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15篇 您的检索式:作者名="KAFATOS Menas"
    题名 作者 年代 出处 被引量
1Atmosphere-ionosphere response to the M9 Tohoku earthquake revealed by multiinstrument space-borne and ground observations:Preliminary results显示文摘We retrospectively analyzed the temporal and spatial variations of four different physical parameters characterizing the state of the atmosphere and ionosphere several days before the M9 Tohoku,Japan earthquake of March 11,2011.The data include outgoing long wave radiation(OLR),GPS/TEC,lower Earth orbit ionospheric tomography and critical frequency foF2.Our first results show that on March 7th a rapid increase of emitted infrared radiation was observed from the satellite data and an anomaly developed near the epicenter.The GPS/TEC data indicate an increase and variation in electron density reaching a maximum value on March 8.Starting from this day in the lower ionosphere also there was confirmed an abnormal TEC variation over the epicenter.From March 3 to 11 a large increase in electron concentration was recorded at all four Japanese ground-based ionosondes,which returned to normal after the main earthquake.The joint preliminary analysis of atmospheric and ionospheric parameters during the M9 Tohoku,Japan earthquake has revealed the presence of related variations of these parameters implying their connection with the earthquake process.This study may lead to a better understanding of the response of the atmosphere/ionosphere to the great Tohoku earthquake.Dimitar Ouzounov Sergey Pulinets Alexey Romanov Alexander Romanov Konstantin Tsybulya Dmitri Davidenko Menas Kafatos Patrick Taylor 2011Earthquake Science2011,24,6:7
2Estimation of effective plant area index for South Korean forests using LiDAR system显示文摘Light Detection and Ranging(LiDAR) systems can be used to estimate both vertical and horizontal forest structure.Woody components,the leaves of trees and the understory can be described with high precision,using geo-registered 3D-points.Based on this concept,the Effective Plant Area Indices(PAIe) for areas of Korean Pine(Pinus koraiensis),Japanese Larch(Larix leptolepis) and Oak(Quercus spp.) were estimated by calculating the ratio of intercepted and incident LIDAR laser rays for the canopies of the three forest types.Initially,the canopy gap fraction(GLiDAR) was generated by extracting the LiDAR data reflected from the canopy surface,or inner canopy area,using k-means statistics.The LiDAR-derived PAIe was then estimated by using GLIDAR with the Beer-Lambert law.A comparison of the LiDAR-derived and field-derived PAIe revealed the coefficients of determination for Korean Pine,Japanese Larch and Oak to be 0.82,0.64 and 0.59,respectively.These differences between field-based and LIDAR-based PAIe for the different forest types were attributed to the amount of leaves and branches in the forest stands.The absence of leaves,in the case of both Larch and Oak,meant that the LiDAR pulses were only reflected from branches.The probability that the LiDAR pulses are reflected from bare branches is low as compared to the reflection from branches with a high leaf density.This is because the size of the branch is smaller than the resolution across and along the 1 meter LIDAR laser track.Therefore,a better predictive accuracy would be expected for the model if the study would be repeated in late spring when the shoots and leaves of the deciduous trees begin to appear.KWAK Doo-Ahn LEE Woo-Kyun KAFATOS Menas SON Yowhan CHO Hyun-Kook LEE Seung-Ho 2010Science China(Life Sciences)2010,53,7:7
3Interannual variability of vegetation over the Indian sub-continent and its relation to the different meteorological parameters显示文摘Sudipta Sarkar Menas Kafatos 2004Remote Sensing of Environment2004,,2:2
4Interannual Variability of Vegetation Over the Indian Sub-continent and Its Relation to the Different Meteorological Parameters显示文摘Sudipta S Menas Kafatos 2004Remote Sensing of Environment2004,90,:1
5Hyperspectral image assessment ofoil -contaminated wetland显示文摘Foudan Salem Menas Kafatos Tarek EL - Ghasawi 2005International Journal of Remote Sensing2005,26,4:1
6利用激光雷达数据估算韩国森林有效植被面积指数显示文摘雷达系统能够同时探测森林的水平结构和垂直结构,结合地面控制点还可以高精度地描绘森林中的树干、树冠及林下植被.基于此理念,通过计算雷达激光束被拦截的比例估算红松(Pinus koraiensis)、日本落叶松(Larix leptolepis)和栎类(Quercus sp.)的有效植被面积指数(PAIe).从冠层表面或冠层内部反射的雷达数据中利用k-均值聚类方法提取林隙分数(GLIDAR),根据比尔-朗伯吸收定律和GLIDAR计算PAIe.结果显示,利用雷达数据推算的红松、日本落叶松和栎类的PAIe与实际测量的PAIe之间的相关系数分别为0.82,0.64和0.59.不同树种之间雷达测量值与实测值之间相关性的差异,主要来自于叶片与枝条数量的不同.如果没有树叶,激光雷达的脉冲只能由枝条反射,然而枝条的大小往往小于激光雷达的分辨率(1m),所以与长满树叶的枝条相比,光秃的枝条反射雷达脉冲的几率非常小.因此,若在春季末期树叶出现后进行此类研究,估算的准确度将有所提高.KWAK Doo-Ahn LEE Woo-Kyun KAFATOS Menas CHO Hyun-Kook 2010中国科学:生命科学2010,40,7:1
7Biological Autonomy显示文摘Attila Grandpierre Menas Kafatos 2012Journal of Philosophy Study2012,2,9:1
8Performance-improving techniques in web-based GIS显示文摘Chaowei Yang David W. Wong Ruixin Yang Menas Kafatos Qi Li 2005International Journal of Geographical Information Science2005,,3:1
9Future Intelligent Earth Obsevring Satellites显示文摘Guoqing Zhou and Menas Kafatos 2002Pecora2002,15,:1
10Performance-improving techniques in web-based GIS显示文摘Chaowei Yang David W. Wong Ruixin Yang Menas Kafatos Qi Li 2005International Journal of Geographical Information Science2005,,3:1
11Wavelet-based Hyper spectral and Muhispectral Image Fusion显示文摘Richard B Gomez Amin Jazaeri Menas Kafatos 2001Proceedings of SP IE2001,4383,:1
12Future Intelligent Earth Observing Satellites 显示文摘Guoqing Zhou and Menas Kafatos 2002Pecora2002,15,:1
13Comparison of spatial interpolation techniques for predicting climate factors in Korea显示文摘Su‐Na Kim Woo‐Kyun Lee Key‐Il Shin Menas Kafatos DongJo Seo Han‐Bin Kwak 2010Forest Science and Technology2010,,2:1
14Inter annal variability of vegetation over the Indian sub - continent and its relation to the different meteorological parameters显示文摘Sudipta Sarkar Menas Kafatos 2004Remote Sensing of Environment2004,90,2:1
15From Quanta to Qualia: How a Paradigm Shift Turns Into Science显示文摘Deepak Chopra Menas C. Kafatos 2014Journal of Philosophy Study2014,4,4:0
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