Geophysical Abstracts 152 January-March 1953

22 GEOPHYSICAL ABSTRACTS 152, JANUARY-MARCH 1953
the magnetization of disturbing bodies from the data of magnetic and
gravimetric surveys]: Akad. Nauk SSSR Izv., Ser. geoflz., no. 5, p. 55-56,
1952.
A method is presented of finding by theoretical calculations the intensity and
the direction of the magnetization of a buried body from the data obtained by
gravity and magnetic measurements. The disturbing body is assumed to be
homogeneously magnetized.
Necessary formulas are derived correlating magnetic and gravity anomalies,
first for 3- and 2-dimensional bodies with vertical magnetization, later extended
to a 2-dimensional body with inclined magnetic axis. Such relations can be
established for any point on the surface of the earth. By repeating the proce­
dure for several points and averaging the results, it is possible to improve the
accuracy. 8. T. V.
Gel'fand, I. S. Direct methods of interpretation of gravitational and magnetic
anomalies produced by two-dimensional bodies. See Abstract 14196.
MAGNETIC OBSERVATIONS AND SURVEYS
14241. Hermans, L. R6sultats des observations magne'tiques effectue'es de 1934 a
1938 pour I'^tablissement de la carte magnetique du Congo beige [Results
of magnetic observations made between 1934 and 1938 for the setting
up of the magnetic map of Belgian Congo]: Inst. Royal Colonial Beige
Mem., tome 5, fasc. 3,67 p., 1951.
This report contains data on stations occupied and magnetic observations
in the region between longitudes 22.5 and 27.5 east and between latitude 0.5
south and the southern border of the Belgian Congo. M. C. R.
14242. Baird, H. F., and Cullington, A. L. Magnetic resurvey of New Zealand
at epoch 1st July, 1945: New Zealand, Dept. Sci. Indus. Research,
Geophys. Mem. 1, 54 p., 1952.
The results of magnetic resurvey of New Zealand and its outlying islands are
presented. The field observations were made between May 1941 and December
1948 using an earth inductor magnetometer, lent by Carnegie Institute of Wash­
ington. Declination, horizontal force, and inclination were observed and col­
lated with simultaneous D, H, and I traces on the Amberley magnetograms from
Amberley. A list of 219 stations, with their data, is given; 7 isomagnetic charts
for declination and inclination, and for horizontal, vertical, total, northerly,
and easterly forces are appended. 8. T. V.
14243. Mayaud, Pierre-Noel. Champ magn^tique moyen et variation se"culaire
en Terre Adelie au lei janvier 1952 [The average magnetic field and
secular variation in Adelie Land on January 1, 1952]: Acad. Sd.
Paris Comptes Rendus, tome 236, no. 9, p. 954-956, 1953.
Magnetic elements at Port-Martin on January 1, 1952 were: jff=l,063y;
D=37°24' E; I=89°06' S. M. C. R.
14244. Bahnemann, Fr. Magnetic measurements in the area of the emery de­
posits on the island of Ndxos: Greece Uperesia Ereunon Upedaphous
Ereunai oruktou ploutou tes Ellados (The Mineral Wealth of Greece)
tomos 1, p. 69-94,1951.
During the summer of 1949 different parts of Naxos island were explored for
emery deposits. Magnetic surveys, both vertical and horizontal were made,