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Termes IGN > sciences naturelles > sciences de la Terre et de l'univers > géosciences > géographie physique > hydrographie > modèle hydrographique
modèle hydrographiqueSynonyme(s)modèle hydrologique modèle hydraulique |
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Evaluating terrestrial water storage variations from regionally constrained GRACE mascon data and hydrological models over Southern Africa: preliminary results / P. Krogh in International Journal of Remote Sensing IJRS, vol 31 n° 14 (July 2010)
[article]
Titre : Evaluating terrestrial water storage variations from regionally constrained GRACE mascon data and hydrological models over Southern Africa: preliminary results Type de document : Article/Communication Auteurs : P. Krogh, Auteur ; O. Andersen, Auteur ; C. Michailovsky, Auteur ; et al., Auteur Année de publication : 2010 Article en page(s) : pp 3899 - 3912 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications de géodésie spatiale
[Termes IGN] Afrique du sud (état)
[Termes IGN] champ de pesanteur local
[Termes IGN] données GRACE
[Termes IGN] Malawi
[Termes IGN] modèle hydrographique
[Termes IGN] ressources en eau
[Termes IGN] variable régionalisée
[Termes IGN] variationRésumé : (Auteur) A concentration of surface mass has a distinct, localized signature in Gravity Recovery and Climate Experiment (GRACE) K-band range rate (KBRR) data. This fact is exploited in the regional solutions for mass concentration parameters (mascons) made at the Goddard Space Flight Center (GSFC). In this paper we explore an experimental set of regionally constrained mascon blocks over Southern Africa where a system of 1.25° times 1.5° and 1.5° times 1.5° blocks has been designed. The blocks are divided into hydrological regions based on drainage patterns of the largest river basins, and are constrained in different ways. We show that the use of regional constraints, when solving mascon parameters of different hydrological regions independently, yields more detail and variation than comparable spherical harmonic solutions and mascon solutions using isotropic constraints. We validate our results over Lake Malawi with water level from altimetry. Results show that weak constraints across regions in addition to intra-regional constraints are necessary, to reach reasonable mass variations. Numéro de notice : A2010-372 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1080/01431161.2010.483483 En ligne : https://doi.org/10.1080/01431161.2010.483483 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=30566
in International Journal of Remote Sensing IJRS > vol 31 n° 14 (July 2010) . - pp 3899 - 3912[article]Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 080-2010091 RAB Revue Centre de documentation En réserve L003 Exclu du prêt Evaluation of a satellite-based global flood monitoring system / K. Yilmaz in International Journal of Remote Sensing IJRS, vol 31 n° 14 (July 2010)
[article]
Titre : Evaluation of a satellite-based global flood monitoring system Type de document : Article/Communication Auteurs : K. Yilmaz, Auteur ; R. Adler, Auteur ; Yuan Tian, Auteur ; et al., Auteur Année de publication : 2010 Article en page(s) : pp 3763 - 3782 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications de télédétection
[Termes IGN] erreur systématique
[Termes IGN] image satellite
[Termes IGN] image TRMM-MI
[Termes IGN] inondation
[Termes IGN] modèle hydrographique
[Termes IGN] prévention des risques
[Termes IGN] risque naturel
[Termes IGN] ruissellement
[Termes IGN] surveillance hydrologiqueRésumé : (Auteur) This study provides an initial evaluation of a global flood monitoring system (GFMS) using satellite-based precipitation and readily available geospatial datasets. The GFMS developed by our group uses a relatively simple hydrologic model, based on the run-off curve number method, to transform precipitation into run-off. A grid-to-grid routing scheme moves run-off downstream. Precipitation estimates are from the TRMM Multi-satellite Precipitation Analysis (TMPA). We first evaluated the TMPA algorithm using a radar/gauge merged precipitation product (Stage IV) over south-east USA. This analysis indicated that the spatial scale (and hence the basin size) as well as regional and seasonal considerations are important in using the TMPA to drive hydrologic models. GFMS-based run-off simulations were evaluated using observed streamflow data at the outlet of two US basins and also using a global flood archive. Basin-scale analysis showed that the GFMS was able to simulate the onset of flood events produced by heavy precipitation; however, the simulation performance deteriorated in the later stages. This result points out the need for an improved routing component. Global-scale analysis indicated that the GFMS is able to detect 38% of the observed floods; however, it suffers from region-dependent bias. Numéro de notice : A2010-370 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1080/01431161.2010.483489 En ligne : https://doi.org/10.1080/01431161.2010.483489 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=30564
in International Journal of Remote Sensing IJRS > vol 31 n° 14 (July 2010) . - pp 3763 - 3782[article]Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 080-2010091 RAB Revue Centre de documentation En réserve L003 Exclu du prêt Land cover characterization for hydrological modelling using thermal infrared emissivities / A. French in International Journal of Remote Sensing IJRS, vol 31 n° 14 (July 2010)
[article]
Titre : Land cover characterization for hydrological modelling using thermal infrared emissivities Type de document : Article/Communication Auteurs : A. French, Auteur ; A. Inamdar, Auteur Année de publication : 2010 Article en page(s) : pp 3867 - 3883 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications de télédétection
[Termes IGN] caractérisation
[Termes IGN] couvert végétal
[Termes IGN] emissivité
[Termes IGN] évapotranspiration
[Termes IGN] image infrarouge
[Termes IGN] image Terra-MODIS
[Termes IGN] image thermique
[Termes IGN] Kansas (Etats-Unis ; état)
[Termes IGN] modèle hydrographique
[Termes IGN] Oklahoma (Etats-Unis)Résumé : (Auteur) Remote sensing with multispectral thermal infrared can improve regional estimation of evapotranspiration (ET) by providing new constraints on land surface energy balance. Current models use visible and near infrared bands to obtain vegetative cover, and sometimes use thermal infrared data for land surface temperature. Together these can yield good ET estimates. However, it may be possible to do even better by using remotely sensed thermal infrared emissivity, a surface property related to fractional vegetative cover but independent of plant greenness. Emissivities derived from clear-sky Moderate Resolution Imaging Spectroradiometer (MODIS) observations obtained in 2007 over the Southern Great Plains (Oklahoma and Kansas), USA, were compared with changes in Normalized Difference Vegetation Index (NDVI) for winter wheat and grazing land. Emissivity changes were independent of NDVI and sensitive to standing canopies, regardless of growth stage or senescence. Thus emissivities were seasonally dynamic, able to detect wheat harvest timing, and helpful for modelling ET. Numéro de notice : A2010-371 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1080/01431161.2010.483491 En ligne : https://doi.org/10.1080/01431161.2010.483491 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=30565
in International Journal of Remote Sensing IJRS > vol 31 n° 14 (July 2010) . - pp 3867 - 3883[article]Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 080-2010091 RAB Revue Centre de documentation En réserve L003 Exclu du prêt An object-oriented shared data model for GIS and distributed hydrologic models / Muneendra Kumar in International journal of geographical information science IJGIS, vol 24 n°7-8 (july 2010)
[article]
Titre : An object-oriented shared data model for GIS and distributed hydrologic models Type de document : Article/Communication Auteurs : Muneendra Kumar, Auteur ; G. Bhatt, Auteur ; C. Duffy, Auteur Année de publication : 2010 Article en page(s) : pp 1061 - 1079 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géomatique
[Termes IGN] composant SIG
[Termes IGN] interface utilisateur
[Termes IGN] modèle conceptuel de données localisées
[Termes IGN] modèle hydrographique
[Termes IGN] modèle orienté objet
[Termes IGN] UMLRésumé : (Auteur) Distributed physical models for the space-time distribution of water, energy, vegetation, and mass flow require new strategies for data representation, model domain decomposition, a priori parameterization, and visualization. The geographic information system (GIS) has been traditionally used to accomplish these data management functionalities in hydrologic applications. However, the interaction between the data management tools and the physical model are often loosely integrated and nondynamic. This is because (a) the data types, semantics, resolutions, and formats for the physical model system and the distributed data or parameters may be different, with significant data preprocessing required before they can be shared; (b) the management tools may not be accessible or shared by the GIS and physical model; and (c) the individual systems may be operating system dependent or are driven by proprietary data structures. The impediment to seamless data flow between the two software components has the effect of increasing the model setup time and analysis time of model output results, and also makes it restrictive to perform sophisticated numerical modeling procedures (real-time forecasting, sensitivity analysis, etc.) that utilize extensive GIS data. These limitations can be offset to a large degree by developing an integrated software component that shares data between the (hydrologic) model and the GIS modules. We contend that the prerequisite for the development of such an integrated software component is a 'shared data model', which is designed using an object-oriented strategy. Here we present the design of such a shared data model taking into consideration the data type descriptions, identification of data classes, relationships, and constraints. The developed data model has been used as a method base for developing a coupled GIS interface to Penn State Integrated Hydrologic Model (PIHM), called PIHMgis. Numéro de notice : A2010-320 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article DOI : 10.1080/13658810903289460 En ligne : https://doi.org/10.1080/13658810903289460 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=30514
in International journal of geographical information science IJGIS > vol 24 n°7-8 (july 2010) . - pp 1061 - 1079[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 079-2010041 RAB Revue Centre de documentation En réserve L003 Disponible 079-2010042 RAB Revue Centre de documentation En réserve L003 Disponible The GHYRAF (Gravity and Hydrology in Africa) experiment: Description and first results / Jacques Hinderer in Journal of geodynamics, vol 48 n° 3-5 (December 2009)
[article]
Titre : The GHYRAF (Gravity and Hydrology in Africa) experiment: Description and first results Type de document : Article/Communication Auteurs : Jacques Hinderer, Auteur ; Caroline de Linage, Auteur ; Jean-Paul Boy, Auteur ; et al., Auteur ; Olivier Bock , Auteur Année de publication : 2009 Article en page(s) : pp 172 - 181 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications de géodésie spatiale
[Termes IGN] Afrique occidentale
[Termes IGN] gravimétrie
[Termes IGN] hydrologie
[Termes IGN] modèle hydrographique
[Termes IGN] mousson
[Termes IGN] SahelRésumé : (auteur) This paper is the first presentation of a project called GHYRAF (Gravity and Hydrology in Africa) devoted to the detailed comparison between models and multidisciplinary observations (ground and satellite gravity, geodesy, hydrology, meteorology) of the variations of water storage in Africa from the Sahara arid part to the monsoon equatorial part. We describe the various actions planned in this project. We first detail the actions planned in gravimetry which consist in two main surface gravity experiments: on the one hand the periodic repetition of absolute gravity measurements along a north–south monsoonal gradient of rainfall in West Africa, going from Tamanrasset (20 mm/year) in southern Algeria to Djougou (1200 mm/year) in central Benin; on the other hand the continuous measurements at Djougou (Benin) with a superconducting gravimeter to monitor with a higher sampling rate the gravity changes related to an extreme hydrological cycle. Another section describes the actions planned in GPS which will maintain and develop the present-day existing network in West Africa. The third type of actions deals with hydrology and we review the three sites that will be investigated in this joint hydrogeophysics project namely Wankama (near Niamey) and Bagara (near Diffa) in the Niger Sahelian zone and Nalohou (near Djougou) in the Benin monsoon zone. We also address the question of the ground truth of satellite-derived missions; in this context the GHYRAF project will lead to test the hydrology models by comparison both with in situ and satellite data such as GRACE, as well as to an important increase of our knowledge of the seasonal water cycle in Africa. We finally present preliminary results in GPS based on the analysis of the vertical motion of the Djougou site. The resulting absolute gravity changes related to the 2008 monsoon are finally given. Numéro de notice : A2009-584 Affiliation des auteurs : IGN+Ext (1940-2011) Thématique : POSITIONNEMENT Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1016/j.jog.2009.09.014 Date de publication en ligne : 03/10/2009 En ligne : https://doi.org/10.1016/j.jog.2009.09.014 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=89894
in Journal of geodynamics > vol 48 n° 3-5 (December 2009) . - pp 172 - 181[article]An efficient domain decomposition framework for accurate representation of geodata in distributed hydrologic models / Muneendra Kumar in International journal of geographical information science IJGIS, vol 23 n°11-12 (november 2009)PermalinkUsing NHDPlus as the land base for the Noah-distributed model / Christian David in Transactions in GIS, vol 13 n° 4 (August 2009)PermalinkInteroperability of functions in environmental models: a case study in hydrological modeling / S. Hu in International journal of geographical information science IJGIS, vol 23 n° 5 (may 2009)PermalinkKalypso open source: a GIS-based platform for environmental and water resources modeling / G. Belger in Geoinformatics, vol 12 n° 2 (01/03/2009)PermalinkPhysically consistent system model for the study of the Earth's rotation, surface deformation and gravity field parameters / A. Hense (2009)PermalinkA spatiotemporal data model for river basin-scale hydrologic systems / J.L. Goodall in International journal of geographical information science IJGIS, vol 23 n° 1-2 (january 2009)PermalinkModélisation prospective spatialisée à l'école locale : approche méthodologique / Thomas Houet in Revue internationale de géomatique, vol 18 n° 3 (septembre - novembre 2008)PermalinkModélisation du ruissellement érosif par automate cellulaire / D. Gaillard in Revue internationale de géomatique, vol 18 n° 3 (septembre - novembre 2008)PermalinkReconstitution de la géométrie d'un glacier disparu et modélisation des conséquences de sa disparition : exemple du glacier durancien lors du dernier maximum glaciaire / E. Cossart in Revue internationale de géomatique, vol 18 n° 1 (mars – mai 2008)PermalinkIdentifying components for interoperable process models using concept lattice and semantic reference system / L. Bian in International journal of geographical information science IJGIS, vol 21 n° 9-10 (october 2007)Permalink