發(fā)布時(shí)間：2018-03-22 10:15

  本文選題：機(jī)載波譜儀　切入點(diǎn)：海浪　出處：《海洋學(xué)報(bào)》2016年11期 　論文類型：期刊論文

【摘要】：基于北京遙測(cè)技術(shù)研究所機(jī)載波譜儀實(shí)測(cè)數(shù)據(jù)以及ECMWF提供的風(fēng)場(chǎng)數(shù)據(jù),分析了不同風(fēng)速條件下小入射角海浪平均后向散射系數(shù)不對(duì)稱性與各向異性隨入射角的變化特性,并對(duì)導(dǎo)致這一現(xiàn)象的原因進(jìn)行了初步分析。結(jié)果表明:小入射角下,海浪平均后向散射系數(shù)隨入射角增大呈現(xiàn)遞減趨勢(shì)并在18°時(shí)達(dá)到某一穩(wěn)定值,之后基本維持不變;海浪后向散射系數(shù)不對(duì)稱性與各向異性均隨入射角增大呈現(xiàn)遞增趨勢(shì),同樣在18°增大至某一穩(wěn)定值,之后基本維持不變;低風(fēng)速條件下,海浪不對(duì)稱性和各向異性與風(fēng)速有關(guān),且風(fēng)速越大不對(duì)稱性與各向異性越明顯。
[Abstract]:Based on the measured data from the carrier spectrometer of Beijing Telemetry Institute and the wind field data provided by ECMWF, the asymmetry and anisotropy of the average backscattering coefficient of the small incident angle waves with different wind speeds are analyzed, and the variation characteristics of the asymmetry and anisotropy with the incident angle are analyzed. The results show that the average backscatter coefficient decreases with the increase of incident angle and reaches a certain stable value at 18 擄, and then remains unchanged. The asymmetry and anisotropy of wave backscattering coefficient show an increasing trend with the increase of incident angle, and increase to a certain stable value at 18 擄, and then remain unchanged, while at low wind speed, wave asymmetry and anisotropy are related to wind speed. The asymmetry and anisotropy of wind speed are more obvious.
【作者單位】： 中國(guó)石油大學(xué)(華東)地球科學(xué)與技術(shù)學(xué)院;國(guó)家海洋局第一海洋研究所;北京遙測(cè)技術(shù)研究所;
【基金】：國(guó)家863計(jì)劃(SS2013AA091206) 國(guó)家自然科學(xué)基金青年基金(2013AA09A505,41406197)
【分類號(hào)】：P715.7

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本文編號(hào)：1648206