The University of Hawaii lunar ranging experiment geodetic-geophysics support programme

Abstract

Secular changes in the geocentric positions of lunar laser ranging stations will include components due to local and regional crustal deformations and tectonic plane movements. Terrestrial geodetic and geophysical methods appear to be the most timely and economical approach to determining local and regional effects. The University of Hawaii expects to implement a comprehensive geodetic-geophysical programme in support of its lunar ranging programme in mid-1976. Measurements will include ( a ) repeated geodetic surveys between the observatory and selected points on the island of Maui and neighbouring islands, ( b ) repeated level surveys on the island tied to ocean tide gauges, ( c ) tilt meter monitoring of changes in the local vertical, ( d ) gravimetric Earth tidal measurements, and ( e ) seismic monitoring of crustal activity. A similar programme is also being undertaken by the University of Texas in support of their MacDonald Observatory lunar ranging programme.