搜索结果: 1-15 共查到“地球物理学 GPS”相关记录144条 . 查询时间(0.186 秒)
2014年鲁甸6.5级地震GPS同震位移及反演分析
鲁甸地震 GPS 同震位移 滑动位移分布
2018/4/9
本文综合GPS流动和连续观测结果，并利用最速下降法（SDM）反演方法，给出并分析了2014年鲁甸6.5级地震同震位移、断层面滑动位移分布特征.GPS同震位移结果表明：此次地震沿北西方向表现出左旋应变释放特征、沿北东向表现出拉张应变释放的同震特征，并且随着离开断裂带距离的增加，拉张变形衰减；受包谷垴—小河断裂控制的左旋剪切应变释放的位移在莲峰、昭通—鲁甸断裂附近较弱，说明该断裂可能没有完全切割昭通—...
2017年8月8日我国四川九寨沟发生里氏7.0级地震.本研究利用基线校正方法获得距震中100 km范围内9个强震台站同震位移，基于Sentinel-1卫星干涉SAR影像对获取了InSAR同震形变场.结合GPS形变数据，本研究进行了震源滑动模型联合反演，结果显示此次地震整体以走滑运动为主，释放地震矩约为7.60×1018N·m（~MW6.52）.通过对比模拟形变场和观测值显示，联合反演结果优于单独基...
陆地水储量的季节性变化是导致地表周期性负荷形变位移的主要因素，有效地剔除地表位移中的陆地水储量影响，是获取地壳构造垂向运动的必要过程.四川地处青藏高原东边缘，地形分区明显，境内以长江水系为主，水资源丰富，研究四川地区地表负荷形变位移，有助于分析陆地水储量的时空分布特性及地壳构造形变信息.本文利用研究区域内59个CORS站的GPS观测数据，计算了CORS站点的垂向位移，并将其与GRACE所得相应结果...
基于GPS和水准数据的2013年芦山7.0级地震震源滑动模型
芦山地震 GPS 水准 滑动模型
2018/5/17
利用GPS连续站和精密水准观测资料得到的同震形变结果作为2013年芦山7.0级地震地表3维形变场的约束，在兼顾不同断层模型方案的基础上对地震震源参数等进行了反演计算，结果表明：以盲逆断层作为反演的断层模型优于以上边界到地表的断层作为反演的断层模型的结果，矩形盲逆与铲状盲逆断层模型间的反演结果没有明显的差异，芦山地震矩的最佳反演结果为MW6.7，位错在断层面上的分布集中在30km×30km的范围内，...
利用青藏高原东北缘及周缘地区1999-2007年和2009-2014年2个时段的GPS水平运动速度场做约束，反演获取了海原-六盘山断裂带的闭锁程度和滑动速率亏损的时空分布演化。结果表明，海原断裂带以左旋走滑亏损为主，六盘山断裂北段以逆冲倾滑速率亏损为主，南段则以正向倾滑为主。其中，毛毛山断裂和老虎断裂西段在2个时段的闭锁深度都达到25km，最大左旋滑动亏损为6mm/a。老虎山东段和海原断裂（狭义）...
GPS 16参数广播星历改进参数的变化规律分析
GPS 广播星历 最小二乘 周期性
2018/5/4
在2004年发布的GPS界面接口控制文档中提出一种对GPS 16参数广播星历进行改进的GPS 18参数广播星历.本文介绍了GPS 16参数广播星历的拟合算法，对两类GPS广播星历参数进行比较，分析了改进参数的变化规律及特性.计算结果表明，GPS 16参数广播星历的改进参数具有明显的约12h和13.5d的周期变化特性，新提出的GPS 18参数广播星历能够更好地逼近GPS卫星真实轨道.
OPEN-SOURCE DIGITAL ELEVATION MODEL (DEMs) EVALUATION WITH GPS AND LiDAR DATA
Digital Elevation Model inundation mapping vertical accuracy LiDAR scale factor coastal inundation risk assessment
2016/10/14
Advanced Spaceborne Thermal Emission and Reflection Radiometer-Global Digital Elevation Model (ASTER GDEM), Shuttle Radar Topography Mission (SRTM), and Global Multi-resolution Terrain Elevation Data ...
EFFECT OF THE X5.4 CLASS SOLAR FLARE EVENT OF SOLAR CYCLE 24 ON THE GPS SIGNAL RECEPTION IN PENINSULAR MALAYSIA
Solar Flare GPS MyRTKnet Total Electron Content Ionospheric Delay
2016/10/14
In this paper, we examine the effect of solar flare event on the Global Positioning System (GPS) signal reception in Peninsular Malaysia during the X5.4 class solar flare on 7th March 2012, 00:24 UT a...
ESTIMATION OF CO- AND POSTSEISMIC DEFORMATION AFTER THE Mw 8.6 NIAS-SEMEULUE AND Mw 8.5 BENGKULU EARTHQUAKES FROM CONTINUOUS GPS DATA
GPS earthquake postseismic deformation
2016/10/14
The Mw 8.5 Bengkulu earthquake of 30 September 2007 and the Mw8.6 28 March 2005 are considered amongst large earthquake ever recorded in Southeast Asia. The impact into tectonic deformation was record...
PRELIMINARY ESTIMATION OF POSTSEISMIC DEFORMATION PARAMETERS FROM CONTINUOUS GPS DATA IN KOREA PENINSULA AND IEODO AFTER THE 2011 TOHOKU-OKI MW9.0 EARTHQUAKE
Korea Peninsular Tohoku-Oki earthquake postseismic deformation
2016/10/14
This paper describes utilization of GPS data in Korea Peninsula and IEODO ocean research station for investigation of postseismic deformation characteristic after the 2011 Tohoku-oki Mw9.0 Earthquake....
First GPS measurements across the Central-Western Mediterranean area
GPD Mediterranean geodynamics
2015/10/8
This paper concerns the displacement field of the central-western part of the Mediterranean basin estimated by the analysis of three repeated GPS surveys (1995, 1996 and 1997) consisting of 8 sites of...
Displacement pattern of the Sinai area: first results from GPS
Sinai Gulf of Suez Aqaba-Levant fault GPS displacements
2015/10/8
A network of 12 GPS stations, seven of them located on the Sinai peninsula, another four on the west shore of the Gulf of Suez and the last on the inner Gulf of Aqaba (ELAT, Israel) was analyzed twice...
Coseismic displacement of the 27th September 1997 Umbria - Marche (Italy) earthquakes detected by GPS: campaigns and data
Umbria-Marche earthquakes IGM95 GPS coseismic displacement
2015/9/30
On September 26,1997 two earthquakes of Mw 5.7 (00.33 GMT) and Mw 6.0 (9.40 GMT), occurred in the Umbria-Marche region (Central Apennines, Italy). The epicentres were located in an area of the Apennin...
True or false GPS-derived deformations?
Deformation analysis GPS networks igm 95 rome area
2015/9/28
In this paper we focus on the question whether GPS networks born with cartographic aims can be safely used in crustal deformation control. We carried out a test on a network of five vertices located i...
Geodetic deformations in the Central-Southern Apennines (Italy) from repeated GPS surveys
Geodesy GPS central-southern apennines strain rate seismotectonic
2015/9/28
We computed the horizontal strain rate field for a sector of tbc Central-Southern Apennines (Italy) from GPS data collected during yearly repeated campaigns performed from 1994 to 2000 on tbc GeoModAp...