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rtl算法
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  rtl algorithm
     The retrospective examinations of RTL algorithm in North China have indicated that the anomalies obtained by the improved RTL algorithm show the short or intermediate short term precursory features in most cases.
     华北 5级以上地震的回顾性预测研究结果表明 ,改进的RTL算法所得到的异常大多具有短期或中短期特征 .
短句来源
     According to statistical examination results of RTL algorithm in North China, the methods to distinguish the intermediate and short term anomalies and to estimate the occurrence time of the coming main shock are given in the paper.
     据此给出由RTL算法进行中、短期异常识别并粗略估计发震时间的方法 .
短句来源
     Based on the study results of literature (regarding the Region-Time-Length algorithm and its application in North China), the improved RTL algorithm has been used to do the RTL spatial scanning for 35 moderately strong earthquakes (M_S≥5.0) in North China area.
     基于文献[1]("区域 时间 长度算法")的研究成果,利用改进的RTL算法在较大范围内对华北地区35次震例开展RTL空间扫描研究。
短句来源
     Region-time-length Algorithm(shorted as RTL Algorithm) can be used to estimate the relative changes of the level of seismicity. We apply it to the Yunnan area and analyze 13 M_S≥6.0 earthquakes with relatively complete data of small shocks.
     应用检测地震活动水平相对变化的区域—时间—长度算法(RTL算法),分析研究了云南地区有较完备小震资料的13次6级以上震例。
短句来源
  “rtl算法”译为未确定词的双语例句
     So, RTL method has capability in predicting earthquakes(M_L≥5.0) in this area.
     通过RTL算法对异常进行量化,对以后该区的5级以上地震活动情况具有一定的预报能力。
短句来源
  相似匹配句对
     The algorithm is an extension of the two-valued cover-most algorithm proposed by M. C.
     该算法是M. C.
短句来源
     The algorithm presented in this paper employs Y.
     算法采用Y.
短句来源
     RTL test pattern generation algorithm based on CRG model
     基于CRG模型的RTL测试矢量生成算法
短句来源
     Establishment and Simulation of Neural Processor Slices Algorithmic Level and RTL Level Models with VHDL
     神经元计算芯片的VHDL算法级与RTL级模型的建立及模拟
短句来源
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  rtl algorithm
The Region-Time-Length Algorithm (RTL algorithm) is introduced and improved in the paper.
      
The retrospective examinations of RTL algorithm in North China have indicated that the anomalies obtained by the improved RTL algorithm show the short or intermediate-short term precursory features in most cases.
      
According to statistical examination results of RTL algorithm in North China, the methods to distinguish the intermediate and short-term anomalies and to estimate the occurrence time of the coming main shock are given in the paper.
      
A sketch of the stochastic test for the seismicity anomaly revealed by the RTL algorithm.
      
Thus, the RTL algorithm is an effective tool for revealing seismicity pattern changes before strong earthquakes.
      
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The Region Time Length Algorithm (RTL algorithm) is introduced and improved in the paper. Compared with the original definition, the influence of rupture length on RTL function is emphasized and the weights of epicentral distance function, time function, and rupture length function are ensured to be equal. The retrospective examinations of RTL algorithm in North China have indicated that the anomalies obtained by the improved RTL algorithm show the short or intermediate short term precursory features in most...

The Region Time Length Algorithm (RTL algorithm) is introduced and improved in the paper. Compared with the original definition, the influence of rupture length on RTL function is emphasized and the weights of epicentral distance function, time function, and rupture length function are ensured to be equal. The retrospective examinations of RTL algorithm in North China have indicated that the anomalies obtained by the improved RTL algorithm show the short or intermediate short term precursory features in most cases. There are two types of RTL anomalous patterns before the main shock. For the I type, the variation pattern of the V RTL , numerical values of the V RTL (x, y, z, t) function, is complete and most of them have shown the changing pattern of "rising from 0turningdropping" or "dropping from 0turningrising". For the II type, the variation pattern of V RTL is not complete, which increases or decreases quickly from 0 and there is no evident turning, the main shock generally occurs in the short period around the peak V RTL . The rising of V RTL indicates an increase of seismic activity relative to the background level, which means the enhancement of seismic activity, while the dropping of V RTL indicates the decrease of seismic activity relative to the background level, which represents the seismic quiescence to a certain extent. According to statistical examination results of RTL algorithm in North China, the methods to distinguish the intermediate and short term anomalies and to estimate the occurrence time of the coming main shock are given in the paper. For both I and II type RTL anomalies, the R value, i.e., the forecasting score, is about 0.6 and 0.3 for the 3 months forecasting period and about 0.7 and 0.4 for the 6 months forecasting period. The preliminary discussion is also made for the influences of characteristic time span t 0, characteristic distance r 0, and threshold magnitude M 0 on computation of V RTL , as well as some other significant problems in application.

引入并改进了“区域 时间 长度算法”(region time lengthalgorithm) ,较之原来的定义更加强调了地震破裂尺度函数对VRTL的贡献 ,同时保证了震中距函数、时间函数及破裂尺度函数对VRTL影响的权系数相等 .华北 5级以上地震的回顾性预测研究结果表明 ,改进的RTL算法所得到的异常大多具有短期或中短期特征 .震前VRTL变化型态可分为两类 :Ⅰ类具有相对完整的变化形态 ,大多呈现从 0开始的“上升—转折下降”或“下降—转折上升”形态 ;Ⅱ类变化形态不完整 ,一般从 0开始急剧上升或下降 ,无明显转折 ,主震发生在VRTL极值附近 .VRTL上升表征地震活动水平相对于背景变化率的增高 ,意味着地震活动增强 ;VRTL下降则意味着地震活动相对于背景变化率的降低 ,在一定程度上表征了地震活动的平静 .据此给出由RTL算法进行中、短期异常识别并粗略估计发震时间的方法 .该方法Ⅰ ,Ⅱ类异常 3个月内发震的R值评分分别为 0 .6及 0 .3左右 ,6个月内的R评分分别为 0 .7及 0 .4左右 .对特征时间跨度、特征距离、震级下限等对VRTL的影响 ,以及其它一些...

引入并改进了“区域 时间 长度算法”(region time lengthalgorithm) ,较之原来的定义更加强调了地震破裂尺度函数对VRTL的贡献 ,同时保证了震中距函数、时间函数及破裂尺度函数对VRTL影响的权系数相等 .华北 5级以上地震的回顾性预测研究结果表明 ,改进的RTL算法所得到的异常大多具有短期或中短期特征 .震前VRTL变化型态可分为两类 :Ⅰ类具有相对完整的变化形态 ,大多呈现从 0开始的“上升—转折下降”或“下降—转折上升”形态 ;Ⅱ类变化形态不完整 ,一般从 0开始急剧上升或下降 ,无明显转折 ,主震发生在VRTL极值附近 .VRTL上升表征地震活动水平相对于背景变化率的增高 ,意味着地震活动增强 ;VRTL下降则意味着地震活动相对于背景变化率的降低 ,在一定程度上表征了地震活动的平静 .据此给出由RTL算法进行中、短期异常识别并粗略估计发震时间的方法 .该方法Ⅰ ,Ⅱ类异常 3个月内发震的R值评分分别为 0 .6及 0 .3左右 ,6个月内的R评分分别为 0 .7及 0 .4左右 .对特征时间跨度、特征距离、震级下限等对VRTL的影响 ,以及其它一些实际应用中的重要问题进行了初步讨论 .

Based on the study results of literature (regarding the Region-Time-Length algorithm and its application in North China), the improved RTL algorithm has been used to do the RTL spatial scanning for 35 moderately strong earthquakes (M_S≥5.0) in North China area. The results show that for 24 of 35 earthquake samples, the obvious RTL anomaly appears at the epicentral area, or at the surrounding regions but nearby the mainshock (the distance from anomalous area to mainshock is smaller than 1°, most of them are...

Based on the study results of literature (regarding the Region-Time-Length algorithm and its application in North China), the improved RTL algorithm has been used to do the RTL spatial scanning for 35 moderately strong earthquakes (M_S≥5.0) in North China area. The results show that for 24 of 35 earthquake samples, the obvious RTL anomaly appears at the epicentral area, or at the surrounding regions but nearby the mainshock (the distance from anomalous area to mainshock is smaller than 1°, most of them are smaller than 0.5°) during 3 months before the mainshock. In this case, the potential site of coming mainshock could be roughly judged according the RTL anomaly distribution. For 3 of 35 earthquake samples, the RTL anomaly appears at the epicentral area during the 4~12 months before the mainshock. But during 3 months before the mainshock, the anomaly at the epicentral area disappears and migrates to outside region surrounding the mainshock. For 8 of 35 earthquake samples, there is not any TRL anomaly found in the region surrounding the mainshock during 1 year before the mainshock. In other words, the 3 months short-term RTL anomaly is remarkable for about 69% among total earthquake samples, and the ratio for 1 year moderate and short-term anomaly is about 77%, and no RTL anomaly occurrence within one year accounts for 23% of the total earthquake samples. Our study results also show that, for a few earthquake samples, the obvious RTL anomaly appears at the epicentral area during the 3 months short-term before the mainshock, but in the same time the RTL anomaly also appears in the other regions, this will bring more difficulty for the site judgment of the coming earthquakes. The approximate computing approaches and rough indexes for judgment of RTL anomaly will be given at the end of the paper.

基于文献[1]("区域 时间 长度算法")的研究成果,利用改进的RTL算法在较大范围内对华北地区35次震例开展RTL空间扫描研究。结果显示,24次震例主震前3个月内在覆盖主震的区域、或在主震周围但与之相距较近的区域(两者之间距离小于1°,大多数在0.5°以下),有明显的RTL异常显示,据此可粗略判定未来可能的主震位置。3次震例在震前4~12个月内震中区有RTL异常,但震前3个月内震中区异常消失,异常迁移至主震震中外围。8次震例震前1年内震中附近区域没有RTL异常显示。从比例来看,3个月内有短期RTL异常的震例占69%,1年内有中短期RTL异常显示的占77%,1年内无异常的占23%。研究结果还显示,少数震例在3个月的短期阶段尽管有覆盖未来主震的、较明显的RTL异常,但同时在研究区域内还存在另外的RTL异常区,这给地点判定带来困难。文中最后给出实际工作中应用RTL方法进行地震短期预测的大致计算步骤及粗略的预测指标。

Region-time-length Algorithm(shorted as RTL Algorithm) can be used to estimate the relative changes of the level of seismicity.We apply it to the Yunnan area and analyze 13 M_S≥6.0 earthquakes with relatively complete data of small shocks.The results indicate that V_(RTL) values show obvious intermediate-,short-term anomalies in the source zones or nearby about 100-km-radius range in one year before the events,and mainly the seismic activity strengthening anomalies,up to 77 %.

应用检测地震活动水平相对变化的区域—时间—长度算法(RTL算法),分析研究了云南地区有较完备小震资料的13次6级以上震例。结果表明,该区6级以上地震发生前在源区或近源区大约100 km半径的空间尺度内,VRTL值能检测到明显的1年以内时间尺度的中短期地震活动异常,它主要是以表征地震活动增强的“上升型”异常为主,占77%。

 
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