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(cè)量海底壓力和聲波從海底到海面的傳播時(shí)間。海底壓力和聲波傳播時(shí)間分別被用來估計(jì)水體質(zhì)量變化(正壓)和比容變化(斜壓)對(duì)海面高度距平的貢獻(xiàn)。對(duì)由PIES在日本海西南海域現(xiàn)場(chǎng)觀測(cè)數(shù)據(jù)得到的海面高度距平(PIES SLA)與衛(wèi)星高度計(jì)海面高度距平(Sat SLA)進(jìn)行了比較研究。利用相關(guān)分析法,對(duì)PIES SLA和沿軌T/P衛(wèi)星、沿軌ERS-2衛(wèi)星測(cè)得的海面高度距平(TP SLA、ERS-2 SLA)進(jìn)行了比較;對(duì)PIES SLA和AVISO網(wǎng)格化海面高度距平進(jìn)行了比較,估計(jì)可能的誤差來源,并分析PIES SLA正壓部分和斜壓部分對(duì)SLA的貢獻(xiàn)。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(duì)特定區(qū)域和特定站點(diǎn)產(chǎn)生誤差可能的原因進(jìn)行了進(jìn)一步的探討。通過研究,有以下結(jié)論:(1)相對(duì)于灣流和黑潮地區(qū),這一區(qū)域正壓部分對(duì)海面高度的貢獻(xiàn)相對(duì)較大;(2)如果再考慮斜壓變化對(duì)海面高度的貢獻(xiàn),PIES SLA和Sat SLA相關(guān)系數(shù)會(huì)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(duì)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(hào)(HY-2)等衛(wèi)星高度計(jì)的校驗(yàn)提供一種可靠的方式。該研究對(duì)于PIES的研發(fā)和設(shè)計(jì)以及對(duì)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(dòng)重點(diǎn)實(shí)驗(yàn)室;青島海洋科學(xué)與技術(shù)國家實(shí)驗(yàn)室海洋動(dòng)力過程與氣候功能實(shí)驗(yàn)室;
【基金】：中國科學(xué)院“百人計(jì)劃”(Y32109101L);中國科學(xué)院方向項(xiàng)目(KZCX2-EW-209) 國家自然科學(xué)基金項(xiàng)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(shí)創(chuàng)新項(xiàng)目(Y22114101Q)~~
【分類號(hào)】：P714

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