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Quantitativestudyoncharacteristicparametersofacousticbehaviorhabitsinbudgerigars(Melopsittacusundulafus)Jin-ChangJIANG(蒋锦昌);H... 相似文献
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本文对都江堰地震台2类电磁波仪的震前记录进行分析,震前仪器记录到了电磁波异常现象:2006年6月21日甘肃文县5.0级、2006年7月22日和2006年8月25日云南盐津2次5.1级地震,这些说明电磁波监测在地震短临预报中有参考意义。 相似文献
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On the bases of the studies of acoustic behavior and pattern recognition of budgerigar calls, the quantitative study on characteristic
parameters of acoustic behavior habits in budgerigars is further given in this paper. These results open up a new knowledge
for comprehensive analyses of abnormalities of acoustic behavior habits in budgerigars prior to earthquakes. Under indoor
lighting, the song calls in budgerigars are possessed of the beginning and ending singing time with the natural characteristics,
and of the rhythmic habit of daylight singings and night rests. In daily daylight and night calls, single calls, vari-toned
calls, mono-syllabic and multi-syllabic protest calls are respectively possessed of the occupation habit corresponding to
behavior activities, and have close acrophases and regular following properties corresponding to half-value phases, and the
acrophases delay half-value phases by about half an hour on an average. After reversing lighting, the acrophases of budgerigar
calls delay those of the normal lighting by about 12 hours on an average, and the following properties corresponding to half-value
phases are irregular.
This subject is supported by the Chinese Joint Seismological Science Foundation. 相似文献
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概述了青岛市地震前兆观测系统,结合1992年以来青岛周边地区发生的4次Ms≥5.0地震分析了前兆观测的映震能力,以期对青岛市地震监测预报提供参考。 相似文献
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使用时间序列分析和相关分析方法,分析华北北部地区1970~2006年地震与太阳黑子、耀斑的相关性,得到的结论是,太阳活动与以中小地震为主的地震样本不存在统计关系。这个结论与以往的研究不同,本文对此做了初步分析。 相似文献
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对新疆1970~2002年的地震资料根据不同范围不同震级进行全时空扫描,认为新疆台网监测能力较好地区在绝大多数6级以上地震前,地震活动关联图较为清晰。提出了预警地震的概念,认为预警地震在短临预报方面有一定的前景。 相似文献
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Kiyoo Mogi 《Pure and Applied Geophysics》1988,126(2-4):447-463
Before the 1944 Tonankai earthquake along the Nankai Trough, seismic activity increased in the shallow depths, and then the activity gradually migrated downwards. When it reached its limit (a depth of approximatelty 70 km), the main shock occurred. Several deep earthquakes, including one ofM5.3, occurred several months prior to the Tonankai earthquake. A similar downward migration pattern also can be recognized regarding the 1952 Tokachi-oki earthquake. In this case the deepest earthquakes reached about 400 km. This may be one of the intermediate-term precursory phenomena of great thrusttype earthquakes in subduction zones. Recent observations in the Tokai district along the Suruga Trough, where a large earthquake is expected to occur in the future, suggest a similar downward migration pattern in the land area. 相似文献
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蒲江川-11井始建于1982年,是四川省重要的水位观测井,位于蒲江—新津—成都—德阳隐伏断裂和大兴隐伏断裂附近,近年来,该井观测环境优良,干扰小,是一口理想的水位观测井。自1982年投入观测以来,对川西地区的地震预测发挥了较好作用,特别是2002年以来,观测到了一些有益的突跳异常,并较好地对应了300 km内的4.5级以上地震。本文对川-11井异常进行了初步分析。 相似文献
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慢地震慢前兆的机制研究 总被引:12,自引:1,他引:12
通过岩石高温高压破裂实验与有机玻璃破裂试验的应力—应变曲线对比、地震波形记录(观测资料)与试样破裂波形(实验资料)对比、地震前后定点应变与主破裂前后应变形态变化的对比,认为慢地震是临界或亚临界破裂或预先滑动所致,是低频应变波动。它是材料屈服、弱化或塑性变化的必然结果。而慢前兆则是临近大地震(大破裂)前出现的诸如形变、低频地震波(破裂弹性波)等的短期及临震前兆现象,它比较可靠。但由于许多岩石主破裂前并无明显的临界破裂或预滑动现象,也并非所有岩石都一定出现明显屈服,所以也并非每个地震前都有慢地震,因此,也就不一定都出现低频波动。从而,也并不一定都出现相同的短期、临震前兆现象。 相似文献
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Formation cause of thermal infrared high temperature belt along Honghe fault and its relation to earthquakes 总被引:3,自引:0,他引:3
Introduction The relation between satellite thermal infrared anomaly and earthquakes or fault activities has been studied for more than ten years. Many researchers contribute themselves to the research field and made some progress (Gorny et al, 1988; Andrew et al, 2002; WANG and QIANG, 1995; ZHENG et al, 1996; QIANG and DIAN, 1998). In recent years, with the rapid development of satellite remote sensing technique and its wide application to the field of seismology, more and more rese… 相似文献
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Effectsofmining-inducedearthquakesonwatertableindeepwellsYong-TatCHE;Zhi-Feng;You-PeiWANG;Jin-ZiYU;Ji-GangHUANGandQiWANG(车用太,... 相似文献
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长白山近代火山活动与地震 总被引:5,自引:0,他引:5
概述了长白山火山区的构造环境及其构造的活动性,以天池火山为主体的长白山火山区近代喷发的构造的活动,表现有继承与新生的构造双重性和不均衡的脉动性,区内的火山地震与区域性构造地震趋于同步活动。 相似文献
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Introduction Earthquakes are direct results from tectonic deformation and crustal movements, which usu- ally contain abundant information of crustal stress status and medium property in the deep lithosphere. Seismic activities might reflect accumulation and concentration of crustal stress in the seismogenic process. And different mechanisms of rock ruptures lead to different precursory phe- nomena prior to earthquakes (ZHANG, et al, 2001). Therefore, seismic activities before a strong earthq… 相似文献
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本文从2008年中国汶川、2011年日本东北部巨震出发,论述我国地震预测,尤其是对应用实践中涉及的技术问题和需要重视的管理问题。 相似文献
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The geomagnetic data recorded by Kashi and Jinghai observatories in China were analyzed with improved polarization method. We compared the result around 0.01 Hz which is thought to be useful to detect the ULF anomaly with the result around 0.1 Hz which was inferred from the earthquake depth according to the skin effect, and found that 0.1 Hz is more proper to detect the ULF anomaly for both earthquakes studied in this paper. 相似文献