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地电阻率观测在地震前兆观测中具有重要的地位,大量的观测资料表明,多数中强地震前地电阻率出现了异常变化,而快速地发现、甄别地电阻率的变化是地震前兆信息还是干扰,高效率地做好地电阻率资料日常处理工作是前提。由此,依据地电阻率理论和有关规定,基于V isualC＋＋6.0平台,开发了一款关于ZDSB或ZD8B I地电仪产出的地电阻率资料日常处理软件,旨在介绍本软件算法的理论原理、设计思路及实现方法,并结合陇南中心地震台地电阻率观测资料给出了相应的应用实例。应用表明,研发的该软件可以将地电阻率资料日常处理工作系统化,将日常处理工作中大量繁杂的手工操作自动化,能及时地对资料的异常变化做出初步判定,快速地为地震预测部门提供依据。 相似文献
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荣成地震台形变观测干扰分析 总被引：1，自引：0，他引：1
《高原地震》2015,(2)
对荣成地震台2套形变仪运行以来影响观测质量的干扰因素进行了总结分析,得出影响观测资料的自然因素主要有感应雷击、降雨影响及气压影响;观测系统因素主要有数采故障、电压影响;人为因素主要有仪器标定和仪器调零。通过对干扰、故障因素的分析,为日常工作中观测人员及时发现地震前兆异常提供参考依据。 相似文献
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从自然环境、人为因素、观测技术系统和地球物理事件等方面总结长沙井水位在日常观测中可能遇到的干扰因素,分析不同干扰因素对长沙井水位观测数据产生的影响,归纳其干扰特征.结果表明,长沙井水位受到的自然环境干扰主要有气压、降雨和雷电等;人为干扰主要包括更换仪器、井房改造、清理排水管路和调节气氡进水量等;观测系统干扰主要为排水管堵塞和供电故障;地球物理事件干扰主要为同震响应.不同干扰因素引起的干扰特征各不相同.本次研究不仅能够提高对非地震前兆异常的识别能力,同时还能够促进对地震前兆异常信息的有效提取. 相似文献
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漳州地震台SSY型伸缩仪资料干扰因素分析 总被引：1，自引：1，他引：0
通过对漳州地震台SSY型伸缩仪观测资料的分析,总结日常观测过程中可能遇到的多种干扰因素.从自然、外界环境、人为干扰、仪器自身等干扰因素的典型表现,加深对非地震前兆因素干扰的识别,以便更好地排除此类干扰,提高仪器观测资料的质量. 相似文献
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通过对永安地震台TJ-Ⅱ型钻孔体应变仪观测资料分析,总结日常观测可能遇到的多种干扰因素.从自然、仪器自身、人为干扰、外界环境等干扰因素的典型表现,加深对非地震前兆的干扰识别,以便更好地排除干扰,提高仪器观测资料质量. 相似文献
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《地震地磁观测与研究》2016,(6)
对漳州地震台SS-Y型伸缩仪日常观测资料中出现的多种短时畸变,利用Matlab软件进行谱分析和滤波处理,总结各种干扰表现形式,以便更好识别非地震前兆因素干扰,为地震研究服务。 相似文献
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薛志芳 《地震地磁观测与研究》2006,27(6):73-79
主要介绍FHD-1型质子核旋磁力仪无补偿电流输出;RS-232C总线隔离驱动器(光隔副侧)引起的数据通信时好时坏;水位、地热数据不能调收;气氡、氦仪器无故障死机等故障的检修方法,对有关的电路及故障原因进行分析,并以实例对这些故障的检修进行了总结,提出了检修方法、步骤及改进措施。 相似文献
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对拜城地震台数据传输链路出现的现象、原因及网络故障,进行了检查和分析处理,为台站资料的连续、可靠提供保障。 相似文献
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《国际泥沙研究》2016,(3):220-225
The cantilever failure is one of the typical bank failures, in which the lateral caving erosion at the bottom of the bank plays an important role. When the caving erosion width is larger than a certain value, the cantilever failures such as shear, toppling and stress failures may occur. In order to understand the condition of the cantilever failure, the collapse mechanisms of the cantilever failures are studied based on the bank stability theory and flume experiment. According to the bank stability equation with the lateral erosion, the critical caving erosion width (CCEW) formulas for the shear and toppling failures of simple slope bank were derived in this paper. The formulas show that the CCEW increases as the overhanging soil thickness and soil cohesion increase, and decreases as the crack depth on the bank surface and the slope angle of the bank increase. And these formulas were tested with experimental data, which shows the predicted values are good agreement with experimental data. The paper reveals a quantitative expression on the process of the river cantilever failure. 相似文献
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阿克苏中心地震台数字地震观测系统常见故障及处理方法 总被引：1，自引：0，他引：1
论述了阿克苏中心地震台数字地震观测系统的组成部分及各部分的功能和作用,对日常观测中常见的各种故障进行了总结、分析,并对仪器运行中典型故障的产生原因、解决方法进行了详细地分析. 相似文献
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Emmanuel J. Gabet 《地球表面变化过程与地形》2003,28(12):1341-1348
The creation of a hydrophobic layer in the soil during ?res in semi‐arid environments inhibits the in?ltration of rainfall. This leads to increased rates of runoff and associated sediment transport. When the hydrophobic layer is deposited beneath the soil surface, a perched water table develops which may cause thin (1–2 cm) hillslope failures that are distinguishable from features caused by rilling and sheet?ow. Evidence for these failures was observed after a ?re near Santa Barbara, California. The amount of sediment eroded from some hillslopes was substantial, with 290 kg of sediment per metre width of hillslope delivered to the valley ?oor. The mechanics of these failures are examined with a numerical model that incorporates a stability analysis with subsurface ?ow routing along a typical hillslope pro?le. The model correctly predicts the location of the failures as well as the rainfall amount necessary to trigger them. Copyright © 2003 John Wiley & Sons, Ltd. 相似文献
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Field evidence of seismites in Quaternary deposits of the Jijel (Eastern Algeria) coastal region 总被引：2，自引：0，他引：2
A. Benhamouche A. Nedjari Y. Bouhadad D. Machane E. Oubaiche N. Sidi Said 《Journal of Seismology》2014,18(2):289-299
Jijel has been hit by a strong earthquake in 1856 that triggered a destructive tsunami. Field geological investigations show that the marine terrace deposits (Tyrrhenian or likely Eutyrrhenian) exhibit several types of soft sediment deformation features including sismoslumps, thixotropic bowls, thixotropic wedges, and diapir-like structures. In addition, paleo-liquefaction features represented by neptunian and injection dikes have been observed in the sand dune deposits (Aterian or Würm). Furthermore, typical paleo-earthquake-induced ground failures including lateral spreading, paleo-landslides, and sand volcanoes have been observed in recent, likely, Holocene deposits. Such features, remarkably comparable to present-day earthquake-induced ground failures showing clearly repetitive occurrence of past events may constitute a precious material for future paleo-seismic investigation. The various features have been interpreted herein as seismites associated to strong earthquakes produced likely by the potentially active faults previously identified in the area. 相似文献
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Estimation of the seismic assessment of residential and public buildings based on the data on the earthquake of August 27, 2008 in South Baikal 总被引：1，自引：0，他引：1
The intensity of the earthquake of August 27, 2008 registered 7–8 points on the MSK-64 scale at its epicenter. It was the
strongest earthquake in the Pribaikalie in the last 50 years. The main causes of damage in buildings were the considerable
depreciation of their construction and the low quality of the construction. The most typical macroseismic characteristics
were the failures of brick chimneys and of ovens in one- and two-story wooden buildings. 相似文献