地球信息科学学报
地毬信息科學學報
지구신식과학학보
GEO-INFORMATION SCIENCE
2015年
2期
215-221
,共7页
朱军%尹灵芝%曹振宇%张翔%徐柱%龚竞
硃軍%尹靈芝%曹振宇%張翔%徐柱%龔競
주군%윤령지%조진우%장상%서주%공경
时空过程模拟%网络GIS服务%溃坝洪水%可视化交互分析%WebGL
時空過程模擬%網絡GIS服務%潰壩洪水%可視化交互分析%WebGL
시공과정모의%망락GIS복무%궤패홍수%가시화교호분석%WebGL
spatiotemporal process simulation%WebGIS service%dam-break flood%interactive visualization anal-ysis%WebGL
洪水溃坝等复杂灾害现象的时空过程模拟分析,是当前国际地理信息科学热点研究方向之一。随着网络的普及化,公众对GIS时空分析模型的网络实时集成和可视化分析提出了迫切的需求。本文以溃坝洪水为例开展了时空过程网络可视化模拟与分析服务研究,利用WebGL、HTML5、Ajax、Web Service、GPU并行计算等技术手段,通过探讨溃坝洪水时空模型计算优化、网络三维可视化模拟与动态交互分析等关键技术,研发了原型系统并进行应用实验。实验结果表明,本文研究成果有助于实现时空过程信息的网络发布,在线影响分析及动态可视化服务,可为分布式网络环境下溃坝洪水等时空过程信息管理和应急决策提供科学依据和技术支持。
洪水潰壩等複雜災害現象的時空過程模擬分析,是噹前國際地理信息科學熱點研究方嚮之一。隨著網絡的普及化,公衆對GIS時空分析模型的網絡實時集成和可視化分析提齣瞭迫切的需求。本文以潰壩洪水為例開展瞭時空過程網絡可視化模擬與分析服務研究,利用WebGL、HTML5、Ajax、Web Service、GPU併行計算等技術手段,通過探討潰壩洪水時空模型計算優化、網絡三維可視化模擬與動態交互分析等關鍵技術,研髮瞭原型繫統併進行應用實驗。實驗結果錶明,本文研究成果有助于實現時空過程信息的網絡髮佈,在線影響分析及動態可視化服務,可為分佈式網絡環境下潰壩洪水等時空過程信息管理和應急決策提供科學依據和技術支持。
홍수궤패등복잡재해현상적시공과정모의분석,시당전국제지리신식과학열점연구방향지일。수착망락적보급화,공음대GIS시공분석모형적망락실시집성화가시화분석제출료박절적수구。본문이궤패홍수위례개전료시공과정망락가시화모의여분석복무연구,이용WebGL、HTML5、Ajax、Web Service、GPU병행계산등기술수단,통과탐토궤패홍수시공모형계산우화、망락삼유가시화모의여동태교호분석등관건기술,연발료원형계통병진행응용실험。실험결과표명,본문연구성과유조우실현시공과정신식적망락발포,재선영향분석급동태가시화복무,가위분포식망락배경하궤패홍수등시공과정신식관리화응급결책제공과학의거화기술지지。
Many complicated geographic phenomena such as dam-break flood were complex giant systems, and the dynamic development of their spatiotemporal process is more important than the final formation of the spa-tial pattern. Therefore, the simulation and analysis of spatiotemporal process and the disaster forecasting warning have become a hot research direction in the field of geographic information science. Meanwhile, with the popu-larization of Web-GIS technology, the integration of real-time content on web and the visual expression of geo-graphic spatiotemporal process simulation are also demanded by the public urgently. With the rapid development of web service, network technology and their applications in GIS, it is possible to realize the visualization analy-sis, share and manage distributed spatial data on different clients. After analyzing the latest Web-GIS technology, this paper focuses on the simulation and visual analysis of dam-break flooding spatiotemporal process in the net-work environment, which can be implemented by applying HTML5, WebGL, Ajax, Web Service technology and other technologies. Some key technologies, which include rapid computing of spatiotemporal process model, B/S network architecture construction, three-dimensional scene rendering optimization, and dynamic interaction analysis,are also discussed in details. Finally, a prototype system was constructed and an experiment of the net-work simulation and visual analysis of a dam-break flood spatiotemporal process case was conducted on a study region. Experimental results showed that the methods addressed in this paper could successfully publish spatio-temporal process information, conduct online impact analysis and realize the three-dimensional visualization rep-resentation under the network environment, which could meet different requirements of browsing, querying and analyzing. It can provide an efficient support to dam-break management and emergency decision-making.