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11.
小流域综合管理信息系统集成研究 总被引：14，自引：2，他引：14
本文介绍的小流域管理与决策支持信息系统 ,是以小流域综合治理与科学决策为目标 ,以地块为基本操作单元的土壤侵蚀模型、生产潜力模型、成本效益模型与GIS的集成系统。该系统具有数据管理、查询、更新、处理、模型分析和输出等多种功能。分析模型与GIS集成的基本单元是地块 (landunit) ,在地块上实现模型参数的提取与传递、模型计算及显示与分析。在分析各种集成方式的基础上 ,选取了动态连接库及其扩展方式 ,实现了土壤侵蚀模型、生产潜力模型、成本效益模型、规划模块与GIS的紧密集成 ,以统一的图形用户界面 ,服务于水土保持的现代化管理和小流域综合治理 相似文献
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When are two landscape pattern indices significantly different? 总被引：5，自引：0，他引：5
13.
An outline of neotectonic structures and morphotectonics of the western and central Pannonian Basin 总被引：1，自引：0，他引：1
Lszl Fodor Gbor Bada Gbor Csillag Erzsbet Horvth Zsfia Ruszkiczay-Rüdiger Klra Palots Ferenc Síkhegyi Gbor Timr Sierd Cloetingh Frank Horvth 《Tectonophysics》2005,410(1-4):15-41
Neotectonic deformation in the western and central part of the Pannonian Basin was investigated by means of surface and subsurface structural analyses, and geomorphologic observations. The applied methodology includes the study of outcrops, industrial seismic profiles, digital elevation models, topographic maps, and borehole data. Observations suggest that most of the neotectonic structures in the Pannonian Basin are related to the inverse reactivation of earlier faults formed mainly during the Miocene syn- and post-rift phases. Typical structures are folds, blind reverse faults, and transpressional strike-slip faults, although normal or oblique-normal faults are also present. These structures significantly controlled the evolution of landforms and the drainage pattern by inducing surface upwarping and river deflections. Our analyses do not support the postulated tectonic origin of some landforms, particularly that of the radial valley system in the western Pannonian Basin. The most important neotectonic strike-slip faults are trending to east-northeast and have dextral to sinistral kinematics in the south-western and central-eastern part of the studied area, respectively. The suggested along-strike change of kinematics within the same shear zones is in agreement with the fan-shaped recent stress trajectories and with the present-day motion of crustal blocks derived from GPS data. 相似文献
14.
Károly Németh Shane J. Cronin Miguel J. Haller Marco Brenna Gabor Csillag 《Central European Journal of Geosciences》2010,2(3):339-361
The Pannonian Basin (Central Europe) hosts numerous alkali basaltic volcanic fields in an area similar to 200 000 km2. These volcanic fields were formed in an approximate time span of 8 million years producing smallvolume volcanoes typically considered to be monogenetic. Polycyclic monogenetic volcanic complexes are also common in each field however. The original morphology of volcanic landforms, especially phreatomagmatic volcanoes, is commonly modified. by erosion, commonly aided by tectonic uplift. The phreatomagmatic volcanoes eroded to the level of their sub-surface architecture expose crater to conduit filling as well as diatreme facies of pyroclastic rock assemblages. Uncertainties due to the strong erosion influenced by tectonic uplifts, fast and broad climatic changes, vegetation cover variations, and rapidly changing fluvio-lacustrine events in the past 8 million years in the Pannonian Basin have created a need to reconstruct and visualise the paleoenvironment into which the monogenetic volcanoes erupted. Here phreatomagmatic volcanic fields of the Miocene to Pleistocene western Hungarian alkali basaltic province have been selected and compared with modern phreatomagmatic fields. It has been concluded that the Auckland Volcanic Field (AVF) in New Zealand could be viewed as a prime modern analogue for the western Hungarian phreatomagmatic fields by sharing similarities in their pyroclastic successions textures such as pyroclast morphology, type, juvenile particle ratio to accidental lithics. Beside the AVF two other, morphologically more modified volcanic fields (Pali Aike, Argentina and Jeju, Korea) show similar features to the western Hungarian examples, highlighting issues such as preservation potential of pyroclastic successions of phreatomagmatic volcanoes. 相似文献