We can notify you when changes are made to this system or if there are any significant system events.
If you would like to be informed please subscribe using the form below. If you are already subscribed and
wish to unsubscribe, please use the same form. If your email address has changed, simply unsubscribe with
your old email address and resubscribe with your new email address.
If you use software that protects you from spam,
please configure it to allow all messages from listserver.usgs.gov and igsrsparc2.er.usgs.gov.
You will receive an email confirmation of your request. Please read our