Descripteur
Termes IGN > sciences naturelles > sciences de la Terre et de l'univers > géosciences > géographie physique > hydrographie > hydrogéologie > eau souterraine > humidité du sol
humidité du sol |
Documents disponibles dans cette catégorie (177)
Ajouter le résultat dans votre panier
Visionner les documents numériques
Affiner la recherche Interroger des sources externes
Etendre la recherche sur niveau(x) vers le bas
A phase signature for detecting wet subsurface structures using polarimetric L-band SAR / Y. Lasne in IEEE Transactions on geoscience and remote sensing, vol 42 n° 8 (August 2004)
[article]
Titre : A phase signature for detecting wet subsurface structures using polarimetric L-band SAR Type de document : Article/Communication Auteurs : Y. Lasne, Auteur ; P. Paillou, Auteur ; et al., Auteur Année de publication : 2004 Article en page(s) : pp 1683 - 1694 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Acquisition d'image(s) et de donnée(s)
[Termes IGN] bande L
[Termes IGN] dune
[Termes IGN] eau souterraine
[Termes IGN] équation intégrale
[Termes IGN] humidité du sol
[Termes IGN] image AIRSAR
[Termes IGN] paléosol
[Termes IGN] phase
[Termes IGN] sable
[Termes IGN] simulation numérique
[Termes IGN] traitement du signal
[Termes IGN] zone arideRésumé : (Auteur) In this paper, we investigate the ability of L-band synthetic aperture radar (SAR) systems to penetrate soils to retrieve information about subsurface wet structures. Our experiment site, the Pyla dune, is a bare sandy area allowing high radar penetration and known to have large wet subsurface structures (paleosoils) at varying depths. Buried paleosoils, which act as moisture tanks, are detectable with radar, since they present a high permittivity due to their water content. By analyzing airborne polarimetric SAR data, we established that a phase signature is correlated to the buried wet palesoils: a phase difference of 23° between the horizontal (HH) and vertical (V V) channels was clearly observed. It allows detection of the paleosoil down to a larger depth (5.2 m) than when only considering HH and HV amplitude signals (3.5 m). In order to confirm this result, field measurements were performed that led to the same observed phase difference. We could fit our observations to the semiempirical model proposed by Oh and Sarabandi, and we reproduced the observed phenomenon using a two-layer integral equation method (IEM) model of the Pyla dune, which was completed by finite-difference time-domain (FDTD) numerical simulations. We show that the soil moisture significantly influences the radar response in terms of phase difference between the copolarised modes. Our study also shows that the single-scattering IEM model reproduces the observed phase difference fairly well for a natural outdoor site when combined to FDTD simulation results. This phase signature could be used as a new tool to map subsurface moisture in arid regions. Numéro de notice : A2004-428 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1109/TGRS.2004.830645 En ligne : https://doi.org/10.1109/TGRS.2004.830645 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=26955
in IEEE Transactions on geoscience and remote sensing > vol 42 n° 8 (August 2004) . - pp 1683 - 1694[article]Réservation
Réserver ce documentExemplaires(1)
Code-barres Cote Support Localisation Section Disponibilité 065-04081 RAB Revue Centre de documentation En réserve L003 Disponible Assessing the potential of space-borne C-band SAR data for spatial soil moisture information over a large area / S.A. Romshoo in Geocarto international, vol 19 n° 1 (March - May 2004)
[article]
Titre : Assessing the potential of space-borne C-band SAR data for spatial soil moisture information over a large area Type de document : Article/Communication Auteurs : S.A. Romshoo, Auteur ; K. Musiake, Auteur Année de publication : 2004 Article en page(s) : pp 65 - 75 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Acquisition d'image(s) et de donnée(s)
[Termes IGN] analyse en composantes principales
[Termes IGN] humidité du sol
[Termes IGN] image ERS-SAR
[Termes IGN] image Radarsat
[Termes IGN] modèle de diffusion du rayonnement
[Termes IGN] rétrodiffusion
[Termes IGN] zone humideRésumé : (Auteur) The backscattering coefficient ä from a time series of ERS-2 SAR data showed high correlation (r 2 =0.94) and high sensitivity to the observed surface soil moisture at a field scale. The observations agreed well with the simulations from the two surface scattering models tested in the study area. A single coincidence of the ERS-2 and RADARSAT missions, with two different polarizations, provided an opportunity to estimate soil moisture over a large area by inverting the Dubois model. The estimates were validated with the field observations over a small area and are in good agreement with standard error of estimate (SEE) equal to 1.01 cm3 cm-3. Furthermore, different soil moisture estimation methods were tested and compared with the observations to better understand the temporal and spatial variability of this important parameter. Soil moisture at a point was simulated using three hydrological models and compared with the radar backscattering and the point observations. There is a large variation in the responses among them. Simple statistical approaches viz., coefficient of variation and principal component analysis were used for mapping the spatial patterns of soil moisture over a large area using a time series of ERS-2 data. These simple methods helped to map areas where the moisture availability is not varying much. This information about soil moisture distribution is of vital importance to the hydrological processes especially the variable source area concept. Numéro de notice : A2004-233 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1080/10106040408542300 Date de publication en ligne : 02/01/2008 En ligne : https://doi.org/10.1080/10106040408542300 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=26760
in Geocarto international > vol 19 n° 1 (March - May 2004) . - pp 65 - 75[article]Réservation
Réserver ce documentExemplaires(1)
Code-barres Cote Support Localisation Section Disponibilité 059-04011 RAB Revue Centre de documentation En réserve L003 Disponible Effectiveness of spectroscopy in identification of swelling indicator clay minerals / P.C. Kariuki in International Journal of Remote Sensing IJRS, vol 25 n° 2 (January 2004)
[article]
Titre : Effectiveness of spectroscopy in identification of swelling indicator clay minerals Type de document : Article/Communication Auteurs : P.C. Kariuki, Auteur ; T. Woldai, Auteur ; Freek Van Der Meer, Auteur Année de publication : 2004 Article en page(s) : pp 455 - 469 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Photo-interprétation
[Termes IGN] Argile
[Termes IGN] Espagne
[Termes IGN] humidité du sol
[Termes IGN] risque naturelRésumé : (Auteur) Swelling soils are a major geological hazard worldwide and their identification is a major concern. Swelling is due to the presence of clay minerals with a potential to accommodate water within their crystal structure. Three common groups, namely smectite, illite and kaolinite, have been identified as indicators of high, moderate and low swelling potential soils where in abundance. This study assessed the potential of spectral data as a tool to recognize the presence of these minerals in soils of varying swelling potential collected from the Antequera area of southern Spain, with the aim of establishing spectral parameters that would in future be applied in remote sensing applications for mapping swelling soils. The coefficient of linear extensibility (COLE) and the linear extensibility (Lerod), which are established methods for assessing swelling potential and tentative clay mineral allocation, were used as the controlling methods to classify the soils into swelling potential groups and to assign them to dominant clay mineral types. Several spectral parameters were identified as giving a good basis for assigning the soils to domination by either of these clay minerals, and thus to a swelling potential class based on their diagnostic assignment to hydroxyl (OH) and molecular water vibrational processes in clay minerals. The parameters consisted of asymmetries (1400 nm and 2200 nm) that were strong in the presence of the more ordered kaolinite, wavelength position and depth at 1900 nm, in abundant smectites, first and second derivative peaks at or near the molecular water feature and the unique presence of absorptions at 2170 nm and 2340 nm in abundant kaolinite and illite. The results show the potential for using reflectance spectroscopy as a tool in the classification of soils into domination by these indicator minerals and thus into swelling potential classes. However, high organic matter and the presence of moisture were found to affect area and depth intensities and would require consideration in such applications. Numéro de notice : A2004-058 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1080/0143116031000084314 En ligne : https://doi.org/10.1080/0143116031000084314 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=26586
in International Journal of Remote Sensing IJRS > vol 25 n° 2 (January 2004) . - pp 455 - 469[article]Exemplaires(1)
Code-barres Cote Support Localisation Section Disponibilité 080-04021 RAB Revue Centre de documentation En réserve L003 Exclu du prêt Impacts of hydrologic soil properties on drought detection with MODIS thermal data / S. Park in Remote sensing of environment, vol 89 n° 1 (15/01/2004)
[article]
Titre : Impacts of hydrologic soil properties on drought detection with MODIS thermal data Type de document : Article/Communication Auteurs : S. Park, Auteur ; J.J. Feddema, Auteur Année de publication : 2004 Article en page(s) : pp 53 - 62 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications de télédétection
[Termes IGN] humidité du sol
[Termes IGN] image Terra-MODIS
[Termes IGN] image thermique
[Termes IGN] Kansas (Etats-Unis ; état)
[Termes IGN] Normalized Difference Vegetation Index
[Termes IGN] sécheresse
[Termes IGN] système d'information géographique
[Termes IGN] zone humideRésumé : (Auteur) Remote sensing data from the Moderate Resolution Imaging Spectroradiometer (MODIS), a climatic water budget model, and the STATSGO database were used within a GIS environment to determine the influences of hydrologic soil properties on soil moisture and thermal emission in western-central Kansas for a dry year, 2000. Two important variables, waterholding capacity (WHC) and hydrologic soil group (HSG), were controlled in our water budget experiment to evaluate their impacts on soil moisture content (SMC) changes throughout the period. Results showed that HSG affected drought detection and occurrence very little, but WHC variations explained most local variations of soil moisture content. As a strong indicator of relative soil moisture deficit, the Standardized Thermal Index (STI) patterns were also influenced by WHC. Generally, the earlier the soil moisture content drops below 40%, the earlier the STI reaches a threshold value of 0.2 or higher. Vegetation responses to thermal detection lagged behind the STI by up to 8 weeks, which was computed by comparing the STI and Normalized Difference Vegetation Index (NDVI) deviation from a 10-year mean. The spatial pattern of lagtimes was not apparent, but lagtimes were correlated with a WHC component. Numéro de notice : A2004-009 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1016/j.rse.2003.10.003 En ligne : https://doi.org/10.1016/j.rse.2003.10.003 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=26537
in Remote sensing of environment > vol 89 n° 1 (15/01/2004) . - pp 53 - 62[article]The EuroSTARRS airborne campaign in support of the SMOS mission: first results over land surfaces / K. Saleh in International Journal of Remote Sensing IJRS, vol 25 n° 1 (January 2004)
[article]
Titre : The EuroSTARRS airborne campaign in support of the SMOS mission: first results over land surfaces Type de document : Article/Communication Auteurs : K. Saleh, Auteur ; Jean-Pierre Wigneron, Auteur ; et al., Auteur Année de publication : 2004 Article en page(s) : pp 177 - 194 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications de télédétection
[Termes IGN] analyse comparative
[Termes IGN] analyse en composantes principales
[Termes IGN] bande L
[Termes IGN] flore locale
[Termes IGN] forêt
[Termes IGN] France (administrative)
[Termes IGN] humidité du sol
[Termes IGN] luminance lumineuse
[Termes IGN] masse végétale
[Termes IGN] Pinophyta
[Termes IGN] polarisation
[Termes IGN] réalité de terrain
[Termes IGN] Soil Moisture and Ocean Salinity Mission
[Termes IGN] température de luminance
[Termes IGN] température de surface
[Termes IGN] Valence (Espagne)
[Termes IGN] verger
[Termes IGN] viticultureRésumé : (Auteur) A number of experiments using ground-based and airborne sensors have shown the high potential of L-band passive microwave radiometry for estimating and monitoring surface soil moisture. This has led to the Soil Moisture and Ocean Salinity (SMOS) mission, a European Space Agency (ESA) Earth Explorer Opportunity mission. SMOS has the objective to observe soil moisture over land and sea surface salinity over sea, both key parameters for atmospheric, oceanographic and hydrological predictive models. In preparation of SMOS, the EuroSTARRS airborne campaign was carried out in November 2001. Multi-angular measurements of the surface brightness temperature at L-band (1.4GHz) at vertical polarization were acquired by the 'Salinity Temperature and Roughness Remote Scanner' (STARRS) radiometer from the Naval Research Laboratory (NRL, USA) over several sites in Southern France, the Pyrenees and Eastern Spain. The chosen sites represent specific land conditions and vegetation canopies where microwave surface emission models need further investigation, and include: dense forests, shrubs and scrubland, mixed areas of different vegetation covers and areas with variable topography. This paper gives an overview of the experiment, including a discussion of the objectives, description of the sites, details of the microwave measurements and some first results of the campaign. First, a principal component analysis of the forest brightness temperature measured at different configurations illustrates the sensitivity of brightness temperature to biomass conditions for coniferous trees. Then, the microwave signature of the vegetation covers considered in this study-coniferous forest at Les Landes (France), mixed deciduous/coniferous stands at the Agre forest (France), shrubland, vineyards and orchards at the Valencia site (Spain) - is illustrated, in particular as regards to the dependance of the L-band emissivity to biomass conditions. Numéro de notice : A2004-037 Affiliation des auteurs : non IGN Thématique : FORET/IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1080/0143116031000116444 En ligne : https://doi.org/10.1080/0143116031000116444 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=26565
in International Journal of Remote Sensing IJRS > vol 25 n° 1 (January 2004) . - pp 177 - 194[article]Exemplaires(1)
Code-barres Cote Support Localisation Section Disponibilité 080-04011 RAB Revue Centre de documentation En réserve L003 Exclu du prêt Vegetation canopy anisotropy at 1.4 GHz / B.K. Hornbuckle in IEEE Transactions on geoscience and remote sensing, vol 41 n° 10 (October 2003)PermalinkSurface soil moisture retrieval from L-band radiometry: a global regression study / T. Pellarin in IEEE Transactions on geoscience and remote sensing, vol 41 n° 9 (September 2003)PermalinkThe Advanced Microwave Scanning Radiometer for the Earth observing system (AMSR-E), NASDA's contribution to the EOS for global energy and water cycle / T. Kawanishi in IEEE Transactions on geoscience and remote sensing, vol 41 n° 2 (February 2003)PermalinkSimulating L-band emission of forests in view of future satellite applications / P. Ferrazzoli in IEEE Transactions on geoscience and remote sensing, vol 40 n° 12 (December 2002)PermalinkSoil moisture estimation from ERS-SAR data: toward an operational methodology / Sylvie Le Hégarat-Mascle in IEEE Transactions on geoscience and remote sensing, vol 40 n° 12 (December 2002)PermalinkUsing GIS in passive microwave soil moisture mapping and geostatistical analysis / A. Oldak in International journal of geographical information science IJGIS, vol 16 n° 7 (october 2002)PermalinkContribution au développement d'une base de données à référence spatiale pour l'aide à la décision dans la lutte contre la désertification / K. Talbi (2002)Permalinkvol 39 n° 8 - August 2001 - Special issue on large scale passive microwave remote sensing of soil moisture (Bulletin de IEEE Transactions on geoscience and remote sensing) / Geoscience and remote sensing societyPermalinkDetermination of grid size for digital terrain modelling in landscape investigations: exemplified by soil moisture distribution at a micro-scale / Igor V. Florinsky in International journal of geographical information science IJGIS, vol 14 n° 8 (december 2000)PermalinkSecond International workshop on retrieval of bio & geo-physical parameters from SAR data for land applications, ESTEC, Noordwijk, The Netherlands, 21-23 October 1998 / M. Borgeaud (1998)PermalinkThird ERS Symposium on space at the service of our environment, Florence, Italy, 14 - 21 March 1997, 1. Volume 1 / T.D. Guyenne (1997)PermalinkEtude de synergie optique et micro-onde active. Estimation des paramètres de surface en zone semi-aride / Ramata D. Magagi (1995)PermalinkExtraction de paramètres bio-géophysiques à partir des données RSO pour les applications terrestres / Centre national d'études spatiales (1995)PermalinkInfluence de la rugosité de surface en radiométrie micro-onde des sols nus / L. Laguerre (1995)PermalinkMultispectral and microwave sensing of forestry, hydrology, and natural resources / Eric Mougin (1995)PermalinkAgriculture, System description of the wofost 6.0 crop simulation model implemented in CGMS, Volume 1. Theory and algorithms / I. Supit (1994)PermalinkMise en valeur agricole des bas-fonds au Sahel : Typologie, fonctionnement hydrologique, potentialités agricoles / J. Albergel (1993)PermalinkUtilisation de la télédétection pour la cartographie des comportements hydriques de surface / Théa Vogt in Bulletin du comité français de cartographie, n° 127 - 128 (juin - novembre 1991)PermalinkA ratio vegetation index adjusted for soil brightness / D.J. Major in International Journal of Remote Sensing IJRS, vol 11 n° 5 (May 1990)PermalinkProceedings, International Symposium [on] remote sensing and water resources, Enschede, The Netherlands, August 20-24, 1990 / International association of hydrogeologists (1990)PermalinkRadiometric monitoring of moisture stress in irrigated cotton / P. Collier in International Journal of Remote Sensing IJRS, vol 10 n° 8 (August 1989)PermalinkThe application of a weighted infrared-red vegetation index for estimating leaf area index by correcting for soil moisture / J.G. Clevers in Remote sensing of environment, vol 29 n° 1 (July 1989)PermalinkMapping surface soil moisture with L-band radiometric measurements / J.R. Wang in Remote sensing of environment, vol 27 n° 3 (01/03/1989)PermalinkTheoretical study of the sensitivity of the microwave backscattering coefficient to the soil surface parameters / M. Autret in International Journal of Remote Sensing IJRS, vol 10 n° 1 (January 1989)PermalinkNear surface soil moisture estimation from microwave measurements / L. Bruckler in Remote sensing of environment, vol 26 n° 2 (01/11/1988)PermalinkEstimating soil wetness using satellite data / B.J. Choudhury in International Journal of Remote Sensing IJRS, vol 9 n° 7 (July 1988)PermalinkResponse to soil moisture of spectral indexes derived from bidirectional reflectance in Thematic Mapper wavebands / H.B. Musick in Remote sensing of environment, vol 25 n° 2 (01/07/1988)PermalinkEstimating surface soil moisture from satellite microwave measurements and a satellite derived vegetation index / M. Owe in Remote sensing of environment, vol 24 n° 2 (March 1988)PermalinkRemote sensing of soil moisture content over bare soil at microwave frequencies / A.D. Vyas in International Journal of Remote Sensing IJRS, vol 9 n° 2 (February 1988)PermalinkThe effect of measurement error and confusion from vegetation on passive microwave estimates of soil moisture / S.W. Theis in International Journal of Remote Sensing IJRS, vol 9 n° 2 (February 1988)PermalinkApports de la télédétection satellitaire au repérage des sols humides / N. Schneider (01/01/1988)PermalinkLandsat imagery for mapping saline soils and wet lands in north-west India / Ram C. Sharma in International Journal of Remote Sensing IJRS, vol 9 n° 1 (January 1988)PermalinkSoil moisture, organic matter, and iron content effect on the spectral characteristics of selected vertisols and alfisols in Alabama / T.L. Coleman in Photogrammetric Engineering & Remote Sensing, PERS, vol 53 n° 12 (december 1987)PermalinkSatellite remote sensing of drought conditions / C.J. Tucker in Remote sensing of environment, vol 23 n° 2 (01/11/1987)PermalinkOn the contribution of volume scattering to the microwave backscattered signal from wet snow and wet soil / E. Schanda in International Journal of Remote Sensing IJRS, vol 8 n° 10 (October 1987)PermalinkThe relationship between brightness temperature and soil moisture : selection of frequency range for microwave remote sensing / K.S. Rao in International Journal of Remote Sensing IJRS, vol 8 n° 10 (October 1987)PermalinkA statistical optical model for light reflection and penetration through sand / D.L. Neema in International Journal of Remote Sensing IJRS, vol 8 n° 8 (August 1987)PermalinkTemporal observations of surface soil moisture using a passive microwave sensor / Thomas J. Jackson in Remote sensing of environment, vol 21 n° 3 (01/04/1987)PermalinkIdentification et dynamique des milieux agricoles dans le nord-est de la Thaïlande (Udon Thani - Sakon Nakhon) / Michel Bruneau (1986)PermalinkEmploi de la télédétection pour l'étude de l'humidité des sols / Michel-Claude Girard in Géomètre, vol 1985 n° 4 (avril 1985)PermalinkApplications de la télédétection à l'agro-météorologie opérationnelle dans les pays semi-arides, 1er séminaire international de formation organisée par l'ONU, l'OMM, l'ESA & la FAO / T.D. Guyenne (1983)PermalinkContribution à la télédétection hyperfréquence / Michel Pausader (1982)PermalinkSoil moisture detection with microwave- and thermal infrared-sensors in the catchment area Rietholzbach (Switzerland) / R. Meier (1981)PermalinkAnalyse de l'humidité des sols : présentation d'un modèle structural / Michel-Claude Girard in Photo interprétation, vol 1979 n° 4 (Juillet 1979)PermalinkContribution à l'utilisation des microondes dans l'étude des sols / Christine King (1979)Permalink