Pub Date : 2019-08-17DOI: 10.31857/S0205-96142019418-28
D. M. Zhuravskiy, Д. М. Журавский, U. Prokhorova, У В Прохорова, B. Ivanov, Б.В. Иванов, A. S. Yanjura, А С Янжура, N. Kuprikov, Н. М. Куприков, M. V. Kurapov, М В Курапов
The article discusses the results of applying in Antarctica an original technique for estimating albedo from photogrammetric data and exposure parameters by an unmanned aerial vehicle (UAV). The complexities of the photogrammetric observations under extreme conditions are considered. Conclusions are drawn on ways to improve the recording equipment and the direction of improving the technique for calculating albedo values based on photogrammetric materials and metadata.
{"title":"Field tests of photogrammetric evaluation technique of snow-glacial surface albedo","authors":"D. M. Zhuravskiy, Д. М. Журавский, U. Prokhorova, У В Прохорова, B. Ivanov, Б.В. Иванов, A. S. Yanjura, А С Янжура, N. Kuprikov, Н. М. Куприков, M. V. Kurapov, М В Курапов","doi":"10.31857/S0205-96142019418-28","DOIUrl":"https://doi.org/10.31857/S0205-96142019418-28","url":null,"abstract":"The article discusses the results of applying in Antarctica an original technique for estimating albedo from photogrammetric data and exposure parameters by an unmanned aerial vehicle (UAV). The complexities of the photogrammetric observations under extreme conditions are considered. Conclusions are drawn on ways to improve the recording equipment and the direction of improving the technique for calculating albedo values based on photogrammetric materials and metadata.","PeriodicalId":388889,"journal":{"name":"Исследования Земли из космоса","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130102361","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-08-17DOI: 10.31857/s0205-96142019487-93
Board of the journal Issledovanie zemli iz kosmosa
On the 50th Anniversary of the Flight of the Satellite «Intercosmos-1»
纪念“宇宙一号”卫星飞行50周年
{"title":"On the 50th Anniversary of the Flight of the Satellite «Intercosmos-1»","authors":"Board of the journal Issledovanie zemli iz kosmosa","doi":"10.31857/s0205-96142019487-93","DOIUrl":"https://doi.org/10.31857/s0205-96142019487-93","url":null,"abstract":"On the 50th Anniversary of the Flight of the Satellite «Intercosmos-1»","PeriodicalId":388889,"journal":{"name":"Исследования Земли из космоса","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128293414","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-08-17DOI: 10.31857/S0205-9614201943-17
V. Bondur, В Г Бондур, T. Chimitdorzhiev, Тумэн Намжилович Чимитдоржиев, A. Dmitriev, Алексей Дмитриев, P. Dagurov, П. Н. Дагуров, A. Zakharov, А И Захаров, L. Zakharova, Л Н Захарова
The possibilities of radar polarimetry methods for identification of landslide zones are analyzed here. The fact of transformation of the dominant scattering type by the reflecting surface was used as a key feature of the landslide zone. ALOS-2 PALSAR-2 polarimetric data were processed using the Freeman–Durden and Cloude–Pottier decompositions for the four test sites selected in the area of a landslide caused by the Bureya river bank collapse. The decomposition results are consistent with each other in general, however, some areas show significant differences due to the specifics of the basic model provisions. It is shown that before the landslide event on the landslide area there were three main mechanisms of radar signal scattering: surface, volume, and double scattering. After the collapse, this area is characterized by a single scattering from the surface with large-scale irregularities and without vegetation. So, the landslide area can be confidently recognized. The considerable potential of using the radar polarimetry method for remote diagnostics of the effects of landslide phenomena has been demonstrated.
{"title":"Using radar polarimetry to monitor changes in backscattering mechanisms in landslide zones for the case study of the Bureya river bank collapse","authors":"V. Bondur, В Г Бондур, T. Chimitdorzhiev, Тумэн Намжилович Чимитдоржиев, A. Dmitriev, Алексей Дмитриев, P. Dagurov, П. Н. Дагуров, A. Zakharov, А И Захаров, L. Zakharova, Л Н Захарова","doi":"10.31857/S0205-9614201943-17","DOIUrl":"https://doi.org/10.31857/S0205-9614201943-17","url":null,"abstract":"The possibilities of radar polarimetry methods for identification of landslide zones are analyzed here. The fact of transformation of the dominant scattering type by the reflecting surface was used as a key feature of the landslide zone. ALOS-2 PALSAR-2 polarimetric data were processed using the Freeman–Durden and Cloude–Pottier decompositions for the four test sites selected in the area of a landslide caused by the Bureya river bank collapse. The decomposition results are consistent with each other in general, however, some areas show significant differences due to the specifics of the basic model provisions. It is shown that before the landslide event on the landslide area there were three main mechanisms of radar signal scattering: surface, volume, and double scattering. After the collapse, this area is characterized by a single scattering from the surface with large-scale irregularities and without vegetation. So, the landslide area can be confidently recognized. The considerable potential of using the radar polarimetry method for remote diagnostics of the effects of landslide phenomena has been demonstrated.","PeriodicalId":388889,"journal":{"name":"Исследования Земли из космоса","volume":"273 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132238478","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-08-17DOI: 10.31857/S0205-96142019440-47
A. Andreev, А.Г. Андреев
The surface water circulation in the Bering Sea for the period from 2002 to 2017 has been investigated using satellite data. In January, the main stream of surface waters was directed to the south-west along the continental slope, and anticyclonic water circulation was observed on the shelf. In July, the surface water flow was oriented to the northeast along the continental slope, and on the shelf the cyclonic movement of water prevailed. The formation of mesoscale anticyclones in the winter period was caused by the supply of shelf waters with low temperature and salinity. The temporal variability of the currents during the summer is associated with coastal upwelling caused by the winds of the southern points over the western part of the Bering Sea. The presence of upwelling and anticyclonic eddies should be considered as one of the factors leading to the formation of a region with a high concentration of chlorophyll near the coast in the summer season.
{"title":"Water circulation in the north-western Bering sea studied by satellite data","authors":"A. Andreev, А.Г. Андреев","doi":"10.31857/S0205-96142019440-47","DOIUrl":"https://doi.org/10.31857/S0205-96142019440-47","url":null,"abstract":"The surface water circulation in the Bering Sea for the period from 2002 to 2017 has been investigated using satellite data. In January, the main stream of surface waters was directed to the south-west along the continental slope, and anticyclonic water circulation was observed on the shelf. In July, the surface water flow was oriented to the northeast along the continental slope, and on the shelf the cyclonic movement of water prevailed. The formation of mesoscale anticyclones in the winter period was caused by the supply of shelf waters with low temperature and salinity. The temporal variability of the currents during the summer is associated with coastal upwelling caused by the winds of the southern points over the western part of the Bering Sea. The presence of upwelling and anticyclonic eddies should be considered as one of the factors leading to the formation of a region with a high concentration of chlorophyll near the coast in the summer season.","PeriodicalId":388889,"journal":{"name":"Исследования Земли из космоса","volume":"197 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132896977","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-06-20DOI: 10.31857/S0205-961420193104-112
G. S. Bordonskiy, Г С Бордонский, A. Orlov, А.О. Орлов
An improved formula for the supercooled water loss factor at frequencies 10…180 GHz in the temperature range 0 ... –70 °C is presented. The formula based on the experimental data obtained by the authors on measurements of attenuation in the pore water of silicate materials. The formula contains two terms connected the Debye dependence of the loss factor on frequency and temperature, and non-Debye, determined by the influence of the second critical point of water. Comparison of the proposed formula and the model formulas of other authors is carried out. A significant discrepancy between the calculation results (at several times) of the loss factor at frequencies above 100 GHz and temperatures below –30 °C has been founded. The model based on the measurements provides the most adequate representation of the behavior of the loss factor with an error of ~ 30% in the area of deep supercooling of water and in the upper part of the studied frequency band.
{"title":"Comparison of various models of supercooled water loss factor with experimental data at microwaves","authors":"G. S. Bordonskiy, Г С Бордонский, A. Orlov, А.О. Орлов","doi":"10.31857/S0205-961420193104-112","DOIUrl":"https://doi.org/10.31857/S0205-961420193104-112","url":null,"abstract":"An improved formula for the supercooled water loss factor at frequencies 10…180 GHz in the temperature range 0 ... –70 °C is presented. The formula based on the experimental data obtained by the authors on measurements of attenuation in the pore water of silicate materials. The formula contains two terms connected the Debye dependence of the loss factor on frequency and temperature, and non-Debye, determined by the influence of the second critical point of water. Comparison of the proposed formula and the model formulas of other authors is carried out. A significant discrepancy between the calculation results (at several times) of the loss factor at frequencies above 100 GHz and temperatures below –30 °C has been founded. The model based on the measurements provides the most adequate representation of the behavior of the loss factor with an error of ~ 30% in the area of deep supercooling of water and in the upper part of the studied frequency band.","PeriodicalId":388889,"journal":{"name":"Исследования Земли из космоса","volume":"73 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116063773","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-06-20DOI: 10.31857/S0205-96142019366-79
J. Ivanova, Ю. Н. Иванова, R. I. Vyhristenko, Р. И. Выхристенко, I. Vikentyev, И. В. Викентьев
Large ring, arc and radial structures were identified based on complex processing of the multispectral satellite imagery of the Landsat apparatus. These structures control the position of gold mineralization of the Toupugol-Khanmeyshorsky ore district (Novogodnenskoe ore cluster, the Polar Urals). The comparative characteristic of this territory with the Turinsk-Auerbakh ore district (Auerbach ore cluster, the Northern Urals) was held. Similar geological features, regularity of the structures and location of gold mineralization in the system of morphostructures were revealed. For the first time, the depths of the formation of magmatic chambers were determined for the Novogodnensky and Auerbach paleovolcanic structures. These chambers were located at depths of ~4 km and ~20 km, respectively in the upper and middle parts of the earth's crust. These are sitting. The Novogodnensky structure is a monogenic structure. It formed under the influence of one leading geological process. The Auerbach structure is larger and more complex structure; it is characterized by a long and multi-stage development. The paleovolcanic reconstruction showed that the root (focal) part of the Auerbach structure plunges from the southeast to the northwest during of the magmatic process evolution. Gold mineralization within the studied areas of the Northern Urals is confined to the intersections of radial faults near the centers of large concentric morphostructures.
{"title":"Geological position and structural control of ore mineralization of the Toupugol-Khanmeyshorsky district (the Polar Urals) as a result of remote sensing","authors":"J. Ivanova, Ю. Н. Иванова, R. I. Vyhristenko, Р. И. Выхристенко, I. Vikentyev, И. В. Викентьев","doi":"10.31857/S0205-96142019366-79","DOIUrl":"https://doi.org/10.31857/S0205-96142019366-79","url":null,"abstract":"Large ring, arc and radial structures were identified based on complex processing of the multispectral satellite imagery of the Landsat apparatus. These structures control the position of gold mineralization of the Toupugol-Khanmeyshorsky ore district (Novogodnenskoe ore cluster, the Polar Urals). The comparative characteristic of this territory with the Turinsk-Auerbakh ore district (Auerbach ore cluster, the Northern Urals) was held. Similar geological features, regularity of the structures and location of gold mineralization in the system of morphostructures were revealed. For the first time, the depths of the formation of magmatic chambers were determined for the Novogodnensky and Auerbach paleovolcanic structures. These chambers were located at depths of ~4 km and ~20 km, respectively in the upper and middle parts of the earth's crust. These are sitting. The Novogodnensky structure is a monogenic structure. It formed under the influence of one leading geological process. The Auerbach structure is larger and more complex structure; it is characterized by a long and multi-stage development. The paleovolcanic reconstruction showed that the root (focal) part of the Auerbach structure plunges from the southeast to the northwest during of the magmatic process evolution. Gold mineralization within the studied areas of the Northern Urals is confined to the intersections of radial faults near the centers of large concentric morphostructures.","PeriodicalId":388889,"journal":{"name":"Исследования Земли из космоса","volume":"1995 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130415815","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-06-20DOI: 10.31857/S0205-96142019345-54
D. N. Kuprikov, Д Н Куприков, I. Vikentyev, И В Викентьев
New data about the ore-controlling structures of the Lebedinsky ore-pleaser cluster have been obtained on the basis of space decoding. A stadial analysis of the territory from the ore cluster scale to the ore body (the Myatezhnaya zone) was carried out, as a result of which the position of this zone was clarified. The major ore-hosting structures were identified by space images decoding, and the local structures were revealed by detailed study, and these latter were certified in the course of geological routes with sampling identified for detailed study. Based on the positive results of testing and identification of the mineralization accompanying metasomatic zones were laid mine workings – a trench and several drill holes. As a result of the mining operations, the presence of the ore zone was confirmed; the forecast gold resources for the categories P1 and P2 were tested.
{"title":"Application of the data of space decoding for the study of ore-controlling structures of the Lebedinsky ore-placer cluster, South Yakutia","authors":"D. N. Kuprikov, Д Н Куприков, I. Vikentyev, И В Викентьев","doi":"10.31857/S0205-96142019345-54","DOIUrl":"https://doi.org/10.31857/S0205-96142019345-54","url":null,"abstract":"New data about the ore-controlling structures of the Lebedinsky ore-pleaser cluster have been obtained on the basis of space decoding. A stadial analysis of the territory from the ore cluster scale to the ore body (the Myatezhnaya zone) was carried out, as a result of which the position of this zone was clarified. The major ore-hosting structures were identified by space images decoding, and the local structures were revealed by detailed study, and these latter were certified in the course of geological routes with sampling identified for detailed study. Based on the positive results of testing and identification of the mineralization accompanying metasomatic zones were laid mine workings – a trench and several drill holes. As a result of the mining operations, the presence of the ore zone was confirmed; the forecast gold resources for the categories P1 and P2 were tested.","PeriodicalId":388889,"journal":{"name":"Исследования Земли из космоса","volume":"136 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128236938","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-06-20DOI: 10.31857/s0205-96142019333-44
A. Polonsky, A. Serebrennikov
Based on daily ocean surface temperature values for 1982–2017, near-surface wind for 1988–2017. and sea level anomalies for 1993–2017, obtained from satellite data, the seasonal variability of the hydrodynamic characteristics of the upper water layer in the vicinity of the Benguela upwelling is investigated. It is shown that the thermal upwelling index averaged over the entire area with lower temperature values does not give a correct idea on the seasonal course of the water lifting rate in the upwelling zone due to the significant horizontal advection of waters of upwelling origin. The seasonal variations of the vertical velocity of wind origin in the Benguela upwelling zone are characterized by the presence of two extremes from October to March, which is manifested in the predominance of the semiannual harmonic. At the same time, the thermal upwelling index in the zone of distribution of upwelling waters is subject to seasonal variability with an annual period.
{"title":"On the changes in the sea surface temperature in the Benguela upwelling region. Part 1: season cycle","authors":"A. Polonsky, A. Serebrennikov","doi":"10.31857/s0205-96142019333-44","DOIUrl":"https://doi.org/10.31857/s0205-96142019333-44","url":null,"abstract":"Based on daily ocean surface temperature values for 1982–2017, near-surface wind for 1988–2017. and sea level anomalies for 1993–2017, obtained from satellite data, the seasonal variability of the hydrodynamic characteristics of the upper water layer in the vicinity of the Benguela upwelling is investigated. It is shown that the thermal upwelling index averaged over the entire area with lower temperature values does not give a correct idea on the seasonal course of the water lifting rate in the upwelling zone due to the significant horizontal advection of waters of upwelling origin. The seasonal variations of the vertical velocity of wind origin in the Benguela upwelling zone are characterized by the presence of two extremes from October to March, which is manifested in the predominance of the semiannual harmonic. At the same time, the thermal upwelling index in the zone of distribution of upwelling waters is subject to seasonal variability with an annual period.","PeriodicalId":388889,"journal":{"name":"Исследования Земли из космоса","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130152065","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-06-20DOI: 10.31857/S0205-96142019380-91
N. Platonov, Н. Г. Платонов, I. Mizin, И А Мизин, E. Ivanov, Е. А. Иванов, I. N. Mordvintsev, И. Н. Мордвинцев, S. Naydenko, С. В. Найденко, V. Rozhnov, В. В. Рожнов
A polar bear female (Ursus maritimus) was captured and marked by satellite collar of the Argos system on Vaygach Island. Data of location relative to the coastline in the Kara Gate from April 2016 to September 2017 was analyzed. An analysis of the polar bear trajectory revealed periods of its greater (when on ice) and less (on land) mobility and directed of movement. The largest area of the polar bear habitat on an average monthly scale was in May 2016, when moving on small-hit ice, the smallest – in January 2017, when on land with no ice. We estimated the distance to the coast to analysis for resource use (27% of the time on the coast, 33% on land, 40% in the water area). Comparison with our previous studies has shown, there is a commitment to land, even during the season of sea ice presence.
{"title":"Use by polar bear (ursus maritimus) of the habitat along coastline throughout the year according to satellite monitoring data","authors":"N. Platonov, Н. Г. Платонов, I. Mizin, И А Мизин, E. Ivanov, Е. А. Иванов, I. N. Mordvintsev, И. Н. Мордвинцев, S. Naydenko, С. В. Найденко, V. Rozhnov, В. В. Рожнов","doi":"10.31857/S0205-96142019380-91","DOIUrl":"https://doi.org/10.31857/S0205-96142019380-91","url":null,"abstract":"A polar bear female (Ursus maritimus) was captured and marked by satellite collar of the Argos system on Vaygach Island. Data of location relative to the coastline in the Kara Gate from April 2016 to September 2017 was analyzed. An analysis of the polar bear trajectory revealed periods of its greater (when on ice) and less (on land) mobility and directed of movement. The largest area of the polar bear habitat on an average monthly scale was in May 2016, when moving on small-hit ice, the smallest – in January 2017, when on land with no ice. We estimated the distance to the coast to analysis for resource use (27% of the time on the coast, 33% on land, 40% in the water area). Comparison with our previous studies has shown, there is a commitment to land, even during the season of sea ice presence.","PeriodicalId":388889,"journal":{"name":"Исследования Земли из космоса","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131884956","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-06-20DOI: 10.31857/S0205-96142019392-103
V. Bondur, В Г Бондур, T. Chimitdorzhiev, Тумэн Намжилович Чимитдоржиев, A. Dmitriev, Алексей Дмитриев, P. Dagurov, П Н Дагуров
The results of studies to assess the texture of L- and C-band radar polarimetric images obtained from SIR-C and ALOS PALSAR-1 satellites for the analysis of forest vegetation characteristics using different signatures are summarized. A fractal polarization signature is proposed for the study, which allows to estimate the spatial anisotropy of forest vegetation inhomogeneities at different azimuthal angles of radar sensing. In addition, the signature of lacunarity is suggested as a tool for qualitative evaluation of the angular distribution of tree branches. The heterogeneities of forest vegetation at the test site near the Baikal Lake have been estimated based on the results of the analysis of fractal dimension and lacunarity at different states of the polarization ellipse.
{"title":"Spatial anisotropy assessment of the forest vegetation heterogeneity at various azimuth angles of the radar polarimetric sensing","authors":"V. Bondur, В Г Бондур, T. Chimitdorzhiev, Тумэн Намжилович Чимитдоржиев, A. Dmitriev, Алексей Дмитриев, P. Dagurov, П Н Дагуров","doi":"10.31857/S0205-96142019392-103","DOIUrl":"https://doi.org/10.31857/S0205-96142019392-103","url":null,"abstract":"The results of studies to assess the texture of L- and C-band radar polarimetric images obtained from SIR-C and ALOS PALSAR-1 satellites for the analysis of forest vegetation characteristics using different signatures are summarized. A fractal polarization signature is proposed for the study, which allows to estimate the spatial anisotropy of forest vegetation inhomogeneities at different azimuthal angles of radar sensing. In addition, the signature of lacunarity is suggested as a tool for qualitative evaluation of the angular distribution of tree branches. The heterogeneities of forest vegetation at the test site near the Baikal Lake have been estimated based on the results of the analysis of fractal dimension and lacunarity at different states of the polarization ellipse.","PeriodicalId":388889,"journal":{"name":"Исследования Земли из космоса","volume":"271 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134036152","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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