Gloersen, P., Nordberg, W., Schmugge, T. J., Wilheit, T. T., and

Campbell, W. J., 1973b, Microwave signatures of first-year and

multiyear sea ice: Jour. Geophys. Research, v. 28, no. 18,

p. 3564-3572.

Hammack, James C., 1977, Landsat goes to sea: Photogrammetric Eng. and

Remote Sensing, Vol. XLIII, no. 6, p. 683-691.

Harris, G. and Graham, L. C., 1976, Landsat-radar combination; 13th

Congress Int. Soc. Photogramm. Comm. VII, Helsinki, Finland.

Hemphill, W. R., Stoertz, G. E., Markle, D. A., 1969, Remote sensing of Internat. Symposium on Remote Sensing of

luminescent materials:

Environment, 6th, Ann Arbor, Mich. 1969, Proc., p. 565-585.

Hemphill, W. R., and Watson, R. D., Bigelow, R. C., and Hessen, T. D., 1977, Measurement of luminescence of geochemically stressed trees and other materials, U.S. Geol. Survey Prof. Paper 1015, p. 93-112, 14 figs., 9 tables.

Kleinkopf, M. D., de la Fuente D., M. F., Raines, G. L., and Peterson, D. L., 1977, Geophysical Research in Porphyry Copper Exploration, Northern Mexico: Geol. Soc. of America, Abstracts with Program, Rocky Mountain Section, vol. 8, no. 5, p. 595.

REFERENCES

Adey, A. W., 1972, Microwave radiometry for remote sensing from aircraft

and spacecraft, in Resource Satellites and Remote Airborne Sensing

Aviation Week and Space Technology, 1977, Special reports:

Satellite

technology serving Earth:

Special Issue of Aviation Week and Space

Technology, v. 107, no. 16 (17 Oct 77), p. 9 and p. 40-166.

.

Basharinov, A. E., Borodin, L.' F., and Shutko, A. M., 1974, Passive

Sensing of Environment, 9th, Ann Arbor, Mich. 1974 Proc., p. 363-367.

Carter, W. D., Kowalik, W. S., Ballon A., Raul and Brockmann, C., (in

press), Mapping Andean Salar deposits by Landsat radiance values:

Open file Rept., 41 p.

Deutsch, Morris, 1974, Survey of remote-sensing applications:

Water

Deutsch, Morris, Strong, A. E., and Estes, J. E., 1977, Use of Landsat

data for the detection of marine oil slicks :

Proc. Ninth Offshore

Technology Conference, Paper OTC 2763, v. 1, p.

311-318.

Dykstra, Jon D. and Birnie, Richard W., 1977, Reconnaissance geologic

mapping in Chagai Hill, Baluchistan, Pakistan, by computer processing

of Landsat digital data:

III Pecora Symposium program abstracts.

Edgerton, A. T., and Woolever, G., 1974, Airborne oil pollution surveillance

system (abs.): Internat. Symposium on Remote Sensing of Environment,

9th, Ann Arbor, Mich. 1974, Proc.,

p.

1791.

Environmental Protection Agend

1975, An application of ERTS technology

to the evaluation of coal strip mining and reclamation in the

northern Great Plains:

EPA Nat. Field Inv. Center, Denver.

Ericksen, G. E., Vine, J. D. and Ballon A., Raul, 1977, Lithium-rich

brines at Salar de Uyuni and nearby salars in southwestern Bolivia:

U.S. Geol. Surv. Open File Rept., March 1977, 48 p.

Falconer, A., Deutsch, Morris, Myers, L. C., and Anderson, A., 1975,

Photo-optical contrast stretching of Landsat data for multidisciplinary

analyses of the Lake Ontario Basin:

Proc. Third Canadian Symp. on

Remote Sensing, September 1975, p. 173–193, Canadian Aeronautics

and Space Institute, Ottawa.

Ferrigno, J. G., and Williams, R. S., Jr., 1977, Satellite image atlas

of glaciers: Summary of a proposed paper for the International

Glaciological Society's "Symposium on Dynamics of Large Ice Masses,"

Carleton University, Ottawa, Canada, 21-25 August 1978, 6 p. (preprint).

Fischer, William A., Lathram, Ernest H., 1973, Concealed structures in

Arctic Alaska identified on ERTS-1 imagery: 011 & Gas Jour.,

May 28, 1973, 5 p.

Gloersen, P., Wilheit, T. T., Chang, T. C., Nordberg, W., and Campbell,

W. J., 1973a, Microwave maps of the polar ice of the Earth:

NASA

Goddard Space Flight Center, X-65-2-73-269.

Moon

Current plans for additional lunar exploration are uncertain.

The Lunar Polar Orbiter (LPO), a spacecraft primarily designed for

systematic geochemical measurements of the surface, is being studied.

Large jumps in knowledge could occur from future planetary

exploration with respect to Venus and the satellites of the outer planets

(Jupiter, Saturn) which are at present largely unknown.

The next few years will see a rapid expansion of our knowledge of

the solar system.

The major events anticipated are as follows:

Mars

In addition to the Viking missions previously cited, high public

interest in Viking has stimulated recommendations for another Mars mission

in 1984.

Rovers with a 100 km roam radius and an orbiter equipped

mainly with geochemical sensors and penetrators, and possibly a sample

return, are being considered.

Venus

A Venus orbiter imaging radar (VOIR) is needed to study the surface

features of this planet.

This radar has been given the highest ranking by

most science advisory groups and will return high resolution images

(less than 1 km) of most of the planet.

Because Venus is closest to

the Earth in size and composition, this mission, and the 1978 radar

mission to measure mechanical properties of the Venusian surface, have

particular interest to terrestrial geologists. Two GS scientists

are members of the science team.

Jupiter

Two Voyager spacecraft are presently on their way to Jupiter

and Saturn.

The satellites of those planets range widely in density and

surface properties, and considerable variations in the geology are

anticipated. Voyager will return several thousand pictures for study

and analysis.

A subsequent mission to orbit Jupiter would provide a more

systematic set of observations than will be possible from Voyager.

Saturn

The Voyagers, launched in 1977 for an encounter with Jupiter,

will continue on for an encounter with Saturn in 1983.