Remote Sensing Study of Sliding Surface of Slopes nearby a Large Tobacco Growing Plantation

Objectives: A study of remote sensing detection of slip surfaces on man-made slopes in a natural environment nearby a large tobacco growing plantation. Based on the GPR method, the image characteristics of potential slip surfaces on slopes are analyzed based on the change in GPR wave amplitude caused by the water content of the slip surface. The large granularity and permeability of the spoil allows natural precipitation to continue to infiltrate into the bedrock, and the infiltrated water gradually erodes the spoil and forms a water-rich rubble layer with the easily soluble rock mass, which develops into a slip zone and threatens the stability of the slope nearby a large tobacco growing plantation. By analyzing the magnitude of the remote sensing images, the process of water content changes in the soft fracture zone at the bedrock interface of the slope can be efficiently and accurately understood. Ensured the safe operation of the planted tobacco plantation.

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Criteria for the optimal selection of remote sensing optical images to map event landslides

Natural Hazards and Earth System Science ◽

10.5194/nhess-18-405-2018 ◽

2018 ◽

Vol 18 (1) ◽

pp. 405-417 ◽

Cited By ~ 27

Author(s):

Federica Fiorucci ◽

Daniele Giordan ◽

Michele Santangelo ◽

Furio Dutto ◽

Mauro Rossi ◽

...

Keyword(s):

Remote Sensing ◽

Land Surface ◽

Central Italy ◽

Morphological Characteristics ◽

Visual Interpretation ◽

Remote Sensing Images ◽

Optical Images ◽

Image Characteristics ◽

Landslide Mapping ◽

Error Index

Abstract. Landslides leave discernible signs on the land surface, most of which can be captured in remote sensing images. Trained geomorphologists analyse remote sensing images and map landslides through heuristic interpretation of photographic and morphological characteristics. Despite a wide use of remote sensing images for landslide mapping, no attempt to evaluate how the image characteristics influence landslide identification and mapping exists. This paper presents an experiment to determine the effects of optical image characteristics, such as spatial resolution, spectral content and image type (monoscopic or stereoscopic), on landslide mapping. We considered eight maps of the same landslide in central Italy: (i) six maps obtained through expert heuristic visual interpretation of remote sensing images, (ii) one map through a reconnaissance field survey, and (iii) one map obtained through a real-time kinematic (RTK) differential global positioning system (dGPS) survey, which served as a benchmark. The eight maps were compared pairwise and to a benchmark. The mismatch between each map pair was quantified by the error index, E. Results show that the map closest to the benchmark delineation of the landslide was obtained using the higher resolution image, where the landslide signature was primarily photographical (in the landslide source and transport area). Conversely, where the landslide signature was mainly morphological (in the landslide deposit) the best mapping result was obtained using the stereoscopic images. Albeit conducted on a single landslide, the experiment results are general, and provide useful information to decide on the optimal imagery for the production of event, seasonal and multi-temporal landslide inventory maps.

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Dynamic Analysis of Land Use / Cover Change in Dangshan County

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.356-360.2874 ◽

2011 ◽

Vol 356-360 ◽

pp. 2874-2879 ◽

Cited By ~ 1

Author(s):

Gang Fang ◽

Juan Yang ◽

Hai Min Su

Keyword(s):

Remote Sensing ◽

Land Use ◽

Remote Sensing Images ◽

Environment Change ◽

Dominant Position ◽

Land Use Conversion ◽

Type Area ◽

The Stability ◽

Stability Type ◽

Landsat Satellite

The paper,mainly using 3 scenery TM remote sensing images of Landsat satellite and 1 scenery ETM+ remote sensing image, carried out monitoring and analyzing of the land use / cover change of Dangshan County, including Dangshan County from 1987 to 2009 a total of 23 years of land use / cover change features, land-use conversion relations between types, and discussed the main reason for change. This provided the theory and basis for the Dangshan County urban environment change research, the urban planning, and the urbanized prospect forecast. Conclusions: With the rapid economic development of Dangshan County, and the level of urbanization constantly improved, Dangshan County land use had changed greatly, from 1987 to 2009, construction land and cultivated land had always been dominant position in the 23 years, the stability type area was 367.38 km2, accounted for 30.79%, the changed area accounted for 69.21%, the changed area ratio to 3.01% per year, the comprehensive land-use dynamic degree was 1.50%.

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Analysis of the Coral Reef Evolution Based on Satellite Remote Sensing Images

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.333-335.1719 ◽

2013 ◽

Vol 333-335 ◽

pp. 1719-1723

Author(s):

Ming Xiao Xie ◽

Yin Cai ◽

Meng Guo Li

Keyword(s):

Remote Sensing ◽

Coral Reef ◽

Coral Reefs ◽

Satellite Remote Sensing ◽

Minimum Distance ◽

Remote Sensing Images ◽

Evolution Characteristics ◽

Biological Environment ◽

The Stability

Based on analysis of the ETM+ and TM remote sensing images of LandSAT satellites, the stability and evolution characteristics of the nearshore coral reefs at Changjiang, China was investigated. The results showed that the maximum distance from the outside edge of the coral reefs to the shoreline is 1.1km, and the corresponding minimum distance is 200m. From 1973 to 2013, the locations of coral reef chain are relatively stable with maximum variation 50m. Generally, the natural tidal currents and waves can not destroy the coral reefs, and the human activities do not change the biological environment of the coastal area. Therefore, the Changjiang coral reefs could keep stable in the long term.

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Potential Slip Surfaces of Slope with Strength Parameters

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.243-249.3315 ◽

2011 ◽

Vol 243-249 ◽

pp. 3315-3318 ◽

Cited By ~ 5

Author(s):

Hang Lin ◽

Ping Cao

Keyword(s):

Shear Strength ◽

Numerical Analysis ◽

Factor Of Safety ◽

Slip Surface ◽

Friction Angle ◽

Shear Strength Parameters ◽

Strength Parameters ◽

Slip Surfaces ◽

Stability Of Slope ◽

The Stability

The cohesion c and friction angle φ are the main strength parameters influencing the stability of slope. Any of them changes, the factor of safety of slope will change, but it has seldom been considered in the literature how the potential slip surface will change at the same time. In the present paper, the analytical deduction and numerical analysis are done to find out the effect of shear strength parameters c and φ to the distribution of potential slip surface. The study shows that, the potential slip surface is affected by the combination of c and φ, whose function is λ=c/(γhtanφ).

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Contribution of multi-temporal remote sensing images to characterize landslide slip surface ‒ Application to the La Clapière landslide (France)

Natural Hazards and Earth System Science ◽

10.5194/nhess-5-425-2005 ◽

2005 ◽

Vol 5 (3) ◽

pp. 425-437 ◽

Cited By ~ 59

Author(s):

B. Casson ◽

C. Delacourt ◽

P. Allemand

Keyword(s):

Remote Sensing ◽

Surface Characterization ◽

Temporal Evolution ◽

Slip Surface ◽

Rotational Behaviour ◽

Remote Sensing Images ◽

Displacement Vectors ◽

Digital Elevation ◽

Multi Temporal

Abstract. Landslide activity is partly controlled by the geometry of the slip surface. This activity is traduced at the surface by displacements and topographic variations. Consequently, multi-temporal remote sensing images can be used in order to characterize the geometry of landslide slip surface and its spatial and temporal evolution. Differential Digital Elevation Models (DEMs) are obtained by subtracting two DEMs of different years. A method of multi-temporal images correlation allows to generate displacement maps that can be interpreted in terms of velocity and direction of movements. These data are then used to characterize qualitatively the geometry of the slip surface of the la Clapière landslide (French Southern Alps). Distribution of displacement vectors and of topographic variations are in accordance with a curved slip surface, characterizing a preferential rotational behaviour of this landslide. On the other hand, a spatial and temporal evolution of the geometry of the slip surface is pointed out. Indeed, a propagation of the slip surface under the Iglière bar, in the W part of the landslide, is suspected and can be linked to the acceleration of the landslide in 1987. This study shows the high potential of multi-temporal remote sensing images for slip surface characterization. Although this method could not replace in situ investigations, it can really help to well distribute geophysical profiles or boreholes on unstable areas.

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Improving the methods to improve the stability of hydrotechnical structures in Yakutia

Melioration and Water Management ◽

10.32962/0235-2524-2019-1-37-39 ◽

2020 ◽

pp. 37-39

Author(s):

M LOSKIN

Keyword(s):

Agricultural Production ◽

Hydraulic Engineering ◽

Process Water ◽

Small Rivers ◽

Limiting Factor ◽

Safe Operation ◽

Central Yakutia ◽

Agricultural Water Supply ◽

Temperature Impact ◽

The Stability

Problems of providing the population and agricultural production by qualitative potable and process water in the Central Yakutia are covered. This territory belongs to the region with acute shortage of water resources which is always a limiting factor of development of agricultural production. For the solution of this burning issue in the 80th years of the last century along the small rivers the systems of hydraulic engineering constructions providing requirements with process water practically of all settlements of the Central Yakutia were constructed. At a construction of all hydraulic engineering buildings the method of construction with preservation of soils of the basis of constructions in a frozen state was applied. When warming the climate which is observed in recent years hydraulic engineering constructions built in regions of a wide spread occurance of breeds of an ice complex and with the considerable volume of water weight, were especially vulnerable. On character and a design they experience continuous threat of damage and demand very attentive relation from the operating organizations. Taking this into account, safe operation of hydraulic engineering constructions in a zone of distribution of permafrost breeds demands new approaches. The article examines features of hydraulic engineering constructions’ operation of agricultural water supply objects in the Central Yakutia. Distinctiveness of hydraulic engineering constructions’ operation is that stability of constructions is intimately bound to temperature impact of a reservoir on ground dams’ body and the basis of constructions. The possibility of inclusion of ways for an intensification of a freezing of constructions in the structure of operational actions is studied. The new method on safe operation of hydraulic engineering constructions as prewinter abatement of the water level in a reservoir accounting volumes and norms of water consumption of the settlement is offered.

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