FAQs - Current Earthquake Information
- Can I get on a list to receive an e-mail message when there is an earthquake?
- How can I report an earthquake experience or related observation?
- Where can I see current or past seismograms?
- How do I find what I want?
- What pages should I bookmark?
- Why are squares used for the earthquakes?
- How were the symbol sizes chosen?
- How were the colors chosen?
- Why do so many earthquakes occur at a depth of 10km?
- What do "last hour", "last day" and "last week" mean?
- How do the earthquakes get to the webpages?
- Why do some earthquakes disappear?
- Why isn't the distance to the nearest fault provided?
- How did you decide which places to use for computing the distance to individual earthquakes?
- What is the reference point for the places?
- How did you decide which places to plot on the maps?
