Question

GPS data can be used to track the rate and direction of plate movement. If a GPS unit measures a latitude velocity of 28.2 mm/yr and a longitude velocity of 59 mm/yr, what is the velocity of plate motion?

Answer 1

Answer and Explanation:

Rate and direction of plate movement  obtained by using a latitude velocity of 28.2 and a longitude velocity of 59 then velocity of plate motion.

latitude velocity of 28.2 mm/yr

longitude velocity of 59 mm/yr

velocity = s/t  but ib calculation GPS using formula where

a = sin²(Δφ/2) + cos φ1 ⋅ cos φ2 ⋅ sin²(Δλ/2)

c = 2 * atan2( √a, √(1−a) )

d = R * c

then velocity of plate motion is 65.4 mm/yr