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The Viking Lander
Labeled Release Data Set
The Viking Lander Labeled Release Biology
Experiment PDS4 bundle contains Viking
Lander Labeled Release Biology Experiment
data updated from a PDS3 dataset. The
Labeled Release (LR) instrument used two
solid- state beta particle counters to
measure carbon-14 labeled gas evolved from
soil samples as a function of time. Martian
soil samples were housed in one of four test
cells and were moistened with a labeled
aqueous nutrient solution. The scientific
objective of the experiment was to test for
the presence of heterotrophic metabolism due
to microbial organisms in the soil. Viking
Lander 1 performed four analysis cycles,
whereas Viking Lander 2 performed five
cycles. There were also background
measurements made before several of the
analysis cycles. These are stored as
separate data products. The bundle includes
the LR radioactivity counts and temperature
data, which are stored in ASCII tables, PDS4
labels, browse products, and supporting
documentation. - Data_raw collection - LR
radioactivity counts and temperature data
files and their PDS4 labels. Data files and
labels are divided into two direct.
The original PDS3 volume is available at the
links below.
PDS4 Bundle
|
root directory |
Top level of bundle. |
|
readme.txt |
Introduction to the bundle. |
|
browse collection |
Plots of the LR data stored as GIF files.
|
|
data_raw collection |
LR radioactivity counts and temperature data files and their PDS4 labels.
Data files and labels are divided into two directories - one for each
lander.
|
|
document collection |
Several documents about the Viking mission, the Lander spacecraft, the LR
instrument, and the LR dataset. |
|
miscellaneous collection |
An ASCII table with an index of data products. |
PDS3 Volume
The Viking Lander Labeled Release Data
Set contains results of the experiment to
test for the presence of heterotrophic
metabolism due to microbial organisms in the
soil. Viking Lander 1 performed four
analysis cycles, whereas Viking Lander 2
performed five cycles.
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