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1.
月球重力场探测是了解月球内部结构构造最有效的手段之一,也是未来登陆点选择的重要依据.在众多方法中,卫星重力探测是进行全月球覆盖以及获得月球深部信息的重要方法.本文叙述了当前月球重力探测历史和重力模型发展过程,并对这些模型进行比较分析.在了解前沿研究方法的基础上讨论了月球重力位场解算的基本原理、高精度月球重力场获得的方法...  相似文献   

2.
为研制高精度航空重力仪,开展了高精度航空重力仪分项指标设计与分析,为高精度航空重力测量系统设计提供依据。笔者基于航空重力测量的数学模型,归纳出影响航空重力测量的主要因素;结合航空重力测量的相关理论公式,使用理论模型,推导出各影响因素的误差模型;开展了各项误差的分析研究,并通过设定合理的分项指标精度来有效地控制分项误差,确保航空重力测量精度优于0.6×10-5m/s2。  相似文献   

3.
This paper provides a brief overview of two linear inverse problems concerned with the determination of the Earth’s interior: inverse gravimetry and normal mode tomography. Moreover, a vector spline method is proposed for a combined solution of both problems. This method uses localised basis functions, which are based on reproducing kernels, and is related to approaches which have been successfully applied to the inverse gravimetric problem and the seismic traveltime tomography separately.  相似文献   

4.
在航空重力测量的后期资料处理中,GPS技术主要作用是精确确定飞机的位置、速度和加速度,以提供可靠的飞机飞行参数和必要的重力加速度改正等.笔者以航空重力领域的实际需求,开发了航空重力的GPS后处理软件-EGPS.该软件能够利用伪距差分、多普勒频移的方法解算航空重力测量的载体位置、速度和加速度等.通过处理航空重力测量中GPS资料的速度解算实例,并与国外已经先进的航空重力测量处理软件的速度解算结果对比、分析,EGPS已经基本达到了航空重力测量领域对GPS速度高精度解算的要求.  相似文献   

5.
对含氟电气石单矿物金分析中氟对铝的影响及电气石中化合水的测定条件进行了试验,证实在F^-存在下用铬天青S光度法测定铝,结果严重偏低,改用KF取代-EDTA滴定法可获得满意结果。对电气石中化合水的测定条件进行了对照,并莳矿物中的杂质元素进行了分析,保证了结果的准确性。  相似文献   

6.
航空重力测量以飞机为载体对重力场数据进行采集.由于气流、飞行状态及机体自身振动等因素的影响,航空重力测量原始数据含有大量的噪声,信噪比高达上万级分之一,因此从原始测量数据中获取弱小重力信号成为航空重力测量系统发展的一个技术难题.本文针对航空重力测量系统将通用卡尔曼滤波公式进行了适应性调整,建立了航空重力异常的数学模型,...  相似文献   

7.
高岭土中全硫量快速测定方法   总被引:13,自引:1,他引:13  
王瑞斌 《岩矿测试》2006,25(1):82-84
采用碳酸钠一氧化镁半熔融一氯化钡滴定法测定高岭土中的硫含量。试样用碱性熔荆半熔,熔块以水浸取,将转化为硫酸盐后的滤液,以玫瑰红酸钠为指示剂,在pH为5.5.7.0的条件下,用氯化钡标准溶液进行滴定。测定结果的RSD=2.47%(n=5),加标回收率为95.2%-100.3%。改进后的方法已用于高岭土中全硫量的测定,结果与国标重量法相符。  相似文献   

8.
范福南  邢富  范秀娥 《岩矿测试》2002,21(3):219-222
利用BaSO4在高热H2 SO4中能定量地形成液态Ba(HSO4) 2 ,而当含Ba(HSO4) 2 的浓H2 SO4溶液被稀释时 ,又能重新定量析出BaSO4这一性质 ,拟定出高热H2 SO4溶解重量法测定矿石中的钡。方法用于矿石、重晶石单矿物中BaO和BaSO4的测定 ,结果与碱熔BaSO4重量法、BaCrO4容量法、外检结果相一致 ,精密度试验结果 ,相对标准偏差RSD(n =1 0 ) <5 %。  相似文献   

9.
深海沉积物中化合水的测定   总被引:1,自引:2,他引:1  
毛海燕  夏月莲 《岩矿测试》1997,16(3):174-176
针对用双球管重量法测定化合水(H2O+)时试样中的Cl-对测定严重干扰,考察了用浸洗样品除Cl-以及校正双球管中冷凝水(H2O±)中Cl-的两种消除Cl-干扰的方法。实验证明,两种方法均可行,但后者更具有实用性,测定结果准确、精密度较好。所拟方法对新研制的GSMS_2和GSMS_3两个深海沉积物标准物质的化合水进行测定,结果与初定值相符。  相似文献   

10.
Gravity data were analysed in the Northern Tunisian Atlas (case study of Oued Zarga area) to better understand the organization of its underlying structures. The gravity data analysis included the construction of a gravity anomaly maps and two and a half dimensional gravity model. The qualitative analysis of gravimetric maps served for the foundation of a new structural map of the study region that constitutes a new contribution of the gravimetry in this present work. In addition, the complete Bouguer and residual gravity anomaly maps indicate a negative gravity anomaly over the Triassic evaporitic outcrops of Jebel Guerouaou and prominent NE?CSW-trending features associated with the boundary of the Triassic rocks and surrounded layers. A NW?CSE-trending gravity model that crosses the Triassic evaporitic outcrop at Jebel Guerouaou can be explained by a deep-rooted salt diapir.  相似文献   

11.
Milyukov  V. K.  Vlasov  I. Yu.  Sazhin  M. V.  Sazhina  O. S.  Sementsov  V. N. 《Astronomy Reports》2020,64(5):447-457
Astronomy Reports - The theory of relativistic reductions for future challenges of space gravimetry with target accuracy of up to 1 picometer is developed in this paper.  相似文献   

12.
Eppelbaum  L. V.  Katz  Y. I. 《Geotectonics》2020,54(2):266-283
Geotectonics - Satellite gravimetry is recognized now as powerful and reliable tool for regional tectono-geodynamic zonation. The studied region contains intricate geodynamical features (high...  相似文献   

13.
岩石矿物中化合水的测定   总被引:1,自引:0,他引:1  
杨翼华 《岩矿测试》1998,17(3):211-215
对岩矿中化合水的测定进行述评,包括以平菲耳特法为主的重量法、卡尔·费休容量法、电量法、气相色谱法和一些其它方法。引用文献47篇。  相似文献   

14.
评论了航空重力测量和航空磁测观测技术,认为重力和磁力勘探进入一个新时期的标志是:航空矢量磁测、全张量磁力梯度测量、航空重力测量、重力梯度测量和无人飞行器地球物理探测。  相似文献   

15.
The airborne gravimetry was an important leap and innovation in the world’s history of geophysical exploration. China's first test of the airborne gravity geological survey in the onshore-offshore transitional area of the western and southern part of the Bohai Sea was successful and effective in geology. Based on the airborne gravity data, and combining previous ground gravity, seismic and drilling data etc., we carried out the geological interpretation by forward and inverse methods. The result shows that the airborne Bouguer gravity anomaly was clear, the fracture interpretation was reliable, and the inversion depth of the main geological interfaces was relatively accurate. This airborne gravity geological survey not only filled the exploring gaps in the onshore-offshore transitional area, and realized the geological and tectonic junction between the sea and the land, but also discovered four local gravity anomalies, 11 fractures and three sags or subsags, and so on. The good geological effect of airborne gravimetry not restricted by terrain condition shows that it can be served as a new geophysical method in the exploration of complex terrain physiognomy area such as mountain, jungle, desert, marsh, onshore-offshore transitional area and so on, and has an extensive application prospect in China in the future.  相似文献   

16.
李继乐 《岩矿测试》1997,16(2):81-86
用差热和热(失)重法、pH值检验、离子色谱等分析方法考察和证实了Cl-对平菲尔特管重量法测定化合水(H2O+)的干扰,研究其影响规律,提出用系数校正方法可获得H2O+的准确结果。方法用于含氯深海沉积物和大洋多金属结核标准物质中H2O+的定值分析,取得满意结果  相似文献   

17.
The scientific educational practice on gravimetry for the second-year students of the geophysical specialty in 2012–2013 was executed in Central Russia (Kaluga region, the Village of Aleksandrovka). It allowed us to provide an educational process with modern high-precision gravimeters and to fully preserve the curricula and to add elements of topography and geodesic practice. Over these 2 years reliable facts and data were received, which illustrated the possibilities of high-precision gravity measurements in studying the sedimentary cover features of a geological structure.  相似文献   

18.
We have jointly analysed space gravimetry data from the GRACE space mission, satellite altimetry data and precipitation over the East African Great Lakes region, in order to study the spatiotemporal variability of hydrological parameters (total water storage, lake water volume and rainfall). We find that terrestrial water storage (TWS) from GRACE and precipitation display a common mode of variability at interannual time scale, with a minimum in late 2005, followed by a rise in 2006–2007. We argue that this event is due to forcing by the strong 2006 Indian Ocean Dipole (IOD) on East African rainfall. We also show that GRACE TWS is linked to the El Niño-Southern Oscillation cycle. Combination of the altimetry-based lake water volume with TWS from GRACE over the lakes drainage basins allows estimating soil moisture and groundwater volume variations. Comparison with the WGHM hydrological model outputs is performed and discussed.  相似文献   

19.
A map of the tectonic zoning of the sedimentary cover in the Deryugin Basin area was constructed based on the structural data. For this purpose, a structural-tectonic map of the sedimentary cover was compiled using CDP seismic reflection and gravimetry data. Depending on the size, spatial position, and orientation, the structural elements of different orders were grouped into tectonic systems. The latters were subdivided into structural zones consisting of higher order structural elements in the form of relative rises and troughs. The corresponding maps and schemes are also presented in this paper.  相似文献   

20.
张赤军 《地学前缘》2002,9(2):393-400
介绍了全球垂直基准 (GVD)在监测与全球变化有关的海平面变化、现今地壳运动中的作用 ,论及GVD与国际地球参考架 (ITRF)的关系 ,对如何建立全球垂直基准及其精度作了讨论。研究表明只要按文中的方法进行卫星激光测距 (SLR)、全球定位系统 (GPS)观测与重力测量 ,则可使全球垂直基准比现今世界各地高程之差约 2m要提高一个数量级。  相似文献   

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