Online Manual - Serch for earthquakes and download data

List up earthquake matches to your specification

1. Select data type

Select a data type from to List of data and the (K-NET , K-NET & KiK-net or KiK-net).

2. Specify query terms

Check the boxes of criteria. For example, if you want to search for earthquakes over magnitude 3 occurred in Feb. 2008, check both and .

3. Input query terms

For the example above, you should input parameters as shown below.

Unchecked query types will be ignored even if you had input parameters.

4. Search for earthquakes

Click to perform the search. Results of the query will be shown in the earthquake list. Next steps below are the same as steps on the help page "How to select an earthquake and download data".

5. Select an earthquake event

Select an earthquake event, you can see the strong-motion data at the strong-motion data list ,and the analytical images as thumbnail. Now you are ready to download all strong-motion data listed in the data list.

6. Download all strong-motion data

Click to download all strong-motion data of the earthquake compressed into a single tar.gz archive. The largest one of the archive file has tens of megabyte size. So if you do not want all data, choose data by the steps shown below.

7. Choose a strong-motion data

Select a strong-motion data in the data list, you will see images of acceleration wave and velocity rsp. spectrum as thumbnail . Now you are ready to download the data.

8. Download strong-motion data of all channels

Click , you can download the strong-motion data of all channels compressed into a single tar.gz archive.

9. Other information

* Site Information
If you want to know the code of a specific site, please click Site Information button.

* Input multiple site codes in query terms box
You can specify multiple site codes as a query term by comma/space delimiting. Please input full 6 characters of the site code.

* Sort the list
Clicking anchors on the list box, you can see the list sorted by a specific key in ascending order. If you click the anchor again, the list is sorted in descending order.

* Change thumbnail image
Using the pull-down menu below a thumbnail image, you can change the thumbnail image.

* Enlarge thumbnail image
If you click on the thumbnail image, the image will be shown in 100% size on the new window. Then clicking PostScript File on the new window , you can download PostScript file of the image.

* Resize the window
Resizing the Netscape Navigator window may cause an error to clear search parameters. In this case, retry the search.

* About the format of the download file
Click , to download the file format, select the .

* Download Hi-net EVENT DATA
Click , you can download Hi-net seismic event data. But you are not able to download when there is not the Hi-net event data yet.

* Download F-net WAVE DATA
Click , you can download the F-net continuous waveform data from occurring the earthquake 1minute before to after 5 minutes. If the earthquake selected is from more than two weeks after the earthquake occurring , F-net download data search screen.

* Animation
Select the type of animation from the display screen that displayed by clicking , you can play the animation of the earthquake event chosen from the earthquake list.