Shiyong Yan
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View article: The 2025 <i>M</i> <sub> <i>W</i> </sub> 7.0 Dingri Earthquake: Conjugate Normal Faulting of a Graben Structure in the Southern Xainza‐Dinggye Rift
The 2025 <i>M</i> <sub> <i>W</i> </sub> 7.0 Dingri Earthquake: Conjugate Normal Faulting of a Graben Structure in the Southern Xainza‐Dinggye Rift Open
The 2025 7.0 Dingri earthquake, which struck southern Tibet on 7 January 2025, provides kinematic insights into extensional tectonics in the region. We use Sentinel‐1 and Lutan‐1 Synthetic Aperture Radar (SAR) data sets to analyze the cose…
View article: Monitoring and Spatiotemporal Evolution Characteristics Analysis of Sudden Subsidence in Tianjin Balitai with Multi-Band Spaceborne SAR
Monitoring and Spatiotemporal Evolution Characteristics Analysis of Sudden Subsidence in Tianjin Balitai with Multi-Band Spaceborne SAR Open
View article: Monitoring and risk analysis of surface subsidence in the Jiaozuo Goaf along the middle route of the South-to-North Water Diversion Project based on the DS-InSAR method
Monitoring and risk analysis of surface subsidence in the Jiaozuo Goaf along the middle route of the South-to-North Water Diversion Project based on the DS-InSAR method Open
南水北调中线工程是优化水资源配置和促进区域协调发展的国家战略性工程,为及时发现和评估沿线煤炭开采沉陷对南水北调中线干渠的威胁,本文基于Sentinel-1A数据和分布式散射体合成孔径雷达干涉测量(DS-InSAR)技术,通过同质像元识别和相位优化将分布式目标融入时序InSAR处理,获取了焦作采空区2019年—2020年地表形变时空分布,在此基础上结合形变和距离要素构建了一种南水北调沿线形变风险评估指标,并依据指标实现了研究区形变风险分级。结果显示,焦作采空区内存在多个沉降盆…
View article: Inversion of Reservoir Parameters for Oil Extraction Based on Deformation Monitoring With InSAR
Inversion of Reservoir Parameters for Oil Extraction Based on Deformation Monitoring With InSAR Open
Frequent water injection and oil extraction can potentially lead to changes in reservoir pressure, burst or collapse of casings, and corresponding variations on the ground surface. Attention should be focused on developing the strategies t…
View article: DS-InSAR phase optimization based on singular value decomposition
DS-InSAR phase optimization based on singular value decomposition Open
高质量监测点空间密度是时序InSAR开展形变监测的重要指标,依靠分布式散射体DS(Distributed Scatters)开展InSAR形变监测可有效解决传统时序InSAR监测点空间密度不够的缺陷,但分布式散射体干涉相位极易受到去相干影响,造成干涉相位失真,因此分布式散射体相位优化是DS-InSAR技术的关键,针对这一情况,本文提出一种新的基于奇异值分解的DS相位优化方法,该方法利用同质像元时序相位重构相位矩阵,对矩阵进行主成分分析得到优化相位。采用模拟数据和33景覆盖郑…
View article: A dataset of surge-type glaciers in the High Mountain Asia based on elevation change and satellite imagery
A dataset of surge-type glaciers in the High Mountain Asia based on elevation change and satellite imagery Open
View article: DS-InSAR Based Long-Term Deformation Pattern Analysis in the Mining Region With an Improved Phase Optimization Algorithm
DS-InSAR Based Long-Term Deformation Pattern Analysis in the Mining Region With an Improved Phase Optimization Algorithm Open
The environment management and land utilization of the abandoned mining region is critically dependent on precise monitoring and comprehensive understanding of mining subsidence. In order to overcome the shortcomings of the traditional dis…
View article: Polarimetric Persistent Scatterer Interferometry for Ground Deformation Monitoring with VV-VH Sentinel-1 Data
Polarimetric Persistent Scatterer Interferometry for Ground Deformation Monitoring with VV-VH Sentinel-1 Data Open
With the launch of the Sentinel-1 satellites, it becomes easy to obtain long time-series dual-pol (i.e., VV and VH channels) SAR images over most areas of the world. By combining the information from both VV and VH channels, the polarimetr…
View article: Dual-polarization Sentinel-1 data polarization time series InSAR technology surface deformation monitoring—Taking shanghai pudong airport as an example
Dual-polarization Sentinel-1 data polarization time series InSAR technology surface deformation monitoring—Taking shanghai pudong airport as an example Open
ä¸åæåçåæåå¾é·è¾¾SARï¼Synthetic Aperture Radarï¼æ°æ®å¯¹å°ç©å ·æä¸åååºï¼å©ç¨æåä¿¡æ¯å¯æåInSARçå°è¡¨å½¢åçæµè½åãé对å©ç¨å è´¹Sentinel-1æ°æ®çåæåä¿¡æ¯è¿è¡å°è¡¨å½¢åçæµ…
View article: Geohazards Monitoring and Assessment Using Multi-Source Earth Observation Techniques
Geohazards Monitoring and Assessment Using Multi-Source Earth Observation Techniques Open
Geological disasters are responsible for the loss of human lives and for significant economic and financial damage every year. Considering that these disasters may occur anywhere—both in remote and/or in highly populated areas—and anytime,…
View article: Accuracy assessment and scale effect investigation of UAV thermography for underground coal fire surface temperature monitoring
Accuracy assessment and scale effect investigation of UAV thermography for underground coal fire surface temperature monitoring Open
Coal fire is a worldwide disaster that wastes massive energy and seriously pollutes the environment. Accurate acquisition of abnormal LST (land surface temperature) caused by underground coal fire is essential for coal fire monitoring and …
View article: The South Inylchek Glacier Activity Analysis over a Ten-year Interval in Surface Velocity with Multi-source Spaceborne Imagery
The South Inylchek Glacier Activity Analysis over a Ten-year Interval in Surface Velocity with Multi-source Spaceborne Imagery Open
Ice movement is one of the most important characteristics in describing mountain glacier activity, which is a sensitive natural indicator of climate change. However, the short-term ice movement with a single data source could not precisely…
View article: Underground Coal Fire Detection and Monitoring Based on Landsat-8 and Sentinel-1 Data Sets in Miquan Fire Area, XinJiang
Underground Coal Fire Detection and Monitoring Based on Landsat-8 and Sentinel-1 Data Sets in Miquan Fire Area, XinJiang Open
Underground coal fires have become a worldwide disaster, which brings serious environmental pollution and massive energy waste. Xinjiang is one of the regions that is seriously affected by the underground coal fires. After years of extingu…
View article: Investigation of deformation patterns by DS-InSAR in a coal resource-exhausted region with spaceborne SAR imagery
Investigation of deformation patterns by DS-InSAR in a coal resource-exhausted region with spaceborne SAR imagery Open
Along with the impact of energy structure adjustment as well as the coal resource exhaustion in the old mining region, the deformation over the abandoned mine region has severely restricted both the reuse of abandoned lands and the sustain…
View article: Examining geodetic glacier mass balance in the eastern Pamir transition zone
Examining geodetic glacier mass balance in the eastern Pamir transition zone Open
Glaciers in the eastern Pamir have reportedly been gaining mass during recent decades, even though glaciers in most other regions in High Mountain Asia have been in recession. Questions still remain about whether the trend is strengthening…
View article: Distinguishing Glaciers between Surging and Advancing by Remote Sensing: A Case Study in the Eastern Karakoram
Distinguishing Glaciers between Surging and Advancing by Remote Sensing: A Case Study in the Eastern Karakoram Open
The Karakoram has had an overall slight positive glacier mass balance since the end of 20th century, which is anomalous given that most other regions in High Mountain Asia have had negative changes. A large number of advancing, retreating,…
View article: Wave Structure Interaction Computation and Experiment Roadmap Part 1: A Report on the 1st CCP-WSI Focus Group Workshop
Wave Structure Interaction Computation and Experiment Roadmap Part 1: A Report on the 1st CCP-WSI Focus Group Workshop Open
View article: Evolution of Surge-Type Glaciers in the Yangtze River Headwater Using Multi-Source Remote Sensing Data
Evolution of Surge-Type Glaciers in the Yangtze River Headwater Using Multi-Source Remote Sensing Data Open
A surge-type glacier is a special and dangerous type of glacier, which can advance quickly in a short-time with cycles. Glaciers in the Yangtze River headwater are generally acknowledged to be in a stable state. However, not all of those g…
View article: Influence of inlet gas volume fraction on performance of a gas-liquid centrifugal pump
Influence of inlet gas volume fraction on performance of a gas-liquid centrifugal pump Open
In order to study the influence of inlet gas volume fraction on performance of a gas-liquid centrifugal pump, the CFD commercial software ANSYS CFX 16.0 was used to solve the three-dimensional turbulent flow field in a gas-liquid two-phase…
View article: Landslide movement monitoring with ALOS-2 SAR data
Landslide movement monitoring with ALOS-2 SAR data Open
Landslide is a hazard that threaten the people who lives in the mountain area, it comes active especially rainy seasons and causes a large number of casualties every year. The movement of the slope is an indicator of activity of the landsl…
View article: Characterizing the behaviour of surge- and non-surge-type glaciers in the Kingata Mountains, eastern Pamir, from 1999 to 2016
Characterizing the behaviour of surge- and non-surge-type glaciers in the Kingata Mountains, eastern Pamir, from 1999 to 2016 Open
Glaciers in the Pamir Mountains are generally acknowledged to be in a stable state and show the least glacial retreat in high-mountain Asia; however, they are also some of the most dynamic glaciers in the region and their behaviour has bee…
View article: Underground Coal Fires Identification and Monitoring Using Time-Series InSAR With Persistent and Distributed Scatterers: A Case Study of Miquan Coal Fire Zone in Xinjiang, China
Underground Coal Fires Identification and Monitoring Using Time-Series InSAR With Persistent and Distributed Scatterers: A Case Study of Miquan Coal Fire Zone in Xinjiang, China Open
The Xinjiang is an important coal production base in China and also a serious coal fire disaster area. Coal fires not only waste resources, but also cause air pollution and damage to the ecological environment. Hence, it is very important …
View article: Superpixel Segmentation of Polarimetric Synthetic Aperture Radar (SAR) Images Based on Generalized Mean Shift
Superpixel Segmentation of Polarimetric Synthetic Aperture Radar (SAR) Images Based on Generalized Mean Shift Open
The mean shift algorithm has been shown to perform well in optical image segmentation. However, the conventional mean shift algorithm performs poorly if it is directly used with Synthetic Aperture Radar (SAR) images due to the large dynami…
View article: Numerical analysis of the double suction centrifugal pump with different tongue shape
Numerical analysis of the double suction centrifugal pump with different tongue shape Open
The paper deals with the influence of the tongue shape on the flow characteristics at the near-tongue region of the volute in the double suction centrifugal pump with long-tongue, middle-tongue and short-tongue respectively. For this study…
View article: Numerical calculation and analysis of gas-liquid two-phase flow in a centrifugal multiphase pump for deep-sea mining
Numerical calculation and analysis of gas-liquid two-phase flow in a centrifugal multiphase pump for deep-sea mining Open
With the development of offshore oilfield, the gas-liquid centrifugal multiphase pump (CMP) has become the focus of research for its more effective way of working and economic benefits. In order to transport two-phase media, the internal f…
View article: STUDY ON LAND SUBSIDENCE INCANGZHOU AREA BASEDON SENTINEL-1A/BDATA
STUDY ON LAND SUBSIDENCE INCANGZHOU AREA BASEDON SENTINEL-1A/BDATA Open
This paper, obtaining 39scenesof images of the Sentinel-1 A/B, monitored the Cangzhou area subsidence from Mar. 2015 to Dec. 2016 basing on using PS-InSAR technique. The annual average subsidence rate and accumulative subsidence were obtai…
View article: Wavelet-Based Topographic Effect Compensation in Accurate Mountain Glacier Velocity Extraction: A Case Study of the Muztagh Ata Region, Eastern Pamir
Wavelet-Based Topographic Effect Compensation in Accurate Mountain Glacier Velocity Extraction: A Case Study of the Muztagh Ata Region, Eastern Pamir Open
Glaciers in high mountain regions play an important role in global climate research. Glacier motion, which is the main characteristic of glacier activity, has attracted much interest and has been widely studied, because an accurate ice mot…
View article: Revealing the surge behaviour of the Yangtze River headwater glacier during 1989–2015 with TanDEM-X and Landsat images
Revealing the surge behaviour of the Yangtze River headwater glacier during 1989–2015 with TanDEM-X and Landsat images Open
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View article: A Study on Distance Transport of PM2.5 to Xianlin in Nanjing, China and its Source Areas
A Study on Distance Transport of PM2.5 to Xianlin in Nanjing, China and its Source Areas Open
With rapid economic development in China, the concentration of particulate matters emitted into the atmosphere has become increasingly higher. As an important city in the Yangtze River delta, Nanjing City in China has a high PM2.5 concentr…
View article: An Improved Adaptive Template Size Pixel-Tracking Method for Monitoring Large-Gradient Mining Subsidence
An Improved Adaptive Template Size Pixel-Tracking Method for Monitoring Large-Gradient Mining Subsidence Open
The monitoring of large-gradient deformation caused by coal mining is of great significance to the prevention and management of disasters in mining areas. The interferometric synthetic aperture radar (InSAR) method captures the small-gradi…