The geophysical mechanism behind astronomical time-latitude residuals （ATLR） are discussed. The photoelectric astrolabe at Yunnan Observatory （YO） observed apparent synchronous anomalous ATLR before the Wenchuan M...The geophysical mechanism behind astronomical time-latitude residuals （ATLR） are discussed. The photoelectric astrolabe at Yunnan Observatory （YO） observed apparent synchronous anomalous ATLR before the Wenchuan M8.0 earthquake （EQ） in May 12, 2008 and the Lushan M7.0 EQ n April 20, 2013. We compared the ATLR from the YO photoelectric astrolabe and EQ data since 1976. Anomalous ATLR was observed before several strong EQs in the Yunnan Province. We believe the photoelectric astrolabe can be used to predict strong EQs and the anomalous ATLR are a potential EQ precursor.展开更多
In this paper,the features of medium-term anomalies for strong earthquakes and the criteria for the prediction of such earthquakes are discussed,as well as the feasibility of applying the anomalies of astronomical tim...In this paper,the features of medium-term anomalies for strong earthquakes and the criteria for the prediction of such earthquakes are discussed,as well as the feasibility of applying the anomalies of astronomical time-latitude residuals to earthquake prediction and their limitation when applied to imminent-term prediction.The criteria used to identify the anomalies of time-latitude residuals for M≥6.0 earthquakes in Yunnan Province and for M≥7.0 earthquakes around Yunnan are also discussed.The last strong earthquake in the data used for testing passed the whole process of earthquake prediction practice.In addition,some special features of the case in which anomalies appeared but no strong earthquake followed are also discussed.展开更多
The phenomenon that the short-term anomalies appear in the astronomical time-latitude residuals before a strong earthquake was discovered by some scientific researchers of the Beijing Astronomical Observatory 20 years...The phenomenon that the short-term anomalies appear in the astronomical time-latitude residuals before a strong earthquake was discovered by some scientific researchers of the Beijing Astronomical Observatory 20 years ago. Since then the展开更多
This paper introduces the discovery of the phenomenon that short-term anomalous fluctuations appeared in residuals of astronomical time and latitude observations before earthquakes and the progress of related research...This paper introduces the discovery of the phenomenon that short-term anomalous fluctuations appeared in residuals of astronomical time and latitude observations before earthquakes and the progress of related researches carried out for many years.The relations between the anomalous variations of time and latitude residuals of astronomical time and latitude instruments in different regions and the earthquakes around these instruments as well as the characteristics of residuals' anomalous variations are analyzed.The significance of the anomalous fluctuations in residuals of astronomical time and latitude caused by the anomalous variations of the local plumb line before earthquake and detecting the vertical variation with astronomical time and latitude observations as well as the importance of carrying out further researches are discoursed.The possibility that the phenomenon will become an effective short-term earthquakes precursor,the current situations and the problems to be solved,are discussed.Also we offer the proposals to develop new roboticized astrometric instruments with high-precision and set up test observation networks in earthquake-prone areas in order to do research in-depth,optimize methods of observing and extracting anomalous information for short-term earthquake prediction,and so on.展开更多
基金supported by the Ministry of Science and Technology of P.R.China(No.2012BAK19B01-07)
文摘The geophysical mechanism behind astronomical time-latitude residuals （ATLR） are discussed. The photoelectric astrolabe at Yunnan Observatory （YO） observed apparent synchronous anomalous ATLR before the Wenchuan M8.0 earthquake （EQ） in May 12, 2008 and the Lushan M7.0 EQ n April 20, 2013. We compared the ATLR from the YO photoelectric astrolabe and EQ data since 1976. Anomalous ATLR was observed before several strong EQs in the Yunnan Province. We believe the photoelectric astrolabe can be used to predict strong EQs and the anomalous ATLR are a potential EQ precursor.
文摘In this paper,the features of medium-term anomalies for strong earthquakes and the criteria for the prediction of such earthquakes are discussed,as well as the feasibility of applying the anomalies of astronomical time-latitude residuals to earthquake prediction and their limitation when applied to imminent-term prediction.The criteria used to identify the anomalies of time-latitude residuals for M≥6.0 earthquakes in Yunnan Province and for M≥7.0 earthquakes around Yunnan are also discussed.The last strong earthquake in the data used for testing passed the whole process of earthquake prediction practice.In addition,some special features of the case in which anomalies appeared but no strong earthquake followed are also discussed.
文摘The phenomenon that the short-term anomalies appear in the astronomical time-latitude residuals before a strong earthquake was discovered by some scientific researchers of the Beijing Astronomical Observatory 20 years ago. Since then the
文摘This paper introduces the discovery of the phenomenon that short-term anomalous fluctuations appeared in residuals of astronomical time and latitude observations before earthquakes and the progress of related researches carried out for many years.The relations between the anomalous variations of time and latitude residuals of astronomical time and latitude instruments in different regions and the earthquakes around these instruments as well as the characteristics of residuals' anomalous variations are analyzed.The significance of the anomalous fluctuations in residuals of astronomical time and latitude caused by the anomalous variations of the local plumb line before earthquake and detecting the vertical variation with astronomical time and latitude observations as well as the importance of carrying out further researches are discoursed.The possibility that the phenomenon will become an effective short-term earthquakes precursor,the current situations and the problems to be solved,are discussed.Also we offer the proposals to develop new roboticized astrometric instruments with high-precision and set up test observation networks in earthquake-prone areas in order to do research in-depth,optimize methods of observing and extracting anomalous information for short-term earthquake prediction,and so on.
