B. Gravity Observations 



A subsidiary program of gravity observations vas conducted with a 

 LaCoste and Romberg geodetic gravimeter. This instrument has a range 

 of 6,000 mgals and a low drift rate. All possible check points and 

 pendulum bases were occupied enroute to and from the Antarctic. A 

 minimum of k reading was taken and averaged at each observation site. 

 The values obtained, were referred to the Hydrographic Office datum and 

 are presented in Table 3« 



TABLE 3. GRAVITY OBSERVATIONS 



Date of Observations: 



25 Nov 1959 - S3 Feb i960 



Reference Station: 



Hydrographic Office - Rm. Ikk 



Sta. 



No. Latitude 



Elev. 

 Longitude M 



Observed 

 Gravity 



Remarks 



1 38°50.8'N 



2 lf2°21.1'N 



3 te«20.0'N 

 k 8 °57.5'N 



5 8°57.2'N 



6 U3»36.6'S 



7 lf3°36.3'S 



8 l^3°36. 6'S 



9 U3*32«S 



10 lt-3*31.8'S 



11 67*2l»-.0 , S 



12 lH»l6'S 



13 in*rr.2*s 

 ±k innfc.2's 



15 



76'55.7'W 90 



7l«03.2'W 6 



71 , 00.8 , W k 



79»3if.O«w h 



79 e 3 1 *.6 , W k 



172°42.8'E 2 



172^3.0'E 3 



172°i*2.9'E 2 



172«38'E 7 



172«37.5*E 7 



179 e 55'W 52 



17W! 3 



17WE 122 



17^°55'E 3 



980«08Ul Hydro Rm. Ikk 

 98O.3965 South Station 



Boston, Mass. 

 98O.3962 Berth AIEA, Castle 



Isle, Boston, Mass. 

 978.2391 Pier 15C 



Balboa, Canal Zone 

 978.2389 Pier I 



Rodman, Naval Base 

 98O. 5^10 Fuel Pier 



Port Lyttelton, N.Z. 

 980.51*00 Pier k 



Port Lyttelton, N.Z. 

 980. 51)49 Gladstone Wharf 



Port Lyttelton, N.Z. 

 980.5105 Embassy Hotel 



Christchurch, N.Z. 

 $80. 508k Pendulum Base 



Christchurch, N.Z. 

 982.5588 Top of Scott Island 



Antarctica 

 98O.2829 Drydock Pier Gate 



Wellington, N.Z. 

 98O.2656 Dominion Seismologies! 



Lab, Wellington, N.Z. 

 98O.2939 Dominion Physical Lab. 



Lower Hut, Wellington, 



N.Z. 

 98O.2888 Dominion Museum (Te, Aro), 



Wellington, N.Z. 



5* 



