Claude Bocquillon - Academia.edu (original) (raw)
Papers by Claude Bocquillon
Hydrology and Earth System Sciences, Jun 30, 2000
Journal of Hydrology, Jul 1, 2009
ABSTRACT
Journal of Hydrology, Nov 1, 1996
HAL (Le Centre pour la Communication Scientifique Directe), Dec 15, 2002
The physical properties of snow, including apparent density, snow cover distribution and snowmelt... more The physical properties of snow, including apparent density, snow cover distribution and snowmelt in the Nahr El Kelb basin (Mount Lebanon), were studied in order to design a simple empirical snowmelt model. In February 2001, snow covered an area of 1600 km(2) on Mount Lebanon, representing a water equivalent of 1.1 x 10(9) m(3). The snow surface area was calculated by combining TM5 images with a digital elevation model, and field observations made every three days, from 1400 to 2300 m altitude. The depletion of snow cover was measured from the end of December 2000 to the end of June 2001. The snowmelt was measured from surface depletion on a degree-day basis. A simple model relating the daily snowmelt to the product of wind speed and average positive daily air temperature, is presented and discussed. For Mount Lebanon, this model gave a better approximation of snowmelt than a simple degree-day model
WIT Transactions on Ecology and the Environment, 1970
Environmental Software, 1994
<p>The alarming climatic and anthropogenic impacts call for urgent adaptation and m... more <p>The alarming climatic and anthropogenic impacts call for urgent adaptation and mitigation measures and water management policies that should be more based on regional research by deepening the knowledge on the spatial and temporal variability of hydrological resources all over the Mediterranean.</p><p>A climatic, physiographic, and hydrological homogeneity across the Mediterranean has been detected but not yet confirmed. Mediterranean climate is known for its precipitation seasonality and the alternation of humid winters and dry summers which conditions rivers flow regimes, landcover, agriculture and consequently any water resources management plan. Several physiographic traits could be also observed across the Mediterranean, like the elevated and exposed karstic features, and the cultivated and managed areas. Hydrologically, global river regimes were classified based on monthly average flows only, and Mediterranean regimes were identified under 3 of the 15 global classes with a clear relation to K&#246;ppen&#8217;s Mediterranean climate.</p><p>Thus, we first studied the flow regimes of 55 Mediterranean catchments to verify if Mediterranean rivers fall into same regime class. Second, we characterised the Mediterranean hydrological response through different water balance functional models as advanced by Budyko, L&#8217;vovich and elaborated by Ponce & Shetty and Sivapalan. We also defined from the functional model results the total runoff and groundwater runoff gains as the ratio of the runoff coefficients to annual precipitation, a notion advanced by Ponce and Shetty and elaborated as a sensitivity to precipitation and called elasticity by Harman. The analysis of the runoff gains and elasticity across the Mediterranean and through the climatic and physiographic classes characterised furthermore the hydrological behaviour similarity and variability, and the competition between the water balance components of the Mediterranean catchments.</p><p>The water balance analysis highlighted the Mediterranean trend following the general climatic setting from the wet Northern region to the arid Southern region; it also showed hydrological homogeneity for mountainous karstic and snow influenced catchments which yield the highest baseflows and runoff coefficients, especially those located in moderate climate region. However, they are the least sensitive to the humidity index P/Ep which make their hydrological behaviour very interesting to study under RCP 4.5 or RCP 8.5 climate change scenarios.</p>
Houille Blanche-revue Internationale De L Eau, Sep 1, 1988
Elsevier eBooks, 2020
Abstract This chapter presents an overview of the hydrological response characteristics of Medite... more Abstract This chapter presents an overview of the hydrological response characteristics of Mediterranean catchments. It starts by defining the climatic, hydrological, agro-bioclimatic, and administrative study area boundaries. It describes the physiographic characteristics of the Mediterranean region derived from global data sets of topography, geology, landcover, lithology, soil, and karst. It also describes the main hydro-climatic variables, precipitation, and temperature, controlling the annual water balance components. It then synthesizes the annual water balance, flood events, and droughts studies in the Mediterranean, and discusses the spatial variability and the physiographic and climatic contribution to the hydrological response.
Journal of Hydrology, Dec 1, 1996
Journal of Hydrology, 1983
Journées de l'hydraulique, 1992
Relations between scientists, médias, public and politicians are analysed taking into account the... more Relations between scientists, médias, public and politicians are analysed taking into account the motivations of each group. Some questions are so formulated : What kind of information ? What kind of education ? What are the objectives ? What are the means of action ?Les relations entre le milieu scientifique, les médias, le public, le monde politique sont examinées au travers des motivations de chacun des partenaires. Quelques questions sont posées : Quelle information ? Quelles formations ? Quels objectifs ? Quels moyens ?Bocquillon Claude. Rapport général. Sensibilisation et formation. In: L'avenir de l'eau. Quelques réponses des sciences hydrotechniques à une inquiétude mondiale. Vingt deuxièmes journées de l'hydraulique. Paris, 15-17 septembre 1992. Tome 5, 1992
Hydrological Sciences Journal, 2005
Page 1. Hydrological SciencesJournaldes Sciences Hydrologiques, 50(3) June 2005 * Based on an a... more Page 1. Hydrological SciencesJournaldes Sciences Hydrologiques, 50(3) June 2005 * Based on an article presented at the Conference: Snow Hydrology of Mediterranean Regions at Beyrouth, Lebanon, 1517 December 2002. Open for discussion until 1 December 2005 ...
Journées de l'hydraulique, 1992
The 7th "Journées Hydrologiques", meeting held in Montpellier on September 18th-19th 19... more The 7th "Journées Hydrologiques", meeting held in Montpellier on September 18th-19th 1991, both by ORSTOM and the University of Montpellier II, brought more than 150 participatings, university and research members, teachers and professionals of hydrology. The first day dealt with education for research in hydrology and the second with education for operational hydrology. Both of them led to make an inventory of the existent trainings pieces of advice. This paper draws up a statement of the present situation of hydrologists’education in France, in the basic and applied research and in the engineering sectors.Les journées hydrologiques, organisées les 18 et 19 septembre 1991 à Montpellier, conjointement par l’ORSTOM et l’Université de Montpellier II, ont réuni plus de 150 participants, universitaires et chercheurs, formateurs et professionnels de l’hydrologie. Consacrées l’une à la formation à la recherche, l’autre à la formation pour l’hydrologie opérationnelle, ces deux journées ont permis de faire l’inventaire des formations existantes en France, de donner un état des insuffisances et de faire quelques recommandations destinées à y remédier. Cette communication dresse un bilan de la situation actuelle en France sur la formation des hydrologues dans les secteurs de la recherche fondamentale et appliquée et de l’ingénierie.Bocquillon C., Jaccon Gilbert. 9. - La formation des hydrologues en France. In: L'avenir de l'eau. Quelques réponses des sciences hydrotechniques à une inquiétude mondiale. Vingt deuxièmes journées de l'hydraulique. Paris, 15-17 septembre 1992. Tome 5, 1992
Hydrological Sciences Journal, 1989
On présente le modèle de gestion d&amp;#39;un barrage dont la vocation principale est la ... more On présente le modèle de gestion d&amp;#39;un barrage dont la vocation principale est la satisfaction de la demande en eau agricole, mais qui peut comporter des objectifs secondaires (fourniture d&amp;#39;eau potable et production d&amp;#39;électricité). Pour pouvoir utiliser la méthode classique de la programmation dynamique (PD) une fonction objectif particulière caractérisant l&amp;#39;estimation des recettes agricoles en fonction du rationnement des irrigations,
Journées de l'hydraulique, 1992
Hydrology and Earth System Sciences, Jun 30, 2000
Journal of Hydrology, Jul 1, 2009
ABSTRACT
Journal of Hydrology, Nov 1, 1996
HAL (Le Centre pour la Communication Scientifique Directe), Dec 15, 2002
The physical properties of snow, including apparent density, snow cover distribution and snowmelt... more The physical properties of snow, including apparent density, snow cover distribution and snowmelt in the Nahr El Kelb basin (Mount Lebanon), were studied in order to design a simple empirical snowmelt model. In February 2001, snow covered an area of 1600 km(2) on Mount Lebanon, representing a water equivalent of 1.1 x 10(9) m(3). The snow surface area was calculated by combining TM5 images with a digital elevation model, and field observations made every three days, from 1400 to 2300 m altitude. The depletion of snow cover was measured from the end of December 2000 to the end of June 2001. The snowmelt was measured from surface depletion on a degree-day basis. A simple model relating the daily snowmelt to the product of wind speed and average positive daily air temperature, is presented and discussed. For Mount Lebanon, this model gave a better approximation of snowmelt than a simple degree-day model
WIT Transactions on Ecology and the Environment, 1970
Environmental Software, 1994
<p>The alarming climatic and anthropogenic impacts call for urgent adaptation and m... more <p>The alarming climatic and anthropogenic impacts call for urgent adaptation and mitigation measures and water management policies that should be more based on regional research by deepening the knowledge on the spatial and temporal variability of hydrological resources all over the Mediterranean.</p><p>A climatic, physiographic, and hydrological homogeneity across the Mediterranean has been detected but not yet confirmed. Mediterranean climate is known for its precipitation seasonality and the alternation of humid winters and dry summers which conditions rivers flow regimes, landcover, agriculture and consequently any water resources management plan. Several physiographic traits could be also observed across the Mediterranean, like the elevated and exposed karstic features, and the cultivated and managed areas. Hydrologically, global river regimes were classified based on monthly average flows only, and Mediterranean regimes were identified under 3 of the 15 global classes with a clear relation to K&#246;ppen&#8217;s Mediterranean climate.</p><p>Thus, we first studied the flow regimes of 55 Mediterranean catchments to verify if Mediterranean rivers fall into same regime class. Second, we characterised the Mediterranean hydrological response through different water balance functional models as advanced by Budyko, L&#8217;vovich and elaborated by Ponce & Shetty and Sivapalan. We also defined from the functional model results the total runoff and groundwater runoff gains as the ratio of the runoff coefficients to annual precipitation, a notion advanced by Ponce and Shetty and elaborated as a sensitivity to precipitation and called elasticity by Harman. The analysis of the runoff gains and elasticity across the Mediterranean and through the climatic and physiographic classes characterised furthermore the hydrological behaviour similarity and variability, and the competition between the water balance components of the Mediterranean catchments.</p><p>The water balance analysis highlighted the Mediterranean trend following the general climatic setting from the wet Northern region to the arid Southern region; it also showed hydrological homogeneity for mountainous karstic and snow influenced catchments which yield the highest baseflows and runoff coefficients, especially those located in moderate climate region. However, they are the least sensitive to the humidity index P/Ep which make their hydrological behaviour very interesting to study under RCP 4.5 or RCP 8.5 climate change scenarios.</p>
Houille Blanche-revue Internationale De L Eau, Sep 1, 1988
Elsevier eBooks, 2020
Abstract This chapter presents an overview of the hydrological response characteristics of Medite... more Abstract This chapter presents an overview of the hydrological response characteristics of Mediterranean catchments. It starts by defining the climatic, hydrological, agro-bioclimatic, and administrative study area boundaries. It describes the physiographic characteristics of the Mediterranean region derived from global data sets of topography, geology, landcover, lithology, soil, and karst. It also describes the main hydro-climatic variables, precipitation, and temperature, controlling the annual water balance components. It then synthesizes the annual water balance, flood events, and droughts studies in the Mediterranean, and discusses the spatial variability and the physiographic and climatic contribution to the hydrological response.
Journal of Hydrology, Dec 1, 1996
Journal of Hydrology, 1983
Journées de l'hydraulique, 1992
Relations between scientists, médias, public and politicians are analysed taking into account the... more Relations between scientists, médias, public and politicians are analysed taking into account the motivations of each group. Some questions are so formulated : What kind of information ? What kind of education ? What are the objectives ? What are the means of action ?Les relations entre le milieu scientifique, les médias, le public, le monde politique sont examinées au travers des motivations de chacun des partenaires. Quelques questions sont posées : Quelle information ? Quelles formations ? Quels objectifs ? Quels moyens ?Bocquillon Claude. Rapport général. Sensibilisation et formation. In: L'avenir de l'eau. Quelques réponses des sciences hydrotechniques à une inquiétude mondiale. Vingt deuxièmes journées de l'hydraulique. Paris, 15-17 septembre 1992. Tome 5, 1992
Hydrological Sciences Journal, 2005
Page 1. Hydrological SciencesJournaldes Sciences Hydrologiques, 50(3) June 2005 * Based on an a... more Page 1. Hydrological SciencesJournaldes Sciences Hydrologiques, 50(3) June 2005 * Based on an article presented at the Conference: Snow Hydrology of Mediterranean Regions at Beyrouth, Lebanon, 1517 December 2002. Open for discussion until 1 December 2005 ...
Journées de l'hydraulique, 1992
The 7th "Journées Hydrologiques", meeting held in Montpellier on September 18th-19th 19... more The 7th "Journées Hydrologiques", meeting held in Montpellier on September 18th-19th 1991, both by ORSTOM and the University of Montpellier II, brought more than 150 participatings, university and research members, teachers and professionals of hydrology. The first day dealt with education for research in hydrology and the second with education for operational hydrology. Both of them led to make an inventory of the existent trainings pieces of advice. This paper draws up a statement of the present situation of hydrologists’education in France, in the basic and applied research and in the engineering sectors.Les journées hydrologiques, organisées les 18 et 19 septembre 1991 à Montpellier, conjointement par l’ORSTOM et l’Université de Montpellier II, ont réuni plus de 150 participants, universitaires et chercheurs, formateurs et professionnels de l’hydrologie. Consacrées l’une à la formation à la recherche, l’autre à la formation pour l’hydrologie opérationnelle, ces deux journées ont permis de faire l’inventaire des formations existantes en France, de donner un état des insuffisances et de faire quelques recommandations destinées à y remédier. Cette communication dresse un bilan de la situation actuelle en France sur la formation des hydrologues dans les secteurs de la recherche fondamentale et appliquée et de l’ingénierie.Bocquillon C., Jaccon Gilbert. 9. - La formation des hydrologues en France. In: L'avenir de l'eau. Quelques réponses des sciences hydrotechniques à une inquiétude mondiale. Vingt deuxièmes journées de l'hydraulique. Paris, 15-17 septembre 1992. Tome 5, 1992
Hydrological Sciences Journal, 1989
On présente le modèle de gestion d&amp;#39;un barrage dont la vocation principale est la ... more On présente le modèle de gestion d&amp;#39;un barrage dont la vocation principale est la satisfaction de la demande en eau agricole, mais qui peut comporter des objectifs secondaires (fourniture d&amp;#39;eau potable et production d&amp;#39;électricité). Pour pouvoir utiliser la méthode classique de la programmation dynamique (PD) une fonction objectif particulière caractérisant l&amp;#39;estimation des recettes agricoles en fonction du rationnement des irrigations,
Journées de l'hydraulique, 1992