These seismogram displays depict ground motion recorded by seismograph stations in real-time, updated every few minutes. Each plot represents 24 hours of data from one station. Read more » 71 stations on this map ...

2014年9月21日 · An Illustrated Guide to Reading a Seismogram By Communications and Publishing September 21, 2014. Download Video; Video Transcript. Download Video. Right-click and save to download. Detailed Description. This video provides a tutorial for anyone interested in interpreting the seismic records on public webicorder displays. Details

2012年1月1日 · Nearly 12 minutes after the quake started, the first seismic waves hit California. The recordings of these waves with the broadband seismometers of the Berkeley Digital Seismic Network allows the blogger to make good on a promise he made a while ago, namely to further explore how to read a seismogram. Figure 1 shows a half hour long record of ...

Ever wondered how to read the data on a seismogram? This playful animation created for the general public by the USGS describes what a seismogram is, how they are recorded and what to look for in the seismic traces recorded on a seismometer. Seismometers measure vibrations. More vibration = more wiggle. Some seismometers measure only up and down.

An Illustrated Guide to Reading a Seismogram (USGS) Everything you need to know about seismology can be found in this Manual!: ... Germany. jAmaSeis # jAmaSeis is a seismology teaching aid developed by IRIS’s Seismographs in Schools program. It is widely used by science educators worldwide. For full details on using jamaseis see here ...

2015年4月29日 · What looks confusing at first can easily be deciphered when you think of reading it line by line, like a page in a book. Each line, read from left to right, shows the motion of the ground caught by the seismometer over exactly one hour, indicated by the 10 minute marks along the top of the picture. The vertical markings depict the actual time ...

USGS Earthquake Hazards Program, responsible for monitoring, reporting, and researching earthquakes and earthquake hazards

How to Read the Display. The seismograms displayed are from a few of the seismograph stations routinely recorded by the Northern California Seismograph Network. Each is a record of how the ground moved at a particular seismograph station in Northern California during a 24-hour period. The plots are "magnified" according to the level of ...

seismographs will enable novice learners to conceptually understand how the energy of a seismic wave is measured. Step 2: Introduce the two main types of seismic waves: primary (P-waves) and secondary (S-waves) using the animation Seismic Wave Motions: 4 Waves Animated. Have students take note of the two main differences: 1) P-

Background on Reading Seismograms; A seismogram is a record written by a seismograph in response to ground motions produced by an earthquake, explosion, or other ground-motion sources. Seismograms of common events are compiled to show the different seismic signals recorded by ground-shaking events. Seismograms can record everything from nearby ...