[Realtime-feed-users] Help understanding difference in location description between Atom title and CAP headline

[Fee, Jeremy]

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From: Steve Hakusa
Date: Mon, 4 May 2015 13:17:12 -0400

Hi,

I'm looking to understand the difference between the location reported in
the Atom feed entry title vs that reported in the attached CAP alert
headline.

It appears that the Atom title is an approximation of the epicenter
location, represented in kilometers from the nearest large-ish city, and
the CAP headline is a (frequently different) nearby city.

1. Can you explain how the cities are chosen in each case?
2. Is there a reason that the two are different?

The CAP headlines look somewhat inaccurate when the earthquake is far out
to sea and the closest city is hundreds of kilometers away.

Here are a few examples, pulled from
http://earthquake.usgs.gov/earthquakes/feed/v1.0/summary/4.5_week.atom
currently
lists

<entry>
<id>urn:earthquake-usgs-gov:us:20002b5q</id>
<title>M 4.9 - *103km SSE of Iranshahr, Iran*</title>
<updated>2015-05-04T11:49:33.310Z</updated>
<link rel="alternate" type="text/html" href="
http://earthquake.usgs.gov/earthquakes/eventpage/us20002b5q"/>
<link rel="alternate" type="application/cap+xml" href="
http://earthquake.usgs.gov/earthquakes/feed/v1.0/detail/us20002b5q.cap"/>

vs us20002b5q.cap

<headline>EQ 4.9 *Chabahar, Iran* - PRELIMINARY REPORT</headline>

Similarly:

<entry>
<id>urn:earthquake-usgs-gov:us:20002b3h</id>
<title>M 4.7 - *64km S of Pirgos, Greece*</title>
<updated>2015-05-04T12:11:39.421Z</updated>
<link rel="alternate" type="text/html" href="
http://earthquake.usgs.gov/earthquakes/eventpage/us20002b3h"/>
<link rel="alternate" type="application/cap+xml" href="
http://earthquake.usgs.gov/earthquakes/feed/v1.0/detail/us20002b3h.cap"/>

vs us20002b3h.cap

<headline>EQ 4.7 *Iraklion, Crete, Greece* - PRELIMINARY REPORT</headline>


Thanks!
Steve
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