本文關(guān)鍵詞： 陸態(tài)網(wǎng)絡(luò) 周年形變 溫度變化 熱彈性形變　出處：《測繪學(xué)報》2017年09期 　論文類型：期刊論文

【摘要】：除了地表質(zhì)量重新分布外,地表溫度變化是影響地表周年變化的另一重要成因。本文利用全球溫度變化數(shù)據(jù),基于三維全空間熱彈性形變模型,計算溫度變化在中國大陸引起的地表熱彈性形變,并討論它對中國大陸三維周年位移的影響。結(jié)果表明,溫度變化引起的地表周年變化振幅在毫米量級。中國大陸構(gòu)造環(huán)境監(jiān)測網(wǎng)絡(luò)(簡稱:陸態(tài)網(wǎng)絡(luò))GPS臺站受地表溫度變化影響最大的臺站是HLAR(海拉爾),東向、北向以及垂向的周年振幅矢量和為~2.293mm;影響最小的臺站是HIYS(永暑礁),東向、北向以及垂向的周年振幅矢量和為~0.177mm。為了說明溫度變化對地表周年形變的影響,本文聯(lián)合GRACE以及物質(zhì)負(fù)荷模型(MODEL)研究中國大陸地表三維周年位移。考慮溫度變化后的MODEL、GRACE獲取的地表周年形變在東向、北向、垂向的周年信號分別改進(jìn)了6%、6%、2%;16%、5%、15%。結(jié)果表明,溫度變化是物質(zhì)負(fù)荷以外引起大陸地表形變的重要因素。
[Abstract]:In addition to the surface mass redistribution, the surface temperature variation is another important cause that affects the surface annual variation. In this paper, the global temperature change data are used based on the three-dimensional full-space thermoelastic deformation model. The surface thermoelastic deformation caused by temperature variation in the Chinese mainland is calculated, and its effect on the 3D annual displacement of the Chinese continent is discussed. The amplitude of annual surface variation caused by temperature change is in millimeter order. The sum of the annual amplitude vector in the north and vertical direction is 2.293mm; the station with the least influence is HIYS (fiery reef, eastward, northerly and vertical annual amplitude vector sum = 0.177mm. in order to illustrate the effect of temperature change on the annual deformation of the earth's surface, In this paper, combined with GRACE and mass load model (MODEL), we study the 3D annual displacement of the surface of the Chinese mainland. The annual deformation of the surface obtained by model Grace after taking into account the temperature change has been improved in the east, north and vertical directions, respectively. The results show that, Temperature change is an important factor that causes the surface deformation of the continent outside the material load.
【作者單位】： 中國科學(xué)院上海天文臺;中國科學(xué)院大學(xué);華東師范大學(xué)空間信息與定位導(dǎo)航上海高校工程研究中心;
【基金】：中國大陸構(gòu)造環(huán)境監(jiān)測網(wǎng)絡(luò) 國家自然科學(xué)基金(11373017;11673049;11673050;11273046) 上海市科學(xué)技術(shù)委員會科研計劃(15511101602) 中科院百人計劃 國家高863計劃(2014AA123102) 大地測量與地球動力學(xué)國家重點實驗室開放基金(SKLGED2016-5-1-EZ)~~
【分類號】：P228.4

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