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Possible thermal brightness temperature anomalies associated with the Lushan(China) M_s7.0 earthquake on 20 April 2013

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Earthquake Science 2015年第1期28卷 37-47页

作者： Tao Xie weiyu ma Research Institute of Petroleum Exploration and Development Petro China China Earthquake Networks Center

Lushan Ms7.0 earthquake occurred in Lushan county, Ya＇an city, Sichuan province of China, on 20 April 2013, and caused 196 deaths, 23 people of missing and more than 12 thousand of people injured. In order to analyze the possible seismic brightness temperature anomalies which may be associated with Lushan earthquake, daily brightness temperature data for the period from 1 June 2011 to 31 may 2013 and the geographical extent of 25°E-35°N latitude and 98°E-108°E longitude are collected from Chinese geostationary meteorological satellite FY-2E. Continuous wavelet transform method which has good resolution both in time and frequency domains is used to analyze power spectrum of brightness temperature data. The results show that the rela- tive wavelet power spectrum （RWPS） anomalies appeared since 24 January 2013 and still lasted on 19 April. Anomalies firstly appeared at the middle part of Longmenshan fault zone and gradually spread toward the southwestern part of Longmenshan fault. Anomalies also appeared along the Xianshuihe fault since about 1 march. Eventually, anomalies gathered at the intersection zone of Longmenshan and Xianshuihe faults. The anomalous areas and RWPS ampli- tude increased since the appearance of anomalies and reached maximum in late march. Anomalies attenuated with the earthquake approaching. And eventually the earthquake occurred at the southeastern edge of anomalous areas. Lushah earthquake was the only obvious geological event within the anomalous area during the time period, so the anomalous changes of RWPS are possibly associated with the earthquake.

关键词： Lushan earthquake Brightness temperatureThermal anomaly Wavelet transform Sichuan province

The Change in Outgoing Long-wave Radiation before the Ludian Ms6.5 Earthquake Based on Tidal Force Niche Cycles

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Earthquake Research in China 2017年第3期31卷 422-430页

作者： Zhang Yan Kang Chunli ma weiyu Yao Qi China Earthquake Networks Center Beijing 100045China

The cycle process of the tidal force niche for the Ludian M_S6.5 earthquake occurring in Ludian County, Yunnan Province, China on August 3, 2014 was calculated. The earthquake occurred near the middle point phase. It indicates that the type of seismogenic fault that the tide force acted on belongs to the thrust fault. According to the tidal niche cycle,the abnormal OLR( Outgoing Long-wave Radiation) change was analyzed based on NOAA satellite data around the whole land area of China before and after the *** result shows that the OLR changed evidently with tide force change. Temporally,the change went through the evolution process of initial OLR rise → strengthening → abnormal peaking → attenuation → returning to normal; and spatially,the abnormal area wound its way along the Zhaotong-Ludian fault and went through a scattered → conversion →scattered process. This process is similar to the change process of rock breaking under stress loading. The results indicate that the tidal force of a celestial body could trigger an earthquake when the tectonic stress reaches its critical breaking point and the OLR anomaly is proportional to the seismic tectonic stress change. It is of great use to combine OLR and tidal force in earthquake precursory observation.

关键词： The tidal force niche Thermal infrared OLR The Ludian Ms6.5 earthquake NOAA satellite

A carbon-rich g-C_(3)N_(4) with promoted charge separation for highly efficient photocatalytic degradation of amoxicillin

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Chinese Chemical Letters 2021年第9期32卷 2787-2791页

作者： Dan Huang Xianbo Sun Yongdi Liu Haodong Ji Wen Liu Chong-Chen Wang weiyu ma Zhengqing Cai National Engineering Laboratory for High-concentration Refractory Organic Wastewater Treatment Technologies East China University of Science and TechnologyShanghai 200237China The Key Laboratory of Water and Sediment Sciences Ministry of EducationCollege of Environmental Sciences and EngineeringPeking UniversityBeijing 100871China Beijing Key Laboratory of Functional materials for Building Structure and Environment Remediation School of Environment and Energy EngineeringBeijing University of Civil Engineering and ArchitectureBeijing 100044China

A novel carbon-rich g-C_(3)N_(4) nanosheets with large surface area was prepared by facile thermal polymerization method using urea and 1,3,*** of carbon-rich functional groups were introduced into the surface layers of g-C_(3)N_(4),which constructed the built-in electric field(BIEF)and resulted in improved charge separation;therefore,the carbon-rich g-C_(3)N_(4) displayed superior photocatalytic activity for amoxicillin degradation under solar *** contaminant degradation mechanism was proposed based on radical quenching experiments,intermediates analysis and density functional theory(DFT)***,the reusing experiments showed the high stability of the material,and the amoxicillin degradation under various water matrix parameters indicated its high applicability on pollutants treatment,all of which demonstrated its high engineering application potentials.

关键词： Carbon-rich g-C_(3)N_(4) Photocatalysis Built-in electron field Charge separation

Research on the Changes of Celestial Tide-generating Force and the Outgoing Long-wave Radiation before the Lushan (China) M_S7.0 Earthquake

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Earthquake Research in China 2015年第3期29卷 404-411页

作者： Shi Haixia ma weiyu Lu Xian Monika Joshi China Earthquake Networks Center University of Ulster

Calculation of tidal changes reveals that the MS 7. 0 Lushan County,Sichuan,China,earthquake of April 20,2013 occurred at the minimum phase point of tidal force. It indicates that the seismogenic fault on which the tidal force acts on is of thrust type. The outgoing long-wave radiation( OLR) is the energy radiating from the Earth as infrared radiation at low energy to space. According to the tidal cycle,abnormal OLR change is analyzed based on NOAA satellite data around the whole of China before and after the earthquake. The result shows that the OLR changed evidently with the tide force ***,the change went through the course: initial OLR rise → s trengthening →reaching abnormal peak → a ttenuation → r eturning to normal; in space,the abnormal area was distributed along the Longmenshan fault and evolved as: scattering→ c onvergent→ s cattering. The process is similar to the change process of rock breaking under stress loading. It indicates that the celestial tidal force can trigger earthquakes when the tectonic stress reaches the critical break point of an active fault and the OLR anomaly is proportional to the seismic tectonic stress change. It is of practical value to combine OLR and tidal force anomaly with earthquake precursor studies.

关键词：射出长波辐射潮汐变化地震前兆芦山县中国电力应力作用 OLR

Comparative study on the deviation characteristics of post-earthquake intensity evaluation based on two intensity attenuation relationship models

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Earthquake Research Advances 2021年第2期1卷 16-25页

作者： Jing Ren Zhiqiang Li Shuaitang Huang Zhuantiao Tan Yahui Chen Qi Yao weiyu ma China Earthquake Networks Center Beijing100045China Earthquake Agency of Xinjiang Uygur Autonomous Region Urumqi830011China Institute of Earthquake Forecasting China Earthquake AdministrationBeijing100036China

We collect the isoseismal data of 488 earthquakes in western China and 182 earthquakes in eastern China after *** least square method is used to establish two models of the seismic intensity attenuation relationship partitions in China,based on the major and minor axis ellipse models,and the area and the major axis radius,*** two models are applied to the calculation of the intensity circle of the earthquake events with a magnitude M_(S)≥5.0 from 2008 to 2019,and the actual intensity is compared with the model intensity value as an indicator to verify the consistency between the actual intensity and the value from the empirical statistical *** real earthquake results are selected to calculate the major and minor axis and area of the ellipse using the two intensity attenuation relationship *** comparison,we summarize the deviation characteristics of the intensity value,and put forward corresponding improvement suggestions.

关键词： Seismic intensity attenuation Deviation characteristics Disaster assessment

Possible Thermal Brightness Temperature Anomalies Associated with the Yutian (China) M_S7.3 Earthquake on February 12,2014

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Earthquake Research in China 2015年第3期29卷 341-351页

作者： Xie Tao Zheng Xiaodong Kang Chunli ma weiyu Lu Jun Research Institute of Petroleum Exploration and Development PetroChina China Earthquake Networks Center

In order to analyze the seismic brightness temperature anomalies associated with the Yutian earthquake which occurred at Yutian County, Xinjiang on February 12,2014, daily brightness temperature data was collected from the China Geostationary Meteorological Satellite FY-2E,for the period from may 1,2012 to April 30,2014 and the geographical extent of 30°- 45°N latitude and 70°- 95°E longitude. The continuous wavelet transform method was used to analyze the relative wavelet power spectrum( RWPS) of brightness temperature data for each pixel. And the RWPS time-spatial evolution within the analysis area was obtained. The results showed that the anomaly started to appear at the vicinity of epicentre since October 2013, and anomalous areas gradually enlarged and stretched towards to Altun fault zone and the eastern part of West Kunlun fault zone. Anomalies began to appear at fault zones at Middle Tianshan Mountains, Southern Tianshan Mountains and the western part of the West Kunlun Mountains area which is located at the western margin of Tarim basin,since November 2013. Then anomalous area further enlarged and gathered along fault zones,and eventually,anomalous belts were developed along fault zones around the Tarim basin. The anomaly area and amplitude reached their maximum in late December 2013 and early January 2014. With the impending earthquake,the anomaly area and amplitude dwindled. Anomalies at the vicinity of epicentre disappeared days before the occurrence of the main shock. However, the anomaly at Altun and Middle Tianshan areas still remained. After the main shock,the anomaly attenuated quickly and the whole anomaly disappeared in late February 2014.

关键词：温度异常地震震中亮度中国阿尔金断裂带塔里木盆地静止气象卫星温度数据

Multi-parameters of Thermal Infrared Remote Sensing Anomalies of the Earthquake

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Earthquake Research in China 2016年第4期30卷 500-512页

作者： Lu Xian Meng Qingyan Gu Xingfa Zhang Xiaodong Xiong Pan ma weiyu Xie Tao China Earthquake Networks Center China Earthquake Administration Institute of Remote Sensing and Digital Earth China Academy of Sciences Institute of Earthquake Science China Earthquake Administration

Temporal and spatial anomalies associated with the Yushu earthquake, including the Outgoing Longwave Radiation( OLR), the Land Surface Temperature( LST) and surface temperature from the National Center for Environmental Prediction( NCEP) are studied using thermal infrared remote sensing data in this paper. All results confirmed the previous observations of thermal anomalies in the seismic region prior to this *** the multi-parameter anomalies, the underground water temperature anomaly appeared first and lasted for the longest time; OLR anomaly,an infrared parameter which indicates the radiation characteristics of the land surface medium,was the first to be detected; LST anomalies appeared later than OLR. NCEP temperature indicates the average atmosphere temperature with a certain vertical thickness; therefore,it was the last detected anomaly. The anomalies of OLR and LST lasted for a similar time length and were all located in the south or southwest of the epicenter.

关键词：遥感异常地震区热红外地表温度 NCEP 持续时间温度异常 OLR

The Analysis of Celestial Tectonics-generating Force’s Inducing Effect to the M7.3 Japan Earthquake on 9th, march 2011

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The Analysis of Celestial Tectonics-generating Force’s Indu...

2011 3rd International Conference on Environmental Science and Information Application Technology(ESIAT 2011)

作者： Zhou Bo Liu Xuejun ma weiyu Key Laboratory of Virtual Geographic Environment Ministry of Education Nanjing Normal University China University of Mining & Technology

The paper studies the relationship between the earthquake and spatio-temporal changes of the addictive tectonics stress caused by the celestial tide-generating force（ATSCTF） about the M7.3 earthquake of Japan at 38.5oN, 142.8oE, and extracts the abnormal temperature increment before and after the earthquake by using the National Centers for Environmental Prediction（NCEP） data according to the ATSCTF’s time cycle. The analysis reveals that the time when the ATSCTF’s absolute value on P-axis and N-axis reached peak is same to the time of the earthquake’s occurrence, the abnormal temperature increment before the earthquake is obvious and the area of abnormal temperature increment mostly locates to the east of the epicenter, the minimum values’ spatial distribution of the ATSCTF on P-axis and N-axis mostly focused to the east of epicenter on the day earthquake occurred, at the same time, the unbalanced spatial distribution was similar to the abnormal temperature increment distribution, this phenomena testifies the ATSCTF’s inducing effect to the earthquake’s occurrence from another perspective.

关键词： astro-tidal-triggering abnormal temperature increment imminent earthquake

来源： cnki会议评论

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印度尼西亚大地震前后的地温变化研究

地震地磁观测与研究 2022年第S1期43卷 138-139页

作者：卢显马未宇中国地震台网中心北京100045

1研究背景对于地面温度LST(Land Surface Temperature)与地震之间的关系已取得诸多研究结果。如:马未宇等(2018)利用NCEP(National Center for Environmental Prediction)的地温数据,计算出江西九江地震前后不同层温度的变化,探索天体... 详细信息

1研究背景对于地面温度LST(Land Surface Temperature)与地震之间的关系已取得诸多研究结果。如:马未宇等(2018)利用NCEP(National Center for Environmental Prediction)的地温数据,计算出江西九江地震前后不同层温度的变化,探索天体引潮力附加构造应力(ATSCTF)与地震之间的关系,结果显示地震可能是地温变化的一个原因,而不是一个简单的天气变化,并且地温升高与ATSCTF变化同步波动;陈顺云等(2018)通过潜埋钻孔监测不同深度的岩床温度,探索地壳应力变化,重点研究了康定M_(S) 6.3地震的同震响应,结果显示,基岩温度变化与地震发生具有同步性。本文拟在上述工作基础上,以2018年印度尼西亚大地震为例,研究大地震发生前后地温变化的过程。

关键词：大地震地温变化卫星云图