There are no author-identified significiant results in this report

Mccauley, J. R.

Yarger, H. L.

English

NASA Technical Reports Server

r N7.4 1 0.7 4.8
' wide dis.
:; "ces Survey PROGRESS REPOF,.
, any use m6ade  threo" ut liability FOR
THE PERIOD MARCH 1974 - MAY 1974
'(E74-10748) SKYLAB STUDY OF WATER N74-32774
QUALITY Progress Report, Mar. - May
1974 (Kansas Univ.) 4 p HC $4.00
CSCL 08H Unclas
G3/13 00748
FOR
SKYLAB STUDY OF WATER QUALITY
NASA CONTRACT NAS 9-13271
EREP PROPOSAL NO. 540-GI
TASK-347
SITES -416 + 423
PRINCIPAL INVESTIGATOR: H. L. YARGER
REPORT PREPARED BY:
JA ES R. McCAULEY
EARCH SCIENTIST
REPORT APPROVED BY: /
UAD ,I 1 VAD ~ D
PRINCIPAL INVESTGATOR
https://ntrs.nasa.gov/search.jsp?R=19740024661 2020-03-23T05:22:55+00:00Z
SUMMARY OF RESEARCH OBJECTIVES
Two Kansas reservoirs will be studied using Skylab data in conjunction with
simultaneo,e: -round truth information in an attempt to detect and monitor variouc
parameters of water quality. Water samples will be collected from the reservoir or
reservoirs under investigation and low-level aircraft support missions will be flown
to acquire photographs which will approximate the-spectral coverage of forthcomina
Skylab photographs. Image analysis and data processing techniques will be developed
to aid in the correlation of Skylab data with ground truth data and supporting aerial
photography.
A. OVERALL STATUS
We have received 4X enlargements of S-190A photography taken over south-
east Kansas on September 18, 1973 along track 58. These transparencies should
assist our study of the three lakes sampled Toronto, Fall River, and Elk City. These
lakes are quite small on 70mm. photos and as a result film analysis is difficult.
Available apertures for our Macbeth EP1000 macrodensitometer are too large too
make any measurements totally within the boundaries of any of the three lakes under
study. This of course negates the measurement of smaller areas within the lake in
order to detect tonal variations across the surfaces of the lakes. Use of 70mm.
photos on the IDECS is also hampered by the small size of the three lakes since the
vidicon does not magnify sufficiently to allow meaningful image enhancement and
level slicing. The 4X enlarged transparencies however, are of sufficiently large
scale to permit both densitometer and IDECS analysis of the three southeast Kansas
lakes.
IDECS analysis has been performed on both S-190A and B photography. The
results confirm first-look conclusions that some tonal differences exist between lakes
but that the lakes themselves show very little internal tonal variation. The only
reservoir to i:play tonal variations detectable by IDECS using density-to-hue con-,
version is Elk City Reservoir. Two different tonal regions can be separated on the
lake buT only on the red band of the S-190u and on Si90B photography.
The tonal variation in this lake is most likely due to differences in the amount of
suspended _:':. Water samples bear this ou' :.. ::at samples collected from the
lighter region show concentrations of suspended solids that are higher than those
from the darker region.
S-192 screening film has been received for SL-4 EREP pass 97 on January
31, 1974. This pass covers lakes in Southeastern Kansas and Northeastern Oklahoma.
Appropriate channels have been ordered which will be useful in supplementing
S-190A and B photography.
B. RECOMMENDATIONS CONCERNING DECISIONS AND/OR ACTIONS
REQUIRED TO ENSURE ATTAINMENT OF THE EXPERIMENT'S SCIENTIFIC
OBJECTIVE
NONE.
C. EXPECTED ACCOMPLISHMENTS DURING THE NEXT REPORTING PERIOD
Densitometer measurements of the three southeast Kansas reservoirs will
be compared with the various water quality parameters measured from the samples
collected during Skylab overflight. Analysis of S-192 imagery and CCT'S which
have been ordered will also begin during the next period upon their receipt.
D. SIGNIFICANT RESULTS AND THEIR RELATIONSHIPS TO PRACTICAL
APPLICATIONS OR OPERATIONAL PROBLEMS
NONE.
E. SUMMARY OUTLOOK FOR THE REMAjiviNG EFFORT TO BE PERFORMED
Analysis of S-190A and B photograph>' wi!! continue and Will receive
primary attention during the next period. No difficulties are anticipated in the
processing and analysis of additional EREP data which has been requested. Work
on these products will commence upon their arrival.
F. TRAVEl SUMMARY AND PLANS
NONE.
G. FINANCIAL REPORT
A statement of financial status for this project will be sent under separate
cover by the CRINC accounting office.


Skylab study of water quality

Abstract

Similar works

Full text

Available Versions

NASA Technical Reports Server