NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: Frank Reed
Date: 2013 Dec 27, 14:43 -0800
I've prepared a global map of the deflection of the vertical from the "EGM2008" data on the NIMA site. The map is on the same scale as the previous two regional maps with 24 pixels per degree of latitude and longitude. This one is color-coded. We can easily find those regions where the deflection is greater than a minute of arc or greater than half a minute or some other threshold.
The areas at sea with deflections larger than a minute of arc are almost all located above or near the great ocean trenches primarily in the Pacific Rim, and also around the arc of the Caribbean islands from the Lesser Antilles all the way to Cuba.
-FER
----------------------------------------------------------------
NavList message boards and member settings: www.fer3.com/NavList
Members may optionally receive posts by email.
To cancel email delivery, send a message to NoMail[at]fer3.com
----------------------------------------------------------------
