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270篇 您的检索式:作者名="Parrot"
    题名 作者 年代 出处 被引量
1基于DEM的平原区人工微地貌数字提取方法探讨显示文摘针对江汉平原区堤垸人工微地貌,综合局部地形分析、水流模拟分析以及GIS空间分析和地统计分析方法,利用SRTM DEM数据进行微地貌自动提取研究。根据人工微地貌特点,构建一种局部地形形态分析方法来对结构线位置进行标示,并提出一种流域合并的方法来进行微地貌结构线提取;进而综合上述两种方法的计算结果,提出平原区人工微地貌的组合提取方法。研究结果表明该方法可较好实现平原区垸堤人工微地貌结构线提取。肖飞 杜耘 Parrot J F 王学雷 严翼 2011地理科学2011,31,6:9
2SNR changes of VLF radio signals detected onboard the DEMETER satellite and their possible relationship to the Wenchuan earthquake显示文摘Here we used the VLF signal data received by the DEMETER satellite, transmitted from various ground VLF transmitters which are located around China, to study the changes in the signal to noise ratio (SNR) before and after the Wenchuan earthquake, which had a magnitude of 8.0. We also found that the SNRs of different frequency signals decreased significantly over the epicenter region before the earthquake, and reverted to their original levels after the earthquake. This phenomenon may be related to the earthquake.M. Parrot 2009Science China Earth Sciences2009,52,6:7
3Statistical analysis of the ion density measured by the satellite DEMETER in relation with the seismic activity显示文摘This paper is related to study of the ion density recorded by the low altitude satellite DEMETER. It will present ionospheric perturbations observed during large seismic events.As the ionosphere is highly variable, the paper will show a statistical analysis performed on the plasma parameters during night time.An algorithm has been implemented to detect crests and troughs in the data before world-wide earthquakes.The earthquakes have been classified depending on their magnitude,depth,and location(land,below the sea,close to a coast). Due to the orbit,DEMETER returns above the same area every day(once during day time,once during night time) but not at the same distance of a given epicenter.Then,for each earthquake,data have been checked until 15 days before the shock when the distance between the trace of the orbit and the epicenter is less than 1 500 km.The results of the statistical analysis are presented as functions of various parameters.A comparison is done with two other databases where,on one hand,the location of the epicenters has been randomly modified, and on the other hand,the longitude of the epicenters has been shifted.Results show that the number and the intensity of the ionospheric perturbations are larger prior to earthquakes than prior to random events,and that the perturbations increase with the magnitude.Michel Parrot 2011Earthquake Science2011,24,6:4
4基于街道空间数据及GPS测量的SRTM-DEM校正和插值细化显示文摘针对城市地区SRTM数字高程模型,本文引入街道空间分布信息作为辅助数据,并结合GPS实地测量,对DEM中具有空间相关性的误差部分进行修正,从而尝试在一定程度上提高SRTM数据的垂直精度和空间分辨率。本文以墨西哥城Xico地区为例,解析SRTM DEM像元分辨率单元内地物表面平均高程值的组成结构;分析形成DEM高程值的地物组分之间的空间关系并根据GPS实地测量数据进行检验;探讨SRTM DEM中具有空间相关性系统偏差的产生原因;计算街道空间分布和SRTM数据中与其具有空间相关性的系统误差之间的定量关系;并评估SRTM数据在该区的总体高程偏差。根据辅助数据与DEM系统误差之间的空间关系,通过GIS空间运算实现SRTM DEM的校正和细化。结果表明,与原始SRTM数据相比,校正细化后的DEM其整体高程偏差,以及与街道建筑结构相关的系统误差,均能够得到一定程度的校正和改进,并能较好地反映城区实际地面高程和城区建筑结构信息。在其他地形数据缺乏情况下,尽管计算结果受SRTM自身数据精度所限,但利用含有空间定位信息的辅助数据,对现有较低空间分辨率的DEM进行误差校正及细化,仍可在一定程度上消减与辅助数据相关的空间误差,提高DEM数据精度,从而为相关研究提供更精确的基础地形资料。肖飞 Parrot J.F. 杜耘 凌峰 2011地球信息科学学报2011,13,1:2
5Inverted question mark ho--mocys- teinemia : role in vascular disease 显示文摘Conri C Constans J Parrot F 2000Presse Med2000,29,:1
6Accumalation of uranium by Saccgarimyces cererisiae and Pseudomonas aeruginosa 显示文摘Strandberg D W Shumate S E Parrot J R Jr 1981Appl Environ Microbiol1981,41,:1
7Microbal cells as biosorbents for heavy metals,accumulationof uranium by S cerevisiate and P aeruginosa显示文摘Strandberg G W Shumate S E Parrot J R 1981Appl Environ Microbial1981,,41:1
8The micro-satellite Demeter显示文摘Parrot M 0,,4:1
9DEM generation by contour line dilation 显示文摘Taud H Parrot J F Alvarez R 1999Computers & Geosciences1999,25,:1
10Analysis of TEC measurements above active seismic regions显示文摘Y Zaslavski M Parrot E Blanc 1998Physics of the Earth and Planetary Interiors1998,,3:1
11Variation of ionospheric electron density during the Bhuj seismic event 显示文摘Trigunait A Parrot M Pulinets S A 2004Annales Geophysicae2004,22,:1
12Severe haemoptysis in patients with nonsmall cell lung carcinoma 显示文摘Razazi K Parrot A Khalil A 2015Eur Respir J2015,45,3:1
13Approach to diagnosis and pathological examination in bronchial Dieulafoy disease : A case series 显示文摘Parrot A Antoine M Khalil A 2008Respir Res2008,9,1:1
14High-frequency seismo-electromagnetic effects显示文摘PARROT M ACHACHE J BERTHELIER J J 1993PEPI1993,77,:1
15Phenomena of electrostatic perturbations before strong earthquakes (2005-2010) observed on DEMETER显示文摘Zhang X Shen X Parrot M Zeren Z Ouyang X Liu J Qian J Zhao S and Miao Y 2012Nat Hazards Earth Syst Sci2012,12,1:1
16Time dependence and freezing-in of the electrode oxygen plasma-in- duced work function enhancement in polymer semiconductor hetero-structures 显示文摘BROWN T M LAZZERINI G M PARROT L J 2011Electron2011,12,4:1
17Examples of unusual ionospheric observations made by the DEMETER satellite over seismic regions显示文摘Parrot M Berthelier J J Lebreton J P 2006Physics and Chemistry of the Earth Parts A/B/C2006,31,49:1
18Novel food-grade plasmid vector based on melibiose fermentation for the genetic engineering lactococcus lactis显示文摘Boucher I Parrot M Gaudreau H 2002Appl Environ Microbiol2002,68,:1
19Novel food-grade plasmid vector based on melibiose fermentation for the genetic engineer- ing of Lactococcus lactis显示文摘BOUCHER I PARROT M GAUDREAU H 2002A Applied and Environmental Microbiology2002,68,12:1
20Variation of ionospheric electron density during the Bhuj seismic event 显示文摘Trigunait A Parrot M Pulinets S A 2004Annales Geophysicae2004,22,:1
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