Results 41 to 50 of about 2,022 (230)

High Resolution Remote Sensing Monitoring and Analysis of Coral Reef Degradation Caused by Outbreaks of Biological Natural Enemies: A Case Study of the Taiping Island in the South China Sea

Redai dili, 2023
The global proliferation of natural predators, including Terpios hoshinota sponge and crown-of-thorns starfish, poses a significant threat to the ecological vitality of coral reefs.
Zheng Jinhui, Ren Guangbo, Hu Yabin, Zhang Feifei, Ma Yi, Li Mingjie, Wang Ruifu   +6 more
doaj   +1 more source

Geomorphometry-Automatic Landform Classification

Journal of Geography, 2018
In the past, landforms were represented in physiographic and morphometric maps by hand drawing. With developments in digital elevation models (DEM), geographic information systems (GIS) and image analyses, automatic extraction of landforms from morphological parameters and data storage in databases is now possible and are actively utilized in various ...
openaire   +4 more sources

Constructing Soil–Landscape Units Based on Slope Position and Land Use to Improve Soil Prediction Accuracy

Remote Sensing
Topography is one of the dominant factors in regional soil formation and development. Soil distribution has a certain pattern from high to low in space, and this pattern has a high degree of consistency with slope position.
Changda Zhu, Fubin Zhu, Cheng Li, Wenhao Lu, Zihan Fang, Zhaofu Li, Jianjun Pan   +6 more
doaj   +1 more source

GEOGRAPHICAL INFORMATION ANALYSIS OF TSUNAMI FLOODED AREA BY THE GREAT EAST JAPAN EARTHQUAKE USING MOBILE MAPPING SYSTEM [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2012
The great earthquake occurred in Tohoku District, Japan on 11th March, 2011. This earthquake is named "the 2011 off the Pacific coast of Tohoku Earthquake", and the damage by this earthquake is named "the Great East Japan Earthquake".
M. Koarai, T. Okatani, T. Nakano, T. Nakamura, M. Hasegawa   +4 more
doaj   +1 more source

Research progress and prospect of karst geomorphology in China based on digital elevation model

Carsologica Sinica, 2022
Digital elevation model (DEM) contains rich morphological information because the process of digital terrain modeling and extracting a series of terrain parameters based on DEM data with various spatial resolutions, known as Digital Terrain Analysis (DTA)
Benteng BI, Chen YANG, Jingwen LI, Jianwu JIANG, Lixin ZHOU   +4 more
doaj   +1 more source

Investigation of the Dynamic Evolution Mechanism of Bed Separation in Karst Aquifers and Risk Assessment of Water Inrush

Energy Science &Engineering, EarlyView.
This study reveals the temporal and spatial evolution law of roof separation under the karst aquifer and the dynamic water inrush mechanism of roof separation. The FAHP–EWM–CRITIC combination weighting method was established to obtain the risk zoning of bed separation water inrush in a karst landform mining area. ABSTRACT Coalfields in northern Guizhou
Xilong Zhu, Lulin Zheng, Bo Li, Weide Ren, Xiong Liu, Ximin Zhou   +5 more
wiley   +1 more source

A transformer-based landform mapping method combining topographic knowledge and digital elevation data

International Journal of Applied Earth Observations and Geoinformation
Deep learning (DL) methods have emerged as potential tools for automated landform mapping. However, current approaches frequently overlook critical topographic features and prior topographic knowledge, which are essential for accurate landform ...
Hongen Wang, Liyang Xiong, Haoyu Cao, Fei Zhao, Fengyize Yu, Hong Wei, Guoan Tang, Stuart N. Lane   +7 more
doaj   +1 more source

Error Characteristics of Pan-Arctic Digital Elevation Models and Elevation Derivatives in Northern Sweden

Remote Sensing, 2021
Many biochemical processes and dynamics are strongly controlled by terrain topography, making digital elevation models (DEM) a fundamental dataset for a range of applications. This study investigates the quality of four pan-Arctic DEMs (Arctic DEM, ASTER
Martin Karlson, David Bastviken, Heather Reese   +2 more
doaj   +1 more source

Exploring Electrical Resistivity Tomography (ERT) to Detect Soil Pipes: Theoretical Modeling and Field Experiments

Land Degradation &Development, EarlyView.
ABSTRACT Soil erosion research remains critical for sustainable development as it impacts soil health through different erosive processes. Recent studies on soil piping highlight advancements in detecting surface features (using UAV); however, detecting underground pipes still remains challenging.
Anita Bernatek‐Jakiel, Marta Kondracka
wiley   +1 more source

MORFOLOGI DAN KLASIFIKASI TANAH PADA BERBAGAI MACAM SUB-LANDFORM KARST DI FORMASI WONOSARI KECAMATAN GEDANGAN, KABUPATEN MALANG

JTSL (Jurnal Tanah dan Sumberdaya Lahan), 2019
Limestone materials in Wonosari formation produces karst landform through the karstification processes. The different type of karst landform can affect soil morphology and soil classification.
Andre E S Sitinjak, Mochtar Lutfi Rayes, Christanti Agustina   +2 more
doaj   +1 more source