》2016年02期

【摘要】：壓力傳感逆式回聲儀(pressure-sensor-equipped inverted echo sounders,PIES)可以用來測量海底壓力和聲波從海底到海面的傳播時間。海底壓力和聲波傳播時間分別被用來估計水體質(zhì)量變化(正壓)和比容變化(斜壓)對海面高度距平的貢獻。對由PIES在日本海西南海域現(xiàn)場觀測數(shù)據(jù)得到的海面高度距平(PIES SLA)與衛(wèi)星高度計海面高度距平(Sat SLA)進行了比較研究。利用相關(guān)分析法,對PIES SLA和沿軌T/P衛(wèi)星、沿軌ERS-2衛(wèi)星測得的海面高度距平(TP SLA、ERS-2 SLA)進行了比較;對PIES SLA和AVISO網(wǎng)格化海面高度距平進行了比較,估計可能的誤差來源,并分析PIES SLA正壓部分和斜壓部分對SLA的貢獻。比較發(fā)現(xiàn),PIES SLA和Sat SLA的相關(guān)系數(shù)較高,且均方根誤差較小,并且對特定區(qū)域和特定站點產(chǎn)生誤差可能的原因進行了進一步的探討。通過研究,有以下結(jié)論:(1)相對于灣流和黑潮地區(qū),這一區(qū)域正壓部分對海面高度的貢獻相對較大;(2)如果再考慮斜壓變化對海面高度的貢獻,PIES SLA和Sat SLA相關(guān)系數(shù)會有所提升;(3)在高能區(qū)PIES SLA和Sat SLA相關(guān)系數(shù)較高,符合得相對比較好�？偟膩碚f,在日本海地區(qū),PIES SLA和Sat SLA相關(guān)系數(shù)較高,具有較高的一致性,能為我國海洋二號(HY-2)等衛(wèi)星高度計的校驗提供一種可靠的方式。該研究對于PIES的研發(fā)和設(shè)計以及對于PIES的布放位置的選擇都有一定的借鑒意義。
[Abstract]:The pressure-sensor-equipped inverted echo sounders (PIESs) can be used to measure the pressure and the propagation time of sound waves from the sea floor to the sea surface. Seabed pressure and acoustic propagation time are used to estimate the contribution of water mass variation (barotropic pressure) and specific volume variation (baroclinic pressure) to sea height anomaly respectively. In this paper, the sea surface height anomaly obtained by PIES in the southwest sea area of Japan is compared with that of satellite altimeter sea surface height anomaly. Using correlation analysis method, the sea surface height anomaly TP SLAERS-2 obtained by PIES SLA and orbiting T / P satellite and ERS-2 satellite along orbit are compared, and the PIES SLA and AVISO grid sea surface height anomalies are compared to estimate the possible sources of errors. The contribution of barotropic and baroclinic parts of PIES SLA to SLA is analyzed. It is found that the correlation coefficients of Pies SLA and Sat SLA are higher and the root mean square error is small. The possible causes of errors in specific regions and stations are also discussed. From the study, there is the following conclusion: 1) relative to the Gulfstream and the Kuroshio region, If we consider the contribution of baroclinic variation to sea surface height, the correlation coefficients of Pies SLA and Sat SLA will be increased. The correlation coefficients of PIES SLA and Sat SLA are higher in high energy region. The match is relatively good. In general, the correlation coefficients of Pies SLA and Sat SLA are relatively high in the Sea of Japan area, which can provide a reliable way for the calibration of satellite altimeters such as HY-2. This research has some reference significance for the research and design of PIES and the choice of placement position of PIES.
【作者單位】： 中國科學(xué)院海洋研究所;中國科學(xué)院大學(xué);中國科學(xué)院海洋環(huán)流與波動重點實驗室;青島海洋科學(xué)與技術(shù)國家實驗室海洋動力過程與氣候功能實驗室;
【基金】：中國科學(xué)院“百人計劃”(Y32109101L);中國科學(xué)院方向項目(KZCX2-EW-209) 國家自然科學(xué)基金項目(41376028) 國家海洋局(全球變化與海氣相互作用)及中國科學(xué)院知識創(chuàng)新項目(Y22114101Q)~~
【分類號】：P714

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