VL1/VL2 MARS LABELED RELEASE V1.0

The Labeled Release (LR) instrument on each Viking Lander operated throughout the Primary Mission and continued into the Extended Mission. The basic analysis cycle for the Labeled Release experiment was to deliver a sample of martian soil to one of four test cells, seal the cell and moisten the soil with an aqueous solution of carbon-14 labeled organic media. A second nutrient injection was typically done about 7-8 Mars days after the first injection. The test cell was continuously monitored for the release of radioactive labeled gas as an indicator of heterotrophic metabolism. Viking Lander 1 (VL1) conducted four analysis cycles with two nutrient injections for cycles 1, 2, and 4 and three injections for cycle 3. Viking Lander 2 (VL2) conducted five analysis cycles. The first four cycles had two nutrient injections each, and the fifth cycle had one injection [LEVIN&STRAAT1976B

Data and Resources

This dataset has no data

Field Value
accessLevel public
accrualPeriodicity irregular
bureauCode {026:00}
catalog_@context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
catalog_@id https://data.nasa.gov/data.json
catalog_conformsTo https://project-open-data.cio.gov/v1.1/schema
catalog_describedBy https://project-open-data.cio.gov/v1.1/schema/catalog.json
identifier urn:nasa:pds:context_pds3:data_set:data_set.vl1-vl2-m-lr-2-edr-v1.0
issued 2018-06-26
landingPage https://pds.nasa.gov/ds-view/pds/viewDataset.jsp?dsid=VL1%2FVL2-M-LR-2-EDR-V1.0
modified 2020-01-29
programCode {026:005}
publisher National Aeronautics and Space Administration
references {https://pds.nasa.gov}
resource-type Dataset
source_datajson_identifier true
source_hash fcac97e8490015c845f8f639e220c6d7e94013dc
source_schema_version 1.1
theme {"Earth Science"}
Groups
  • AmeriGEOSS
  • National Provider
  • North America
Tags
  • amerigeo
  • amerigeoss
  • ckan
  • geo
  • geoss
  • mars
  • national
  • north-america
  • united-states
  • viking
isopen False
license_id notspecified
license_title License not specified
maintainer Thomas Morgan
maintainer_email thomas.h.morgan@nasa.gov
metadata_created 2025-11-21T01:29:58.878034
metadata_modified 2025-11-21T01:29:58.878039
notes The Labeled Release (LR) instrument on each Viking Lander operated throughout the Primary Mission and continued into the Extended Mission. The basic analysis cycle for the Labeled Release experiment was to deliver a sample of martian soil to one of four test cells, seal the cell and moisten the soil with an aqueous solution of carbon-14 labeled organic media. A second nutrient injection was typically done about 7-8 Mars days after the first injection. The test cell was continuously monitored for the release of radioactive labeled gas as an indicator of heterotrophic metabolism. Viking Lander 1 (VL1) conducted four analysis cycles with two nutrient injections for cycles 1, 2, and 4 and three injections for cycle 3. Viking Lander 2 (VL2) conducted five analysis cycles. The first four cycles had two nutrient injections each, and the fifth cycle had one injection [LEVIN&STRAAT1976B
num_resources 0
num_tags 10
title VL1/VL2 MARS LABELED RELEASE V1.0