本文選題：非潮汐海洋負載效應(yīng)　切入點：近海岸區(qū)域　出處：《大地測量與地球動力學》2016年11期

【摘要】：根據(jù)均勻分布在全球各大洲的IGS測站信息,選取105個數(shù)據(jù)質(zhì)量良好的近海岸測站以及29個內(nèi)陸測站,利用ECCO發(fā)布的海底壓力數(shù)據(jù)計算得到由非潮汐海洋負載引起的IGS測站位置N、E、U方向上的位移。分析了由地理位置差異導(dǎo)致的測站受非潮汐海洋負載效應(yīng)的影響存在的差異,并修正了SOPAC提供的IGS測站坐標時間序列,探討了非潮汐海洋負載效應(yīng)引起的測站位移對近海岸測站坐標時間序列的影響。結(jié)果表明,近海區(qū)域(50km)測站受到非潮汐海洋負載影響U方向平均量級為5mm,遠大于內(nèi)陸(500km)測站U方向的影響;經(jīng)過非潮汐海洋負載修正,71%的測站高程坐標時間序列RMS值得以減小,其中最大可使RMS值降低13%;大西洋、太平洋西海岸受其影響比東海岸大,考慮到其受非潮汐海洋負載效應(yīng)影響顯著,使用大西洋與太平洋西海岸地區(qū)測站坐標時間序列前必須進行非潮汐海洋負載修正。
[Abstract]:According to the information of IGS stations distributed uniformly on all continents, 105 offshore stations with good data quality and 29 inland stations are selected.The displacement of the position of the IGS station is calculated by using the pressure data released by ECCO in the direction of the IGS station caused by the non-tidal ocean load.In this paper, the difference between the stations caused by the geographical location difference under the influence of the non-tidal ocean load effect is analyzed, and the coordinate time series of the IGS station provided by SOPAC are corrected.The influence of the station displacement caused by the non-tidal ocean load effect on the coordinate time series of the offshore stations is discussed.The results show that the average value of U direction is 5mm, which is much larger than that of inland station (500km), and the RMS of the time series of elevation coordinates of 71% of the stations corrected by the non-tidal ocean load is worth reducing.The largest of these decreases the RMS value by 13 percent; the west coast of the Atlantic and Pacific Ocean is affected more than the east coast, considering that it is significantly affected by non-tidal ocean load effects,Non-tidal ocean load correction must be carried out before using the time series of station coordinates in the west coast of the Atlantic and Pacific Ocean.
【作者單位】： 武漢大學GNSS研究中心;武漢大學測繪學院;
【基金】：國家自然科學基金(41374033)~~
【分類號】：P228.4;P229

【相似文獻】

相關(guān)期刊論文 前6條

1 鄭艷麗;聶桂根;任永超;;2009年7月22日武漢IGS站日食電離層異常分析[J];大地測量與地球動力學;2010年03期

2 劉俊鵬;李凱鋒;任來平;鄧凱亮;;基于Track分析日本3·11地震對周圍IGS站的影響[J];海洋測繪;2014年01期

3 匡翠林;鄒璇;李陶;;利用IGS數(shù)據(jù)產(chǎn)品進行高精度GPS觀測數(shù)據(jù)仿真[J];系統(tǒng)仿真學報;2007年12期

4 岳迎春;明祖濤;俞艷;;南極長城站與IGS站組網(wǎng)解算的最佳站數(shù)探討[J];測繪科學;2009年04期

5 倪蓉蓉;王慶;潘樹國;趙興旺;;IGS服務(wù)數(shù)據(jù)專用FTP客戶端設(shè)計與實現(xiàn)[J];測繪科學;2011年06期

6 ;[J];;年期

，

本文編號：1726537