World Wide Broadband Station Request Data Form

Updated: 06/08/2008

This service is currently offline

Help

Station:
COR Oregon, USA CTAO Australia GNI Armenia GUMO Guam DWPF Florida, USA (Note 1)

HRV Harvard, USA KIP Hawaii, USA KONO Norway SNZO New Zealand SJG Puerto Rico

TATO Taiwan ULN Mongolia

All Stations

Channel:
LHZ vertical LHN horizontal north-south LHE horizontal east-west All LH channels

BHZ vertical BHN horizontal north-south BHE horizontal east-west All BH channels

UTC Start Date (mm/dd/yy): Start Time (hh:mm):

Number of minutes to save: (480 max for LH* channels, 120 max for BH* channels)

Current NEIS Event Report: (optional)

Output Format: PSN Type 4 Event File SAC Binary Format

Notes:

1: Only vertical (Z) channels are available for this station 


Broadband Data Request Information:


Help:

How to use the Current NEIS Event Report feature: Event Report information can be added to the field by using the systems clipboard. First click on the Current NEIS Event Report link. This should display a new page with the current NEIS event report listings. Using the mouse and the left button, highlight only one event and then transfer the complete line to the systems clipboard. This can be done by pressing the Ctrl-c keys or using the Edit / Copy menu items. Now press the browser's Back button and highlight the Event Report field. Now paste the clipboard information into the field by pressing the Ctrl-v keys or use the Edit / Paste menu items. The event you selected should now be displayed in the Event Report field. You can now select the station(s), channel(s) and number of minutes to save and then press the Submit button. If the UTC Start Date and Time are left blank the beginning of the event file(s) will be the event start time. This can be overwritten buy supplying information in these fields.

Here's how it works: The Live Internet Seismic Server (LISS), located in Albuquerque New Mexico, collects data from selected broadband seismic sensors located around the world. They receive the data using the Internet and make the data available to other Internet users. Here's a block diagram. I created a "C" program that connects to their server using TCP/IP and saves the seismic data received from each station to disk. This program is a 32-bit command line program that runs as a service on my Win2003 Server System. This system is connected to the Internet full time using two DSL high speed modems.

The form above is used to access the data saved from the selected sensors I am monitoring. When you submit a request, a CGI script (another 32-bit command line "C" program) tries to extract and create event file(s) in the format selected and creates a Web page with one or more links to newly created event files. The user can then download the file(s) using HTTP for viewing with WinQuake (or other seismograph viewing software) or view the event file as a GIF image. Since the seismic data to the LISS server, and then to my system, use the Internet there can be holes in the data. You may receive an error message if the start time can not be found or if there are any holes in the data within the created event file(s).


This page accessed times since November 27, 1999


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Larry Cochrane - www.seismicnet.com/contact.html