Getting a USGS data list for checking

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This topic relates to the downloading of a data list from the USGS Interactive Web Page for use with the cross referencing facility for data, or for using the alternative built in data collection facility.

You can use the download file from the USGS Interactive map, which will allow you to check earthquakes down to Magnitude 0, or the built in 30 data collection which goes down to Magnitude 2.5

It has come to my attention that there may be a versioning problem with the interactive data, which I have taken up with USGS, and for the time being I would recommend you use the built in format.

If using the Interactive data click the map to go to the site (in a new tab/window), or return to the program and continue. Otherwise click here to jump to the next part.

Once you have the data selection as you want it continue by clicking on the 'Download Earthquakes' button.

If you want to check everything in the selection which ignores the further criteria of magnitude, depth etc that you may have selected, you should select the larger figure. Leave the file type as CSV.

Remember where you have saved the file and now continue to the next step in the process.

The button to move to the next page will light up whn you hover the mouse pointer over it, provided the button is active.

On this first screen the back button is not active but the forward button is. If you are using the built in 30 day list simply click to forward button to go to the next page. Same applies if you have already downloaded the Interactive list and intent to use that. Aside from the potential versions problem the Interactive list has the advantage that you can tailor the amount of data you are checking to specific ranges using the criteria on the Interactive page. With the build in list it is always 30 days and always Mag 2.5+, but you can alter the minimum magnitude to be checked.

It is at this point that you decide which data file you are going to use. If it is the built in one then check the checkbox on the top line, otherwise click the button to find the file you downloaded. The program will remember the folder you last used for this and offer that as the starting point.

The name of the file you selected will be displayed if you are going the Interactive route. If you change your mind you can just click the built in checkbox and your file selection will be ignored.

At this point you can set the minimum magnitude to be used. Normally I would suggest that you leave this as is for the built in method and set it to 1 for the interactive method. If you leave it as is for the interactive method all quakes under Mag 1 will be added to your database.

Check only will run through and collect all the data but not actually do anything unless you tell it to. Check and Update with run through and will automatically commit the data to the database, unless there is an error in the which case all changes will be rolled back.

In either case you will see one of these two when click either of the buttons.

As the program runs you will see the numbers changing and the Magnitude and earthquake ID will be added to the list as each one is completed.

You can abandon the run at any time using the Abort command in the centre of the screen. Using this will not damage your data in any way as nothing is written until the end. You can also turn off the listing part to reduce screen flicker if you wish. This has no effect on the collection of the data.

If this was a check only run you will see this message when it finishes.

If you answer No it will write the changes to a file so you can examine them if you wish and will display a message similar to this:

If you selected Yes, or the run was set to update anyway, you will see this message on successful completion.

In the event of there being a problem downloading the 30 day file from USGS you will be advised.

When you are done click the close button on the form.

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