Through calculating and analyzing of GPS continuous observation data and mobile gravity data,the study results from the data are as follows.( 1) The different movement rate of the fault ends provides conditions for st...Through calculating and analyzing of GPS continuous observation data and mobile gravity data,the study results from the data are as follows.( 1) The different movement rate of the fault ends provides conditions for stress accumulation.( 2) The high value zone of gravity anomaly appeared in the monitoring area before the earthquake,and gravity variation contour lines are parallel to the strike of fault; and the process of enhancingweakening-enhancing appeared in the regional gravity field before earthquake.展开更多
By systematically analyzing the data of gravity reiteration in the Hexi region and taking a dynamic viewpoint, we have studied the evolution characters of gravity field during the preparation-occurrence of the Jingtai...By systematically analyzing the data of gravity reiteration in the Hexi region and taking a dynamic viewpoint, we have studied the evolution characters of gravity field during the preparation-occurrence of the Jingtai M S5.9 earthquake of June 6, 2000. The patterns of dynamic change of the gravity field clearly reflected how the gravity field evolved from the quasi-homogeneous state to non-homogeneous state for earthquake preparation and then the earthquake occurred. Besides, we have also studied the relation between the characteristic gravity change and strong earthquake activity.展开更多
We propose a novel scheme for synchronous optical sampling based on multicast parametric process. The linearly chirped and time-broadened pulses are utilized to replace the traditional mode-locked sampling pulses. An ...We propose a novel scheme for synchronous optical sampling based on multicast parametric process. The linearly chirped and time-broadened pulses are utilized to replace the traditional mode-locked sampling pulses. An optical sampling rate of 80 Gbit/s is realized by using only one sampling source with repetition rate of 10 GHz.展开更多
基金funded by the Xinjiang Earthquake Science Foundation,China(201211)
文摘Through calculating and analyzing of GPS continuous observation data and mobile gravity data,the study results from the data are as follows.( 1) The different movement rate of the fault ends provides conditions for stress accumulation.( 2) The high value zone of gravity anomaly appeared in the monitoring area before the earthquake,and gravity variation contour lines are parallel to the strike of fault; and the process of enhancingweakening-enhancing appeared in the regional gravity field before earthquake.
基金theJointSeismologicalScienceFounda tion (10 1118)and"Three in OneCombination"specialfundofChinaSeismologicalBureau
文摘By systematically analyzing the data of gravity reiteration in the Hexi region and taking a dynamic viewpoint, we have studied the evolution characters of gravity field during the preparation-occurrence of the Jingtai M S5.9 earthquake of June 6, 2000. The patterns of dynamic change of the gravity field clearly reflected how the gravity field evolved from the quasi-homogeneous state to non-homogeneous state for earthquake preparation and then the earthquake occurred. Besides, we have also studied the relation between the characteristic gravity change and strong earthquake activity.
基金supported by the National Natural Science Foundation of China(Nos.61475023,61307109 and 61475131)the National High Technology Research and Development Program of China(No.2013AA031501)+4 种基金the Specialized Research Fund for the Doctoral Program of Higher Education(No.20120005120021)the Fundamental Research Funds for the Central Universities(No.2013RC1202)the Program for New Century Excellent Talents in University(No.NECT-11-0596)the Beijing Nova Program(No.2011066)the Fund of State Key Laboratory of Information Photonics and Optical Communications
文摘We propose a novel scheme for synchronous optical sampling based on multicast parametric process. The linearly chirped and time-broadened pulses are utilized to replace the traditional mode-locked sampling pulses. An optical sampling rate of 80 Gbit/s is realized by using only one sampling source with repetition rate of 10 GHz.
