Results 11 to 20 of about 49,642 (218)

Assessing the Probability of Drought Severity in a Homogeneous Region

open access: yesComplexity, 2022
The standardized precipitation index (SPI) is one of the most widely used indices for characterizing and monitoring drought in various regions. SPI's applicability has regional and time-scale constraints when it observes in several homogeneous climatic ...
Rizwan Niaz   +5 more
doaj   +1 more source

DESIGN AND CONSTRUCTION OF A KNOWLEDGE SERVICE SYSTEM FOR GLOBAL LAND COVER SPATIOTEMPORAL CHANGE [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2023
Global land cover (GLC) change reflect the distribution and evolution process of various material types on the earth's surface. It is an important basic data for global natural resources survey and ecological environment research.
Y. Wan   +6 more
doaj   +1 more source

Spatiotemporal of ecosystem service values response to land use/cover change based on geo-informatic Tupu – A case study in Tianjin, China

open access: yesEcological Indicators, 2023
Revealing the spatiotemporal evolution of ecosystem service value (ESV) is a prerequisite for regional ecosystem management. This paper integrates the Geo-informatic Tupu method, the Markov transfer model, and the Barycenter model to propose an ...
Haixiao Long   +3 more
doaj   +1 more source

Spatiotemporal multifractal characteristics of electromagnetic radiation in response to deep coal rock bursts [PDF]

open access: yesNatural Hazards and Earth System Sciences, 2014
Dynamic collapses of deeply mined coal rocks are severe threats to miners; in order to predict collapses more accurately using electromagnetic radiation (EMR), we investigate the spatiotemporal multifractal characteristics and formation mechanism of EMR ...
S. Hu, E. Wang, X. Liu
doaj   +1 more source

Representing the Spatiotemporal State Evolution of Geographic Entities as a Multi-Level Graph

open access: yesISPRS International Journal of Geo-Information
The geographic knowledge graph offers a structured framework for mining and discovering spatiotemporal knowledge, which is of great significance for understanding geographic dynamics.
Feng Yuan   +4 more
doaj   +1 more source

Non-Stationary Dynamic Mode Decomposition

open access: yesIEEE Access, 2023
Many physical processes display complex high-dimensional time-varying behavior, from global weather patterns to brain activity. An outstanding challenge is to express high dimensional data in terms of a dynamical model that reveals their spatiotemporal ...
John Ferre   +4 more
doaj   +1 more source

Construction and Updating Technology for a Spatiotemporal Evolution Knowledge Graph of Geographic Entities: Using National Fundamental Geographic Entity Data in China as Study Case [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences
A geographic entity is an abstract representation of a real-world geographic object or phenomenon, characterized by its location, extent, processes, interrelationships, and attributes.
S. Zhao   +8 more
doaj   +1 more source

Integrating Geodetector and GTWR to Unveil Spatiotemporal Heterogeneity in China’s Agricultural Carbon Emissions Under the Dual Carbon Goals

open access: yesAgriculture
Against the backdrop of intensifying global climate change and deepening sustainable development goals, the low-carbon transformation of agriculture, as a major greenhouse gas emission source, holds significant strategic importance for achieving China’s “
Huae Dang   +11 more
doaj   +1 more source

A Spatiotemporal Sequence Prediction Framework Based on Mask Reconstruction: Application to Short-Duration Precipitation Radar Echoes

open access: yesRemote Sensing
Short-term precipitation forecasting is a core task in meteorological science, aiming to achieve accurate predictions by modeling the spatiotemporal evolution of radar echo sequences, thereby supporting meteorological services and disaster warning ...
Zhi Yang   +3 more
doaj   +1 more source

Spatiotemporal evolution of microbial-induced calcium carbonate precipitation based on microfluidics

open access: yesYantu gongcheng xuebao, 2021
The microbial-induced calcium carbonate precipitation (MICP) is a hot research topic in recent years, however, the understanding of its spatiotemporal evolution is still insufficient. This paper aims to investigate the spatiotemporal evolution process by
HE Xiang 1, 2, LIU Han-long 1, 2, 3, HAN Fei 4, MA Guo-liang 1, 2, ZHAO Chang 1, 2, CHU Jian 5, XIAO Yang 1, 2, 3
doaj   +1 more source

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