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1.
????GRACE????RL05?????????????????2011??3??11?????9.0???????????????????????1?????6???o?1????????仯?????????????????????????????????????????1??????????????????????????λ???????????????仯???????????????????????????????????????????????????????????仯??????????????4??????????????б仯?????GMT???????????????????????????????????????????仯????????????  相似文献   

2.
???????GPS??GRACE?????????????α???????????????????GRACE???λ???GPS?????????????о?????(RMS)??С?????????????仯????λ???????????????н???????????GPS?????????????仯?????????????????????????????Щ???????????????????????????С?????????????????????????????????????п??????????????????????ó???GRACE?????α????????С????????????????????????????????????????????????GPS??????????????????д??μ??????????????????GPS???????????????о???  相似文献   

3.
????GPSα?????λ???????????????????????????仯????????????????????????α????????????????????????????????????????????????????????ξ?????е??????????????е???????????С?????????????????????????????????????????????????????????,????????仯???????????????仯??????????????????????????????????????????????????α?????λ?б??????????????????  相似文献   

4.
????GRACE?????????????????P3M6?????????????350 km?????????????????????????2004?????????Mw9.3????????????????????????????????????????????????仯??4.6 μGal??????????????仯?????-8.3 μGal???y????????λ????????????????????????????н????????????7 a????????????仯????5.6 μGal?????????仯???|?????????????????仯???0.6 μGal????????仯????11%????????????????????????????????????????????????????????????????????????Ч??????????Σ???????????????仯|???????????????????????????????????????????????????????????μ??????仯????С??  相似文献   

5.
??????????GRACE????????????仯??????????? ??GRACE??????λ??????????????????????????????????????????????????й?????????????????仯???????????800 km??????????ó????????????仯?????  相似文献   

6.
���������񵴼���ģ�ļ���   总被引:1,自引:0,他引:1  
??????????????????(Runge??Kutta)????????PREM??????????????????λ??????????????????????????????200 s??????????????????ε??????????????????????????????????仯???????????????о??????λ???????е?仯?????????????:??????????????????????????????仯?????, 20???????????????μ????????????Dziewonski??Anderson??????, ?????????????0.25%?????  相似文献   

7.
?????????2009??2011??223??GPS?????????????????????????????????????????????????????85??E??43??N??磬??????????????????????????????????????GPS??????????????????????????????????????????????????????2011.08??2012.25?????29??GPS???????????????е????????????仯????????????????????仯????2011.4???????????2011.8????????????????С????????С???????α???????????????в???????????????????????????λ???????????XJKL??????????????????仯??????????仯????????????????????????????????????ε??????????????????嵽????????????仯????6.0?????μ?????????????  相似文献   

8.
????????????????????????????2003??1????2012??11?μ?112????GRACE??????????????2011?????9.0???????????6??????????????????????????Щ?????????????????????????仯????????????:??Tλλ????Trr????Tθλ???? ??????????????н???????????????9.0???????????????????????6?????????????????????????仯????????????仯?????  相似文献   

9.
???¥??GNSS??????????????????????????????μ???????????λ??仯??????????ɡ??????????????λ??仯????????????г??????????¥?????λ????????????????ü????????????????????????????????λ???????????????RMS????3 mm?????????RMS?????7 mm??  相似文献   

10.
?????????????κ?InSAR????????????????????????????????????PSGRN/PSCMP???????????????????????Ms7.1???????????????????α????????????1)???????????????????????????????????????λ??仯????????????????α????????2)????????????????仯??????????????????λ?????Χ???????????????仯???Χ??3)???????????????£?????????????????????????????仯?????????????????????????????????????????????仯?????????????????????????仯?????????????????????仯??  相似文献   

11.
根据1998~2013中国地壳运动观测网络、中国数字地震观测网络工程和中国大陆构造环境监测网络流动重力观测成果,给出了中国西藏及周边地区的重力年变率分布。结合青藏高原冰川消融和高原湖泊水位变化,估算了由陆地水储量变化引起的区域重力效应。基于50km平滑半径的高斯滤波,给出了测区内15a时间尺度的重力变化空间分布,并初步探讨了尼泊尔Ms8.1地震孕育的重力场长期背景趋势变化。结果表明:1)流动重力典型测点的时间序列表现出明显的线性变化特征,表明测点附近区域的长期重力变化以线性上升趋势为主,反映了区域重力逐年累积增加的背景效应;2)中国西藏及周边区域的重力长期变化在空间分布上具有显著的不均匀性和分区现象,这与青藏高原复杂的变形构造和动力学系统密切相关。喜马拉雅活动构造带在15a时间尺度上明显呈正重力变化趋势,可能与印度板块与欧亚板块存在的持续挤压变形引起的地下物质重新分布与调整有关,反映了大震孕育过程中地壳变形和介质变化引起的震区周围应力与能量的累积。  相似文献   

12.
???ù???????????3??????????????????????????????????λ?????????????????????????????????????????о?????????????????????????????????????????????????????????DZW?????????????????????????????????????????????1 200??10 -8 ms -2 /a??????????????????????????????????????????????????峱????????????????????????????ν??з??????????????????в?仯?????????10~15????10 -8 ms -2??????3???4?????????????????????????仯???????о?????????????????????????????????????????????????????????????????????????????????μ?????????????  相似文献   

13.
基于GRACE重力卫星数据,采用改进的组合高斯滤波法和尺度因子法提高数据精度,利用陆地水储量变化原理反演贵州2003-08~2013-07的水储量变化量,并将计算的相对水储量指数作为干旱指标,提出运用游程理论基于相对水储量指数识别干旱历时和干旱烈度,监测分析贵州干旱特征。结果表明,基于GRACE卫星数据获得的相对水储量指数与SPI3变化趋势基本一致;GRACE卫星监测到2003-08~2013-07贵州每年都有干旱事件发生,历时最短为1个月,其中历时≥3个月的干旱事件共9次;干旱强度较大的事件发生在2003~2006年和2009~2011年,其中2006年和2011年水储量亏损较严重,与贵州实际的干旱情况相吻合。  相似文献   

14.
Severe water erosion is notorious for its harmful effects on land-water resources as well as local societies. The scale effects of water erosion, however, greatly exacerbate the difficulties of accurate erosion evaluation and hazard control in the real world. Analyzing the related scale issues is thus urgent for a better understanding of erosion variations as well as reducing such erosion. In this review article, water erosion dynamics across three spatial scales including plot, watershed, and regional scales were selected and discussed. For the study purposes and objectives, the advantages and disadvantages of these scales all demonstrate clear spatial-scale dependence. Plot scale studies are primarily focused on abundant data collection and mechanism discrimination of erosion generation, while watershed scale studies provide valuable information for watershed management and hazard control as well as the development of quantitatively distributed models. Regional studies concentrate more on large-scale erosion assessment, and serve policymakers and stakeholders in achieving the basis for regulatory policy for comprehensive land uses. The results of this study show that the driving forces and mechanisms of water erosion variations among the scales are quite different. As a result, several major aspects contributing to variations in water erosion across the scales are stressed: differences in the methodologies across various scales, different sink-source roles on water erosion processes, and diverse climatic zones and morphological regions. This variability becomes more complex in the context of accelerated global change. The changing climatic factors and earth surface features are considered the fourth key reason responsible for the increased variability of water erosion across spatial scales.  相似文献   

15.
????GRACE????????2002??4??~2004??7?1???20???μ??????????????????????й???????????????????仯???????y????????????????????CPC??????????????????????????????:GRACE????????????????????????????????:???????????????????????????????仯??????12??14 cm????????????С??????????????????????????仯??????????8 cm???????????????????????????仯??С?????????????????????GRACE???????????????????  相似文献   

16.
????GRACE??????????????????????????????????????仯??????????????о??伾????????仯??????????????????仯?????????ж??????????????????????????????仯???????????????δ?????????仯???????о???????????GRACE????????????????????????????仯??????????????cm????Ч???仯??  相似文献   

17.
CDntnbutionNo.3236fromtheInstituteofthenology,ChinaseAcadeInyofSdenas.KeyprojeCt396MandProjeCt4M76274supp0rtedbyNSFC,andabosupportedbypnsident'sboofCh1nereAedernyofSdenas.IwnODUruONThemonsoonisacirculationfeaturethatisplanetaryinscaleandhasanidentiliablesignalregardingitSsubsequentintensitysomeninemonthspriortotheaCtivestageofthesummrmonsoon(WbsterandYang,l992,Vemekar,l994).Furthertnre,thernagnitudeofthemons00n'svariabilityissubstantialandidentifiableoveralargearmindudingthePadficd…  相似文献   

18.
????GRACE??????????????3??????????????2011??07??09????????????????????仯??????????????2009???2010??????????仯??????б???????????2009???о????????????仯??????????μ????????????????????????仯????????4??10 -8 ms -2??????????????????????????????2010??????????仯??С??2011??????????????仯??????????????2009??仯???6??10 -8 ms -2 ????????????????仯???????  相似文献   

19.
????GRACE?????????????2003-01??2010-12?μ???????????????????????й??????????仯??????????????????????????????????????????????????仯??????????????????GRACE??????????仯??????????????????2009-09??2010-04?μ???????????????????????????  相似文献   

20.
全球海水质量季节变化研究   总被引:6,自引:3,他引:3  
海平面变化是海水密度和海水总质量变化的结果,是全球气候变化研究的重要内容之一。利用GRACE卫星观测得到的重力场系数变化资料及重力卫星测高得到的海平面变化扣除由模式得到的热容海平面变化,研究了海水的质量变化。研究结果显示,由这两种方法得到的海水质量变化有非常明显的季节性特征,且其周年振幅和位相非常接近。  相似文献   

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