NUVEL-1 GLOBAL RELATIVE PLATE MOTION MODEL
COMBINES DATA
(277 SPREADING RATES, 121 TRANSFORM DIRECTIONS, 724 EARTHQUAKE SLIP VECTORS) FROM AROUND THE WORLD
TO FIND MOTION OF 12 MAJOR PLATES
SOME MOTIONS ARE DERIVED USING DATA FROM OTHER PLATES BY PLATE CIRCUIT CLOSURE
USED TO DESCRIBE AVERAGE PLATE MOTIONS OVER THE PAST 3 MILLION YEARS AND COMPARE THEM TO SHORTER-TERM MOTIONS FROM EARTHQUAKES AND SPACE GEODESY
(Press & Siever)
SPREADING RATES AT RIDGES IN ORANGE
CONVERGENCE RATES AT SUBDUCTION ZONES IN BLUE