Physics and Chemistry of the Earth, Part B: Hydrology, Oceans and Atmosphere最新文献_第4页

Hydrologic Response to land use changes on the catchment scale 流域尺度上土地利用变化的水文响应

Physics and Chemistry of the Earth, Part B: Hydrology, Oceans and Atmosphere Pub Date : 2001-01-01 Epub Date: 2001-07-13 DOI: 10.1016/S1464-1909(01)00052-1

N. Fohrer, S. Haverkamp, K. Eckhardt, H.-G. Frede

{"title":"Hydrologic Response to land use changes on the catchment scale","authors":"N. Fohrer, S. Haverkamp, K. Eckhardt, H.-G. Frede","doi":"10.1016/S1464-1909(01)00052-1","DOIUrl":"https://doi.org/10.1016/S1464-1909(01)00052-1","url":null,"abstract":"<div><p>Regional land use changes due to European market policy have far reaching consequences for various landscape functions. Among others land use change influences the local water balance. Simulation models are mostly used to analyse the effect of management practices on water quality but they can also be a useful tool to quantify the hydrologic response of a catchment to different land use options. In this study the physically based, continuous time step model SWAT<sub>mod</sub> has been applied within the joint research project SFB 299 at the Giessen University to support the development of sustainable land use concepts. In a first step the model has been calibrated and validated for four mesoscale watersheds with differing land use distributions. Then the model performance for changing land use has been tested in an artificial watershed with a single crop at one time and one underlying soil type to eliminate the complex interactions of natural watersheds. In relation to forest barley produced the strongest response of the water balance components. Finally a case study for the Dietzhölze watershed with two land use scenarios derived with the ProLand model has been carried out. The impact of land use change on the annual water balance was relatively small due to compensating effects in a complex catchment. The decrease of forest due to a grassland bonus amplifies the peak flow rate and thus increases the risk of flooding.</p></div>","PeriodicalId":101025,"journal":{"name":"Physics and Chemistry of the Earth, Part B: Hydrology, Oceans and Atmosphere","volume":"26 7","pages":"Pages 577-582"},"PeriodicalIF":0.0,"publicationDate":"2001-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1464-1909(01)00052-1","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91635117","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}

引用次数: 393

The use of decision support tools in participatory river basin management 参与式流域管理中决策支持工具的使用

Physics and Chemistry of the Earth, Part B: Hydrology, Oceans and Atmosphere Pub Date : 2001-01-01 Epub Date: 2001-07-13 DOI: 10.1016/S1464-1909(01)00046-6

M. Welp

{"title":"The use of decision support tools in participatory river basin management","authors":"M. Welp","doi":"10.1016/S1464-1909(01)00046-6","DOIUrl":"https://doi.org/10.1016/S1464-1909(01)00046-6","url":null,"abstract":"<div><p>There are growing demands for effective public participation in river basin management. These are posed among others by the proposed EU Water Framework Directive as well as international conventions and policy documents. The demands will raise a need for guidance on exactly how the public is to be involved. In public participation ‘decision support tools’ (DST) and integrated modelling can have a role to play. Many computer tools not only can serve as tools for analysis for experts, but also as vehicles for communication, training, forecasting and experimentation. Illustrated by selected examples of software a range of tools and their potential applications are presented. Essential for the added-value of computer tools in stakeholder participation, in comparison to other methods like expert presentations, fact sheets, etc., is the way they are used. Lessons can be drawn from projects where computer tools were used in other policy areas. Within an European research project on energy and climate policy (ULYSSES) integrated models on global climate change were used in integrated assessment (IA) focus groups. A web-based tutorial for the use of computer models was developed. It gives guidelines for the design and setup of participatory arrangements in conjunction with computer models. Besides procedural recommendations lessons can be drawn concerning the kind of output the tools should provide and the early involvement of users is modelling and software development.</p></div>","PeriodicalId":101025,"journal":{"name":"Physics and Chemistry of the Earth, Part B: Hydrology, Oceans and Atmosphere","volume":"26 7","pages":"Pages 535-539"},"PeriodicalIF":0.0,"publicationDate":"2001-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1464-1909(01)00046-6","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91605981","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}

引用次数: 66

Exploring the urban boundary layer by sodar and tethersonde 利用雷达和绳式探空仪探测城市边界层

Physics and Chemistry of the Earth, Part B: Hydrology, Oceans and Atmosphere Pub Date : 2001-01-01 Epub Date: 2002-01-11 DOI: 10.1016/S1464-1909(01)85001-2

M. Piringer, K. Baumann

引用次数: 0

LINCOM wind flow model: application to complex terrain with thermal stratification LINCOM风流模型在复杂地形热分层中的应用

Physics and Chemistry of the Earth, Part B: Hydrology, Oceans and Atmosphere Pub Date : 2001-01-01 Epub Date: 2001-09-17 DOI: 10.1016/S1464-1909(01)00095-8

F. Dunkerley , J. Moreno , T. Mikkelsen , I.H. Griffiths

引用次数: 8

Influence of tides and river inputs on suspended sediment transport in the Ria de Aveiro lagoon, Portugal 潮汐和河流输入对葡萄牙Ria de Aveiro泻湖悬浮沉积物运输的影响

Physics and Chemistry of the Earth, Part B: Hydrology, Oceans and Atmosphere Pub Date : 2001-01-01 Epub Date: 2001-10-04 DOI: 10.1016/S1464-1909(01)00077-6

J.F. Lopes , J.M. Dias , I. Dekeyser

引用次数: 0

A multi-method study of bedload provenance and transport pathways in an estuarine channel 河口河道河床质物源及搬运途径的多方法研究

Physics and Chemistry of the Earth, Part B: Hydrology, Oceans and Atmosphere Pub Date : 2001-01-01 Epub Date: 2001-10-04 DOI: 10.1016/S1464-1909(01)00080-6

R.W. Duck, J.S. Rowan, P.A. Jenkins, I. Youngs

{"title":"A multi-method study of bedload provenance and transport pathways in an estuarine channel","authors":"R.W. Duck, J.S. Rowan, P.A. Jenkins, I. Youngs","doi":"10.1016/S1464-1909(01)00080-6","DOIUrl":"https://doi.org/10.1016/S1464-1909(01)00080-6","url":null,"abstract":"<div><p>Bedload transport pathways and provenance in the upper reaches of the Tay Estuary, Scotland have been investigated using a combination of three methods, analysis of bedform geometry and asymmetry using echo-sounding and side-scan sonar, the ‘McLaren Model’ of deducing sediment transport from grain size distributions and magnetic susceptibility measurements. The 13.5 km long study reach has been shown to be a complex mixing zone in which bedform asymmetry varies both temporally and spatially. Both grain size transport trends and magnetic susceptibility data suggest that the area is dominated by marine derived bedload but, to the south of the main channel axis, the contribution from fluvial input increases. A simple mixing model based on optimised linear programming has shown the relative contribution made to estuary bed sediments from marine and fluvial sources. With increased distance upstream the role of fluvial sources becomes more pronounced peaking at 24%. Together the results clearly illustrate the dominance of marine-derived bedload in the study area.</p></div>","PeriodicalId":101025,"journal":{"name":"Physics and Chemistry of the Earth, Part B: Hydrology, Oceans and Atmosphere","volume":"26 9","pages":"Pages 747-752"},"PeriodicalIF":0.0,"publicationDate":"2001-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1464-1909(01)00080-6","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"137441666","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}

引用次数: 0

Density fronts: Sieves in the estuarine sediment transfer system? 密度前沿:河口泥沙转移系统中的筛子?

Physics and Chemistry of the Earth, Part B: Hydrology, Oceans and Atmosphere Pub Date : 2001-01-01 Epub Date: 2002-04-16 DOI: 10.1016/S1464-1909(01)85020-6

A.D. Reeves, R.W. Duck

引用次数: 13

Hydrologic Response to land use changes on the catchment scale 流域尺度上土地利用变化的水文响应

Physics and Chemistry of the Earth, Part B: Hydrology, Oceans and Atmosphere Pub Date : 2001-01-01 DOI: 10.1016/S1464-1909(01)00052-1

N. Fohrer, S. Haverkamp, K. Eckhardt, H. Frede

引用次数: 398

Transition mechanism of debris flows over rigid bed to over erodible bed 泥石流从刚性床层向可蚀性床层的过渡机理

Physics and Chemistry of the Earth, Part B: Hydrology, Oceans and Atmosphere Pub Date : 2001-01-01 Epub Date: 2001-03-22 DOI: 10.1016/S1464-1909(00)00235-5

S Egashira , T Itoh , H Takeuchi

{"title":"Transition mechanism of debris flows over rigid bed to over erodible bed","authors":"S Egashira , T Itoh , H Takeuchi","doi":"10.1016/S1464-1909(00)00235-5","DOIUrl":"https://doi.org/10.1016/S1464-1909(00)00235-5","url":null,"abstract":"<div><p>In debris flows over erodible beds, the kinematic conditions at the bed surface, such as velocity and velocity gradient, are determined by the dynamic condition that the driving force must be equal to the yield stress at the bed surface. In debris flows over rigid beds, on the other hand, kinematic quantities depend on such conditions as bed slope, sediment discharge rate, static friction angle of sediment and friction angle of grain to the bed surface. In the present study, the differences between debris flows over erodible and rigid beds as well as the transition between the two are analyzed theoretically by solving for velocity and sediment concentration profiles. An important difference between the two lies in the shear stress distributions near the bed. The velocity gradient takes a finite value in the case of a rigid bed, and zero in the case of an erodible bed, which causes several different features in the profiles of velocity, and sediment concentration, and correspondingly in the flow resistance. The theoretical results are verified by flume data.</p></div>","PeriodicalId":101025,"journal":{"name":"Physics and Chemistry of the Earth, Part B: Hydrology, Oceans and Atmosphere","volume":"26 2","pages":"Pages 169-174"},"PeriodicalIF":0.0,"publicationDate":"2001-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1464-1909(00)00235-5","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91637086","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}

引用次数: 44

Fluid exchange between a recirculation region and the perturbed external flow 再循环区域与受扰动的外部流之间的流体交换

Physics and Chemistry of the Earth, Part B: Hydrology, Oceans and Atmosphere Pub Date : 2001-01-01 Epub Date: 2001-04-24 DOI: 10.1016/S1464-1909(01)00005-3

C. Piccolo, R. Arina, C. Cancelli

引用次数: 1