本文選題：接收函數(shù)　切入點(diǎn)：頻率域　出處：《云南大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

【摘要】：接收函數(shù)是目前比較流行,非常有力的研究地殼和上地幔的工具。其基本原理是通過反褶積將復(fù)雜的遠(yuǎn)震體波轉(zhuǎn)換成尖脈沖,從而方便精確地識(shí)別轉(zhuǎn)換波的到時(shí)。因此接收函數(shù)類似于數(shù)學(xué)中的格林函數(shù)。然而國內(nèi)現(xiàn)在的接收函數(shù)程序大多從國外引進(jìn),本文的一個(gè)重要?jiǎng)訖C(jī)就是獨(dú)立自主地編制頻域的接收函數(shù)并進(jìn)行測試。 從接收函數(shù)的運(yùn)用來講,主要集中在多事件疊加,很少運(yùn)用單事件計(jì)算。多事件疊加的優(yōu)點(diǎn)在于能去除干擾和噪聲,缺點(diǎn)是必須事先利用一個(gè)參考模型來動(dòng)校正。由于參考模型未必反映研究區(qū)域的真實(shí)模型,動(dòng)校正會(huì)有誤差,導(dǎo)致多事件疊加的波形失真。因此,本文采取單事件來研究,相應(yīng)的缺點(diǎn)是震相識(shí)別有一定困難。 云南地處青藏高原東南緣,是古特提斯洋東緣地帶,地震頻發(fā),地質(zhì)情況復(fù)雜,是研究陸陸碰撞的天然理想場地。我們用接收函數(shù)獲取了云南地殼厚度和泊松比。結(jié)果表明：云南地區(qū)的Moho面深度與地表海拔具有的相關(guān)性,總體呈北厚南薄的特點(diǎn),可以用重力均衡理論加以解釋。云南的三個(gè)火山區(qū)表現(xiàn)出高泊松比,在物理上是合理的。與四川盆地相鄰地區(qū),泊松比較低。沿紅河斷裂分布三個(gè)高泊松比區(qū),證明了該斷裂具有流變特性。
[Abstract]:The receiving function is a popular and powerful tool for studying the crust and upper mantle. Its basic principle is to convert complex teleseismic body waves into sharp pulses by deconvolution. Therefore, the receiving function is similar to the Green's function in mathematics. However, most of the current domestic receiving function programs are imported from abroad. An important motivation of this paper is to independently compile and test the frequency domain reception function. In terms of the application of the receiving function, it is mainly concentrated in the multi-event superposition, and the single event calculation is seldom used. The advantage of the multi-event superposition is that it can remove the interference and noise. The drawback is that a reference model must be used for NMO correction in advance. Because the reference model does not necessarily reflect the real model of the study area, the NMO will have errors, resulting in the waveform distortion of multi-event superposition. The corresponding drawback is that it is difficult to identify the seismic phase. Yunnan is located in the southeastern margin of the Qinghai-Tibet Plateau. It is the eastern margin of the ancient Tethys, with frequent earthquakes and complicated geological conditions. The results show that the depth of the Moho surface in Yunnan is correlated with the elevation of the surface, and the thickness of the crust is thin in the north. It can be explained by the theory of gravity equilibrium. The three hot mountain areas in Yunnan show high Poisson ratio, which is reasonable in physics. Poisson is relatively low in the adjacent area of Sichuan Basin, and distributes in three high Poisson ratio areas along the Red River fault. It is proved that the fracture has rheological properties.
【學(xué)位授予單位】：云南大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：P315.2

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 孔祥儒,劉士杰,竇秦川,張建軍,蘇先英,李宗舜,周成炳;攀西地區(qū)地殼和上地幔中的電性結(jié)構(gòu)[J];地球物理學(xué)報(bào);1987年02期

2 劉啟元,RainerKind,李順成;中國數(shù)字地震臺(tái)網(wǎng)的接收函數(shù)及其非線性反演[J];地球物理學(xué)報(bào);1997年03期

3 吳慶舉,曾融生;用寬頻帶遠(yuǎn)震接收函數(shù)研究青藏高原的地殼結(jié)構(gòu)[J];地球物理學(xué)報(bào);1998年05期

4 吳建平,明躍紅,王椿鏞;云南數(shù)字地震臺(tái)站下方的S波速度結(jié)構(gòu)研究[J];地球物理學(xué)報(bào);2001年02期

5 高星,王衛(wèi)民,姚振興;中國及鄰近地區(qū)地殼結(jié)構(gòu)[J];地球物理學(xué)報(bào);2005年03期

6 吳慶舉;李永華;張瑞青;張乃鈴;;用多道反褶積方法測定臺(tái)站接收函數(shù)[J];地球物理學(xué)報(bào);2007年03期

7 李永華;吳慶舉;田小波;張瑞青;潘佳鐵;曾融生;;用接收函數(shù)方法研究云南及其鄰區(qū)地殼上地幔結(jié)構(gòu)[J];地球物理學(xué)報(bào);2009年01期

8 張洪雙;田小波;滕吉文;;接收函數(shù)方法估計(jì)Moho傾斜地區(qū)的地殼速度比[J];地球物理學(xué)報(bào);2009年05期

9 張洪雙;田小波;滕吉文;;穩(wěn)定的頻率域提取接收函數(shù)方法研究[J];地球物理學(xué)報(bào);2009年10期

10 劉啟元，李順成;接收函數(shù)復(fù)譜比的最大或然性估計(jì)及非線性反演[J];地球物理學(xué)報(bào);1996年04期

，

本文編號(hào)：1636966