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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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