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Seismic Activity and Seismic Cone Tectonics on the West Coast of the United States
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作者 Lijun Chen 《Journal of Geoscience and Environment Protection》 2019年第11期92-112,共21页
In the west coast of the United States, there are frequent strong earthquakes and volcanic activities in the crust, high accuracy of the earthquake catalogue, so it is the best choice to study prediction of strong ear... In the west coast of the United States, there are frequent strong earthquakes and volcanic activities in the crust, high accuracy of the earthquake catalogue, so it is the best choice to study prediction of strong earthquakes and volcanoes, and there are two different types of seismic cone tectonics, volcanic type and intracrustal strong seismicity type, so it becomes the epitome of global earthquake prediction research, rarer. In this paper, according to the data of ANSS earthquake catalogue in the United States, using the Seismo-Geothermic Theory and its methods, the images were processed such as the planar distribution images and the three-dimensional images of the general earthquakes, subcrustal earthquakes, intracrustal strong earthquakes and volcanic eruption and the sequence diagrams of subcrustal earthquakes in the study area, as well as theory explanation of their relations with the San Andreas Fault. According to this idea, the volcanic origin and precursory information of U01 mini seismic cone tectonic were firstly studied, then the causes of intracrustal strong seismicity of U02 mini seismic cone tectonic and their migration rules were studied. The precursory information of M7.1 earthquake on July 6, 2019, was analyzed and summarized in U02 mini seismic cone tectonic, and a basic method for handling similar events in the future was given. In this paper, it thinks strong earthquake and volcanic disaster are from deep mantle heat energy, rather than the result of the independence movement of surface structure. Therefore, it finds the most natural energy of causes of seismicity and volcanic activity and opens a new direction for the prediction research of earthquakes and volcanoes. 展开更多
关键词 Seismo-Geothermic Theory (Seismo-Geothermics) Mini seismic CONE Tectonic intracrustal Strong EARTHQUAKE Subcrustal EARTHQUAKE VOLCANO
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Study on the Seismogenic Mechanism of the Earthquake Mw6.9 in 2014 in the Aegean Sea Seismic Cone 被引量:4
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作者 Lijun Chen 《International Journal of Geosciences》 2016年第5期669-684,共16页
In accordance with the Seismo-Geothermics theory about methods of intracrustal strong earthquake and volcano prediction, we use the ANSS earthquake catalogue from the Northern California earthquake data center and the... In accordance with the Seismo-Geothermics theory about methods of intracrustal strong earthquake and volcano prediction, we use the ANSS earthquake catalogue from the Northern California earthquake data center and the EMSC earthquake catalogue from the European-Mediterranean Seismological Centre to study the seismic activities of the Turkish Branch Seismic Cone in the Mediterranean Seismic Cone and the following Aegean Sea Seismic Cone, and show reproduction through graphics and animation, the seismogenic process and seismogenic mechanism of the earthquake Mw6.9 on May 24,2014 innorthern Aegean Sea. It was concluded that the energy of strong earthquake of magnitude around7 inAegean Seawas probably from energy transfer and accumulation in deep mantle and incentive lithosphere in the way of wave pattern, and then the strong earthquake occurs suddenly in search of the weak parts of the surface structure. The purpose of this paper is to open a hole in the traditional seismic genesis, and it is beneficial to the further research on the theory and method of earthquake prediction. It is our first attempt to study this case and it needs further examination. In this paper, we divide the Turkish Branch Seismic Cone of the Mediterranean Seismic Cone into 4 tertiary seismic cones, and we show a preliminary seismo-tectonic model of Aegean region. It will be conducive to seismic monitoring and earthquake prediction research inGreece,Turkey,RomaniaandPolandregions. At present, the world’s earthquake prediction has little effect, and it even tends to be not cognitive. Innovative thinking is the only way out. 展开更多
关键词 Seismo-Geothermics Theory seismic Cone Turkey Aegean Sea Subcrustal Earthquake intracrustal Strong Earthquake Seismogenic Mechanism
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沈阳台利用sPn震相确定近震深度的对比分析 被引量:5
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作者 荆涛 《防灾减灾学报》 2015年第4期49-55,共7页
通过沈阳台记录到20个壳内近震和26个营海岫地区近震,利用s Pn与Pn震相的到时差重新计算这46个近震的震源深度,并和国家台网中心结果及辽宁台网中心结果进行比对,表明沈阳台记录到的s Pn震相可用于计算震源深度,计算得出的深度与国家台... 通过沈阳台记录到20个壳内近震和26个营海岫地区近震,利用s Pn与Pn震相的到时差重新计算这46个近震的震源深度,并和国家台网中心结果及辽宁台网中心结果进行比对,表明沈阳台记录到的s Pn震相可用于计算震源深度,计算得出的深度与国家台网中心及辽宁台网中心所测定深度基本相近,误差较小。 展开更多
关键词 SPN震相 壳内地震 到时差 震源深度 震相识别
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部分熔融强化了青藏高原地壳的各向异性? 被引量:10
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作者 杨彧 陈建业 +2 位作者 杨晓松 闫小兵 张国苓 《地震地质》 EI CSCD 北大核心 2010年第1期59-69,共11页
深部岩石的弹性波各向异性是人们了解地壳深部构造特征,分析其成因,探讨其动力学意义的重要岩石物理参数。实验结果表明由矿物晶格定向分布(LPO)所引起的地壳岩石平均各向异性强度通常不超过5%,远不足以解释在青藏高原地壳中所观测到的... 深部岩石的弹性波各向异性是人们了解地壳深部构造特征,分析其成因,探讨其动力学意义的重要岩石物理参数。实验结果表明由矿物晶格定向分布(LPO)所引起的地壳岩石平均各向异性强度通常不超过5%,远不足以解释在青藏高原地壳中所观测到的弹性波各向异性之强度。模拟结果显示,熔体的定向分布(MPO)能够引起强烈的弹性波各向异性。例如,当熔体的形态因子(α)值介于0.1~0.5之间,熔融程度为5%~10%时,由定向分布的酸性熔体囊所产生的各向异性强度可以达到2%~10%(P波)、2.2~40%(S波)。众多研究资料显示,青藏高原—川滇西部具有加厚的中、上地壳和高地热梯度,低度部分熔融作用在其深部地壳中广泛存在。低度熔体在构造应力作用下的定向分布可能是造成该地区深部地壳存在异常强的各向异性层的重要原因。这暗示目前在青藏高原—川滇西部探测到的异常强的区域性各向异性层是具有部分熔融成因的强烈构造变形带。该构造变形带具有潜在的"解耦"功能,并作为地壳浅部刚性层(块体)的底界协调着块体与其下伏地壳或岩石圈地幔的差异运动。 展开更多
关键词 部分熔融 弹性波各向异性 熔体定向分布(MPO) 壳内解耦带 青藏高原
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Method Research of Earthquake Prediction and Volcano Prediction in Italy
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作者 Lijun Chen Xiaofeng Chen Lei Shao 《International Journal of Geosciences》 2015年第9期963-971,共9页
This paper adopts the earthquake catalogue of the European Mediterranean Seismological Centre (EMSC), in accordance with the principles of Seismo-Geothermics Theory and the concept of seismic cone;it discusses the int... This paper adopts the earthquake catalogue of the European Mediterranean Seismological Centre (EMSC), in accordance with the principles of Seismo-Geothermics Theory and the concept of seismic cone;it discusses the integrity of the earthquake catalogue and the overview of Mediterranean seismic cones;it focuses on the structural details and structural feature of the Italian branch of the Mediterranean seismic cone;it deduces the precursory process of subcrustal earthquake activities before two earthquakes magnitude over 6 and the eruptions of Etna volcano since 2005;then it summarizes the prediction working method of Seismo-Geothermics on estimating the general shell strength, the general period, and the rough location of future earthquake or volcano activities;and finally it discusses and explains some possible problems. The principle and working process of this method were testified in card No. 0419 in 2012, the author’s prediction card, which can apply to predict for intracrustal strong earthquakes and volcano activities within the global twenty four seismic cones. The purpose of this paper is to develop the tools and methods of the prediction of future earthquake and volcano. 展开更多
关键词 Seismo-Geothermics Theory seismic CONE intracrustal Strong Earthquake VOLCANO PREDICTION ITALY
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