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geomorphology-oriented theoretical framework and construction method for value-added DEM

Journal of Geographical Sciences 2024年第1期34卷 165-184页

作者： ZHANG Haiping TANG Guoan XIONG Liyang YANG Xin LI Fayuan Key Laboratory of Virtual Geographic Environment Ministry of EducationNanjing Normal UniversityNanjing 210023China School of Geography Nanjing Normal UniversityNanjing 210023China Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application Nanjing 210023China

Digital elevation model(DEM)plays a fundamental role in the study of the earth system by expressing surface configuration,understanding surface process,and revealing surface *** is widely used in analysis and modeling in the field of ***,traditional DEM has the defect of single attribute,which is difficult to support the research in earth system science oriented to geoscience process and mechanism ***,realizing the value-added data model on the basis of traditional DEM is necessary to serve digital elevation modeling and terrain analysis under the background of a new geomorphology research paradigm and earth observation technology.A theoretical framework for value-added DEM that mainly includes concept,connotation,content,and categories,is constructed in this *** relationship between different types of value-added DEMs as well as the research significance and application category of this theoretical framework are also *** following are different methods of value-added DEMs:(1)value-added methods of DEM space and time dimensions that emphasize the integration of the ground and underground as well as coupling of time and space,(2)attribute-based value-added methods composed of material(including underground,surface,and ground)and morphological properties,and(3)value-added methods of features and physical elements that consider geographical objects and landform features formed by natural processes and artificial *** digital terrace,slope,and watershed models are used as examples to illustrate application scenarios of the three kinds of value-added *** study aims to improve expression methods of DEMs under the background of new surveying and mapping technologies by adding value to the DEM at three levels of dimensions,attributes,and elements as well as support knowledge-driven digital geomorphological analysis in the era of big data.

关键词： spatial data model value-added DEM digital terrain analysis geomorphological ontology geomorphology

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geomorphology-oriented digital terrain analysis:Progress and perspectives

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Journal of Geographical Sciences 2021年第3期31卷 456-476页

作者： XIONG Liyang TANG Guoan YANG Xin LI Fayuan School of Geography Nanjing Normal UniversityNanjing 210023China Key Laboratory of Virtual Geographic Environment(Nanjing Normal University) Ministry of EducationNanjing 210023China Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application Nanjing 210023China

Digital terrain analysis(DTA)is one of the most important contents in the research of geographical information science(GIS).However,on the basis of the digital elevation model(DEM),many problems exist in the current research of DTA in geomorphological *** instance,the current DTA research appears to be focused more on morphology,phenomenon,and modern surface rather than mechanism,process,and underlying *** current DTA research needs to be urgently transformed from the study of landform morphology to one focusing on landform process and *** this basis,this study summarizes the current research status of geomorphology-oriented DTA and systematically reviews and analyzes the research about the knowledge of geomorphological ontology,terrain modeling,terrain derivative calculation,and terrain analytical *** the help of DEM data,DTA research has the advantage of carrying out geomorphological studies from the perspective of surface ***,the study of DTA has inherent defects in terms of data expression and analytic ***,breakthroughs in basic theories and key technologies are ***,scholars need to realize that DTA research must be transformed from phenomenon to mechanism,from morphology to process,and from terrain to *** present,the research development of earth science has reached the critical stage in which the DTA research should focus more on geomorphological ***,this study proposes several prospects of geomorphology-oriented DTA from the aspects of value-added DEM data model,terrain derivatives and their spatial relations,and macro-terrain *** study of DTA based on DEM is at a critical period along with the issue on whether the current GIS technology can truly support the development of *** research idea of geomorphology-oriented DTA is expected to be an important exploration and practice in the field of GIS.

关键词： digital terrain analysis geomorphology ontology digital elevation model terrain derivative geographical information science

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geomorphology visualization modeling and tidal current virtual reality for coastal ocean

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Chinese Science Bulletin 2001年第S1期46卷 87-90页

作者： MA Jingsong GE Chengdong HUANG Xingyuan Department of Geo&Ocean Sciences Nanjing UniversityNanjing 210093China The Key Laboratory of Coast and Island Development of Ministry of Education Nanjing UniversityNanjing 210093China

The new technology of geomorphology visualization modeling and virtual reality for tidal current numerical simulation are the important methods utilized in coastal ocean research. In the project of studying the evolutionary trend of radial sand ridges in South Yellow Sea of China, this method becomes the key to reveal the correlation betweenthe seabed topography and the hydrodynamic factor——tidal current. It is proved that using the geomorphology visualization and tidal virtual reality techniques, oceanog-raphers might be able to intuitively discover the interaction pattern of sand ridges and tidal current, predicting the development of sand ridge stability in the future. Furthermore,a prototypic software system——VROcean was designed andimplemented to examine the performance of the new visualization technology on the contrast to traditional methods.

关键词： geomorphology visualization model tidal current simu- lation virtual reality coastal ocean.

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The impact of geomorphology of marsh creeks on fish assemblage in Changjiang River estuary

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Chinese Journal of Oceanology and Limnology 2014年第2期32卷 469-479页

作者：金斌松许旺郭立陈家宽傅萃长 Center for Watershed Ecology Institute of Life Science and Key Laboratory of Poyang Lake Environment and Resource UtilizationMinistry of EducationNanchang University Ministry of Education Key Laboratory for Biodiversity Science and Ecological Engineering Institute of Biodiversity ScienceFudan University State Key Laboratory of Earth Surface Process and Resource Ecology Beijing Normal University

Tidal marshes are an important habitat and nursery area for fi *** the past few decades,rapid economic development in the coastal areas of China has led to the interruption and destruction of an increasing number of tidal *** growing interest in tidal marsh restoration has increased the need to understand the relationship between geomorphological features and fi sh assemblages in the design of marsh restoration *** studied temporal variations in,and the effects of creek geomorphological features on,the estuarine tidal creek fi sh *** modifi ed channel nets,we sampled fi sh monthly from March 2007 to February 2008 from seven tidal creeks along an intertidal channel system in Chongming Dongtan National Nature *** creek geomorphological variables were measured or derived to characterize intertidal creek geomorphological *** Gobiidae,with 10 species,was the most speciesrich *** most abundant fi sh species were Liza affi nis,Chelon haematocheilus,and Lateolabrax *** fi sh community was dominated by juvenile marine transients,which comprised about 80% of the total *** highest abundance of fi sh occurred in June and July,and the highest biomass occurred in *** redundancy analyses demonstrated that depth,steepness,cross-sectional area,and volume signifi cantly affected the fi sh species *** nis favored small creeks with high *** ommaturus,Acanthogobius luridus,and Carassius auratus preferred deep,steep creeks with a large cross-sectional area and *** fi ndings indicate that the geomorphological features of tidal creeks should be considered in the conservation and sustainable management of fi sh species and in the restoration of salt marshes.

关键词： intertidal environment habitat selection geomorphology restoration salt marshes Changjiang (Yangtze) River estuary

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Paleostructural geomorphology of the Paleozoic central uplift belt and its constraint on the development of depositional facies in the Tarim Basin

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Science China Earth Sciences 2009年第6期52卷 823-834页

作者： LIN ChangSong YANG HaiJun LIU JingYan PENG Li CAI ZhenZhong YANG XiaoFa YANG YongHeng School of Energy Resources China University of GeosciencesBeijing 100083China Petroleum Exploration and Production Institute Sino-Petroleum and Chemistry CooperationBeijing 100083China

Inclined eastward and consisting of the Hetianhe, Hetianhedong, Tazhong paleouplifts and Bachu paleoslope, the central paleouplift belt in the Tarim Basin was a large composite paleouplift and paleoslope belt with complicated palaeogeomorphic features during the Middle to early Late Ordovician. A number of paleostructural geomorphic elements have been identified in the paleouplift belt and surrounding areas, such as the high uplift belts, the faulted uplift platforms, the marginal slopes and slope break zones flanking the paleouplift belt, the surrounding shelf slopes or low relief ramps, the shelf slope break zones and deep basin plains. They exerted great influence on the development of paleogeography of the basin. The marginal slopes and slope break zones flanking the uplift belt constrained the formation and deposition of the high-energy facies including reefal and shoal deposits during the Late Ordovician, which comprise the major reservoirs of the Lower Paleozoic in the basin. Toward the end of the Ordovician, the Tazhong paleouplift hinged westward and became a westward-dipped nose as the southeastern margin of the basin was strongly compressed and uplifted. The tectono-paleogeomorphic framework of the central northern basin during the Early Silurian and the Late Devonian to Early Carboniferous changed remarkably in topography from the initial low in east and high in west to high in northeast and low in southwest. The major paleogeomorphic elements developed in these periods included the strong eroded uplift high, the uplift marginal slope, the gentle ramp of the depression margin and the depression belt. The sandstones of the lowstand and the early transgressive systems tracts were deposited along the uplift marginal slopes and the gentle ramps of the depressions comprise the prolific reservoirs in the basin. The study indicates that the distribution patterns of the unconformities within the basin are closely related to the paleogeomorphic features and evolu

关键词： palaeostructural geomorphology unconformity distribution patterns central paleouplift belt Tarim Basin

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Late Cenozoic geomorphology, Geochronology and Physiography of Yuntaishan in Southern Taihang Mountain, North China

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Acta Geologica Sinica(English Edition) 2010年第1期84卷 230-239页

作者： WU Zhonghai ZHAO Xitao MA Yinsheng ZHAO Xun ZHAO Ting YANG Shouzheng GAO Linzhi Institute of Geomechanics Chinese Academy of Geological Sciences Beijing 100081 China Institute of Geology and Geophysics Chinese Academy of Sciences Beijing 100029 China Chinese Academy of Geological Sciences Beijing 100037 China Institute of mineral resources Chinese Academy of Geological Sciences Beijing 100037 China The 2nd geological team Henan bureau of geology and mineral resources Jiaozuo 454002 China Institute of Geology Chinese Academy of Geological Sciences Beijing 100037 China

The late Cenozoic geomorphic features and geochronologic data of the Zhingfang River catchment in the Yuntaishan World Geopark are studied. Several quarternary geochronologic methods, including electron spin resonance （ESR）, optically stimulated luminescence （OSL）, thermo-luminescence （TL） and U-series are presented in this paper. The results suggest that there are two planation surfaces, named as the Taihang surface which is a peneplain of Taihang stage formed during Oligocene or Oligocene to early-middle Miocene period, and Tang-hien surface which is a mature wide valley of Tang-hien stage formed during late Miocene-Pliocene or Piiocene-early Pleistocene period and probably ended prior to 2.2-2.6 Ma based on ESR dating. After the Tang-hien stage, the incision and aggradation of the river formed six stream terraces with heights of 3-5 m, 8-12 m, 22-24 m, 28-38 m, 50-62 m and 80-85 m above the river bottom, respectively. The dating results of the alluvium sediments suggest that these terraces were formed during Holocene, 20-23 ka B.P., 110-120 ka B.P., 200-240 ka B.P., 840-1200 ka B.P. or ~450 ka B.P. and 1600-1800 ka B.P. or -1100 ka B.P., respectively. These results indicate that episodic incision of the river, which controls the formation of the scenery in the Yuntaishan World Geopark, was mainly influenced by the periodic dry-wet climate change during late Cenozoic mountain uplift.

关键词： geomorphology geochronology planation surface river terrace late Cenozoic,southern Taihang Mountains North China

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Danxia geomorphology of China: A review

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Chinese Science Bulletin 2001年第S1期46卷 38-45页

作者： PENG HuaDepartment of Geography, Zhongshan University, Guangzhou 510275, China (e-mail: eesph@***) 1. Department of Geography Zhongshan University 510275 Guangzhou China

Danxia Landform belongs to red terrestrial clastic rock landform, which is characterized by its red cliffed scarp. The development of Danxia Landform research in China experienced three historic stages, i.e. initial establishment, taking shape and expanding since the concept 'Danxia Landform' raised by Prof. Chen Guoda in 1939. As a new branch of geomorphology, Danxia geomorphology research is now stepping its ripe stage. In the 1990s, the search enters into an unprecedented grand occasion at the prompting of tourism exploit.

关键词： Danxia Landform Danxia geomorphology red beds terrestrial clastic rock scenery resource.

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Gravity tectonics controls on reservoir-scale sandbodies:Insights from 3D seismic geomorphology of the canyons buried in the upper slope of the Eastern Niger delta basin

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Energy Geoscience 2024年第3期5卷 244-260页

作者： Vivian O.Oguadinma Jean-Yves Reynaud Vincent Delhaye-Prat Tony Akpi Scott Thackrey Ademola Lanisa Massimo Dall’Asta Univ.Lille CNRSUniv.Littoral Côte d'OpaleUMR 8187LOGLaboratoire d'Océanologie et de GéosciencesF 59000 LilleFrance Total Energies E&P Africa-HUB CSTJFAvenue Larribau64000PauFrance

High-resolution 3D seismic data analysis was integrated with a calibrated well and biostratigraphy data to present the first overview of a buried Pleistocene canyon system on the upper slope of the eastern Niger Delta,the Galabor *** maps of specific horizons allow documenting the changing morphologies and infill lithologies of two main branches of the canyon through two stages of activity separated by a reference horizon dated at 0.99 Ma based on well *** the upper slope,growth faults dissect the canyon heads,the catchment of which encroaches a network of valleys incised on the outer *** canyon fill is composed of muddy channels and mass-transport deposits,largely derived from the collapse of canyon walls and sand-rich bodies forming a tract sourced by shelf-edge deltas at the outlet of the incised ***-density turbiditic processes likely control the distribution of sand bodies along the canyon,ranging from tributary fans on the upper slope to 6 km-wide meander belts on the middle *** sandy deposits accumulate in minibasins formed along the canyon path,downstream of the subsiding hanging wall of the growth faults and upstream of shale ridges that damp the flow in the *** results show that canyons can be major targets for sand reservoir exploration on the upper slope of large muddy deltas.

关键词： geomorphology Submarine canyon 3D seismic Fault Shale ridge Reservoir Channel

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Analysis of the geomorphology and Environmental Geological Problems of Huzhou on the Yangtze River Delta

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Acta Geologica Sinica(English Edition) 2004年第3期78卷 808-812页

作者： BANGYuehua WANGJingdong YUANXueyin WANGRunhua ChinaUniversityofGeosciences WuhanHubei430074 NanjingInstituteofGeologyandMineralResources NanjingJiangsu210016

Geomorphically, Huzhou, which is on the Yangtze River delta is characterized mainly by plains, with small hills. This paper presents a detailed analysis of the environmental geological hazards both natural and those incurred by human activities in different morphologic units. The authors point out that most of the regional environmental geological problems in the natural geologic-morphologic conditions, such as crustal stability, foundation of soft soil, soil waterlogging and soil erosion, have insignificant effects to the society, or related countermeasures of prevention and control have been adopted. But environmental geological problems incurred by human being's economic activities become more and more severe, for example, water and soil pollution and land subsidence in plain areas resulting from overexploitation of groundwater, and landslides, karst collapses and water and soil loss etc. caused by quarrying in hilly areas.

关键词： environmental geology geological hazards geomorphology Huzhou Yangtze River delta

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AN APPROACH TO THEORY AND METHODS OF URBAN geomorphology

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Chinese Geographical Science 1996年第1期6卷 89-96页

作者：刁承泰

Urban geomorphology is a new subject,and its theory and practice need approaching and *** paper deals with the utilization and transformation of landforms in the process urbanization,and the evolvement and unique character of an urban geomorphological *** an evaluation about catastroability of the urban geomorphological environment in Chongqing as an example,the author introduces a researching method in the urban geomorphology,including selection and quantification of evaluation parameters,a grid method used in mapping and a mathematical synthesizing method to evaluate on a fixed position.

关键词： urban geomorphology urban geomorphological environment Chongqing City

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