Long-period seismographs at the Observatory's headquarters detect tremors world-wide and information on significant tremors is made public through the media.
天文台总部并装设长周期地震仪，监察世界各地的地震，重要的地震消息会透过传媒向市民公布。
The calculation program for the seismic detector constant in short period record recorded with pen
短周期笔绘记录地震仪常数计算程序
vertical-component high-gain short-period seismometer
垂直方向高增益短周期地震仪
STUDY ON PRE-SLIP PRECURSOR OF THE EARTHQUAKE--LONG PERIOD PRECURSORY SEISMIC WAVE
预滑与地震前兆——长周期波动研究
Long wave earthquake has come to Nagoya. Maybe there is an magnified earthquake far from here.
中午左右在名古屋感觉了长周期的地震波。有可能远方有大地震呢。
Characteristics of Far-Field Ground Motion of Wenchuan Earthquake and the Effect on Long-Periodic Structures
汶川地震远场地震动特征及其对长周期结构影响的分析
Study of long-period correction of seismic accelerogram for dynamic interaction analysis
相互作用分析中地震动输入长周期校正研究
Study on Atonement of Long Period Ingredient in Earthquake Ground Motions Based on Wavelet
地震动长周期成分缺失弥补的小波方法研究
A Comparative Study on Long-Period Seismic Responses for High-Rise Structures
高层建筑结构长周期地震反应的比较研究
STUDY ON ATTENUATION RELATIONSHIPS OF LONG PERIOD GROUND MOTIONS BASED ON NGA
基于美国NGA项目的长周期地震动衰减关系研究
Simulation of Long Period Strong Ground Motion at Near-Field by Numerical Green Function Method;
基于数值格林函数方法的近场长周期强地震动模拟
but that was precisely the idea adopted in some of the early instruments,
但是早期记录地震波的仪器，
A seismograph records earthquakes.
地震仪能自动记录地震。
seismometer free period
地震检波器自由振荡周期
Periodic slow earthquakes from the Cascadia subduction zone
卡斯凯迪亚消减带的周期性的慢地震
Varying Period Predictive Deconvolution of Imaging Gathers
地震成像道集域的变周期预测反褶积
Effect of Protruding Topography on Characteristic Period of Ground Motion
平台地形对地震地面运动特征周期值的影响
These phenomena could be caused by the effect of long-period wave generated from a large earthquake on far-field.
这些可能是大震的长周期波在远场的效应所致。