Working Group 8
It is desirable that fluvial and lacustrine hydrological studies be included
in the programme of Working Group 8, which should then be named:
“Oceanography, fluvial and lacustrine hydrology, and coastal research”.
Working Group 9
1. The purpose of Working Group 9 shall be to advance knowledge and to
disseminate information on the technique of airphoto interpretation as
applied to studies and projects in civil engineering.
2. The area of interest shall be defined as airphoto interpretation techniques
and case studies for engineering projects, whereby “soil” and “rock” are
defined as in soil mechanics and foundation engineering.
3. For purposes of conveying information and description of airphoto patterns,
the elements of the total pattern shall be as follows:
A. Elements of form:
1. Topographic form
2. Drainage form
3. Erosional form
B. Elements of tone and texture:
1. Tone and texture of vegetation
2. Tone and texture of land use
3. Tone and texture of materials
4. Much profit may be gained from a continuous exchange of ideas and
techniques of interpretation with other working groups of Commission VII
and close liaison with Working Group 4 of Commission IV will be main
tained to integrate the measurement phase with the interpretation phase.
General resolutions
1. It would be very much appreciated by Commision VII, if the I.S.P. gave
all possible support to the abolishment of all unnecessary restrictions on the
delivery of air photographs in many areas.
2. It is recommended that detailed study of the following problems be en
couraged, because these appear to offer opportunities for significant ad
vances in the application of aerial photography and photo interpretation:
a. Photo quality for photo interpretation purposes.
b. Photo scale as a limiting factor in interpretability.
c. Seasonal changes in light reflectance.
d. Increase in accuracy of photo measurements for photo interpretation
purposes.
e. Development of automatic and/or electronic techniques for photo
interpretation.
3. It is advised that every country should establish a Central Register in which
