r66 Table 708 



ACCELERATION OF GRAVITY (</) IN THE UNITED STATES 



The following table is abridged from one for 219 stations given on pp. 50 to 52, Special Publication No. 40, U. S. 

 Coast and Geodetic Survey. The observed values depend on relative determinations and on adopted value of 980.112 

 for Washington (Coast and Geodetic Survey Office, see footnote, Table 707)- There are also given terms necessary 

 in reducing the theoretical value (Table 565) to the proper elevation (free-air) and to allow for topography and isostatic 

 compensation by the Hayford method (see introductory note to Table 707). 



To a certain extent, the greater the bulk of material below any station, the less its average density. This phenomenon 

 is known as isostatic compensation. The depth below sea-level to which this compensation extends is about 96 km. 

 Below this depth any mass element is subject to equal (fluid) pressure from all directions. 



Station. 



Key West, Fla 



New Orleans, La 



Austin, Tex. university 



El Paso, Tex 



Yuma, Ariz 



Charleston, S. C 



Birmingham, Ala 



Arkansas City, Ark 



Atlanta. Ga. capitol 



Beaufort, N. C 



Little Rock, Ark 



Memphis, Tenn 



Charlotte, N. C 



Las Vegas, N. Mex 



Knoxville, Tenn 



Grand Canyon, Ariz 



Cloudland, Tenn 



Mount Hamilton, Cal., Obs'y. 



Richmond, Va 



San Francisco, Cal 



St. Louis, Mo., university. . . . 



Pike's Peak, Col 



Colorado Springs, Col 



Washington, D. C, Bur. St'ds. 



Wallace, Kans 



Green River. Utah 



Cincinnati, Ohio, obs'y 



Baltimore, Md., university. . . 



Terre ILuite, Ind 



Denver, Co!., university obs'y. 

 Philadelphia, Pa., university. . 



Wheeling, W. Va 



Princeton, N. J 



Pittsburg, Pa 



Salt Lake City. Utah 



New York, N. Y., university. 



Winnemucca, Nev 



Cleveland, Ohio 



Chicago, 111., university 



Worcester, Mass 



Cambridge, Mass. observatory 

 Ithaca, N. Y., university . . . . 



Fort Dodge, Iowa 



Grand Rapids, Mich 



Madison, Wis., university. . . . 



Boise, Idaho 



Mitchell, S. Dak. university. . 



Lancaster, N. H 



Grand Canyon, Wyo 



Minneapolis, Minn 



Calais, Me 



Miles City, Mont 



Seattle, Wash, university 

 Pembina, N. Dak 



Smithsonian Tables- 



