ant ar ctic ▁Mountains , ▁Mc M ur do ▁D ry ▁Valle ys , ▁Sh ack leton ▁Mountains , ▁Be ard more ▁Mountains , ▁Ant ar ctic ▁Pen ins ula , ▁Mount ▁Si ple , ▁Am und sen - Sc ott ▁South ▁P ole ▁station ▁and ▁at ▁deep ▁field ▁research ▁locations ▁in ▁West ▁Ant arct ica . ▁His ▁program ▁conducted ▁research ▁in ▁the ▁discipl ines ▁of ▁global ▁position ing ▁systems , ▁ge odes y , ▁cr ust al ▁motion , ▁gla cial ▁ge oph ys ics , ▁air bor ne ▁ge osp atial ▁systems , ▁air bor ne ▁ge oph ys ics , ▁se ism ology , ▁light ▁rad ar ▁( l id ar ), ▁top ographic ▁mapping ▁and ▁he ▁managed ▁the ▁US GS ▁South ▁P ole ▁winter - over ▁program ▁from ▁ 1 9 8 9 ▁to ▁ 1 9 9 4 . ▁He ▁was ▁appointed ▁by ▁the ▁National ▁Academy ▁of ▁Sciences , ▁Pol ar ▁Research ▁Board ▁as ▁a ▁US ▁delegate ▁to ▁the ▁Scient ific ▁Committee ▁on ▁Ant ar ctic ▁Research ▁Ge osci ences ▁Stand ing ▁Scient ific ▁Group ▁from ▁ 1 9 9 5 – J uly ▁ 2 0 1 2 ▁and ▁was ▁appointed ▁as ▁a ▁member ▁of ▁the ▁Ad vis ory ▁Committee ▁on ▁Ant ar ctic ▁Names ▁in ▁ 1 9 9 4 . ▁M ull ins ▁Valley ▁appears ▁in ▁the ▁Ant ar ctic ▁research ▁literature , ▁on ▁the ▁maps ▁from ▁the ▁British ▁expedition ▁of ▁Captain ▁Scott ▁and ▁in ▁aer ial ▁photograph s ▁from ▁the ▁United ▁States ▁expedition ▁Operation