机械工程学报

Researchers developmethod to assess damage from natural disasters

Liu Wenhao, (Translator)

2018, (2): 1-1. doi: 10.3969/j.issn.0253-4975.2018.02.001

[Abstract](140) [FullText HTML] (74)

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Recent alert level of Agung volcano(Bali, Indonesia)

Wang Jialong, Zhang Jinkui, Zou Ying

2018, (2): 2-8. doi: 10.3969/j.issn.0253-4975.2018.02.002

[Abstract](486) [FullText HTML] (302)

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Indonesia’s island chain is the most active “fire chain” in the Southwest Pacific, and the number of inhabitants in this volcanic area is the highest in the world. The Agung volcano is one of the most active volcanoes in this “fire chain”. The eruption recurrence period of Agung volcano is about 50 years and its last eruption was in 1963 AD （55 years ago）. From August 2017, volcanic earthquakes occurred more frequently which indicates the resumption of eruption. In September, the volcano alert level rose to level Ⅲ. In October, the ash plume began to rise. In November, ash plume rose rapidly to 4 kilometers and the magma began to become active. The alert level rose to the highest level （Level Ⅳ）. This article collects and analyzes the local real-time monitoring data of the Agung volcano, and shows the monitor status, deformation, geochemistry and remote sensing images of volcanic earthquakes since the Agung volcano became activity.

Application of earthquake emergency communication technology in detection of deep crustal structure in the west of Taiwan Strait

Zhang Shujun, Wang Huishan, Xiao Jian, Zheng Chao, Zhou Shiwen

2018, (2): 26-31. doi: 10.3969/j.issn.0253-4975.2018.02.004

[Abstract](156) [FullText HTML] (116)

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The technical personnel of Fujian Earthquake Agency have built the maritime information and communication system based on the maritime satellite communication link. The system is divided into two parts: first, the seismic source ship communication system, including satellite communication equipment, network equipment, video camera equipment; second, the OBS ship communication system with the main goal to achieve the audio and video communication. The establishment of the above system realized the real-time transmission of video, image and data between land and sea, and ensured the smooth implementation of“deep structure exploration project of the western crust of Taiwan strait”.

Study on the crustal and upper mantle velocity structure beneath the northern section of the south-north seismic zone using surface wave imaging method based on dense array

Li Na

2018, (2): 41-42. doi: 10.3969/j.issn.0253-4975.2018.02.008

[Abstract](126) [FullText HTML] (108)

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Research of the Coulomb stress changes and earthquake mechanisms on the reservoir zones

Luo Jun

2018, (2): 43-44. doi: 10.3969/j.issn.0253-4975.2018.02.009

[Abstract](139) [FullText HTML] (56)

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Research on airgun source data processing and propagation characteristics

Jiang Shengmiao

2018, (2): 45-46. doi: 10.3969/j.issn.0253-4975.2018.02.011

[Abstract](96) [FullText HTML] (77)

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The uncertainty factors research of near-field ground motion numerical simulation

Li Zongchao

2018, (2): 47-48. doi: 10.3969/j.issn.0253-4975.2018.02.012

[Abstract](134) [FullText HTML] (71)

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Review of explosive yield estimation

Kong Handong, Wang Tingting

2018, (2): 9-25. doi: 10.3969/j.issn.0253-4975.2018.02.003

[Abstract](330) [FullText HTML] (140)

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Yield estimation of explosions using seismic methods is always a difficult problem in seismology. There are many factors that can affect the result of yield estimation such as source characteristics, depth of burial, propagation path, attenuation, variation of the crustal structure and so on. An accurate yield estimation needs a suitable relationship which is always empirical and must solve the problems mentioned above. Yield is directly related to the power released by the events that somewhat can be expressed with magnitude. Magnitude-yield estimation relationship is commonly used in yield estimation including body-wave magnitude, surface-wave magnitude and coda wave magnitude, each has its advantages and disadvantages. The main purpose of the paper is to summarize the existing yield estimation relationships and make a simple analysis on interference factors. We focus on the description of underground nuclear explosions’ yield and summarize the information of North Korea underground nuclear explosions.

Review of 2017 CTBT Science and Technology Conference

, Wang Xiaoming, Fan Yuanqing

2018, (2): 32-36. doi: 10.3969/j.issn.0253-4975.2018.02.005AAAAAA

[Abstract](192) [FullText HTML] (118)

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Review of 2017 CTBT Science and Technology Conference

, Wang Xiaoming, Fan Yuanqing

2018, (2): 32-36. doi: 10.3969/j.issn.0253-4975.2018.02.005

[Abstract](307) [FullText HTML] (202)

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A brief introduction of the “Computational Simulation” Session in the 2018 Annual Meeting of the Pacific Earthquake Engineering Research Center of the United States

Lu Xinzheng

2018, (2): 37-39. doi: 10.3969/j.issn.0253-4975.2018.02.006

[Abstract](175) [FullText HTML] (104)

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Study on the crustal stress field and the focal fault parameter of large earthquake of North China Plain block

Wang Xiaoshan

2018, (2): 40-41. doi: 10.3969/j.issn.0253-4975.2018.02.007

[Abstract](172) [FullText HTML] (112)

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