[OSM-talk] Intriguing artifacts in GeoEye data

David G. Smith PE PLS dsmith at synergist-tech.com
Tue Jan 19 18:31:56 GMT 2010


I noticed the same on the southern coast of Haiti as well (I have been doing some mapping in and around Jacmel), with some oddities where features and ocean collide, with the ocean being too far inland - and editing of the coastline layer does not appear to be reflected in rendering.


David G. Smith PE PLS
Synergist Technology Group, Inc.
570.280.6763


-----Original Message-----
From: talk-bounces at openstreetmap.org [mailto:talk-bounces at openstreetmap.org] On Behalf Of John F. Eldredge
Sent: Monday, January 18, 2010 10:52 AM
To: ce-test, qualified testing bv - Gert Gremmen; talk-bounces at openstreetmap.org; OpenStreetMap talk mailing list
Subject: Re: [OSM-talk] Intriguing artifacts in GeoEye data

If only man-made artifacts are displaced, but not the terrain, that must be a mapping error.  An actual earthquake land-shift would have displaced the terrain, and moved buildings and other artifacts along with the land.

--
John F. Eldredge -- john at jfeldredge.com
"Reserve your right to think, for even to think wrongly is better than not to think at all." -- Hypatia of Alexandria

-----Original Message-----
From: "ce-test, qualified testing bv - Gert Gremmen" <g.gremmen at cetest.nl>
Date: Mon, 18 Jan 2010 15:42:03
To: openstreetmap<talk at openstreetmap.org>
Subject: [OSM-talk] Intriguing artifacts in GeoEye data

If you look at the coast of Haiti, west of port-au-prince some strange artifacts are shown on a lot of places where building and beach clubs (I presume) touch the coast line.

Look here for example:

http://www.openstreetmap.org/?lat=18.5474002361298&lon=-72.5111174583435&zoom=15

and enable the GeoEye data.

Under the sea level traces of the coastal buildings are seen. 

It seems as if the whole of Haiti coastline slided 50 meters southwards due to the quake.

It's strange however, that only human constructions leave traces, and this makes this theory less probable.  

Any thoughts ???



Gert Gremmen
-----------------------------------------------------

Openstreetmap.nl  (alias: cetest)
P Before printing, think about the environment. 

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