B6-1. Dust physical, chemical and electrical 2A High properties B6. Atmospheric ISRU 2A Low B6-2. Dust column abundances 4B Low B6-3. gas abundances 3D Medium B7-1. Regolith physical properties and structure B7. Landing Site 3E Medium B7-2. Landing site selection and Hazards 3E Low B7-3. Trafficability 5 High D1-3. Hydrated mineral compositions D1. 5 High D1-4. Hydrated mineral occurrences Resources 5 Medium D1-5. Shallow water ice composition and properties 5 Medium D1-6. Shallow water ice occurrences The mission types were assumed to follow a defined order, with missions to Mars orbit or Phobos/Deimos optionally happening before missions to the Martian surface. Sustained human presence was assumed to happen long after the first missions to the Martian surface. Therefore, in setting the priorities in this document, timing also was considered (in addition to the P-SAG priorities) to set the 5 priority levels of Investigations used in this section of this document. Table IV–3 shows the mapping of the P-SAG priorities and timing into the priorities in this document. GFAs needed earlier occur at higher priority than those needed later. All of the items related to Goal IV+ occur at priority 5 due to the late nature of the need for this information. Table IV-3: Investigation priority levels mapped to Timing and Priority for individual Gap-filling Activities. The numbers in the table relate to the 5 Investigations in Objective A, which follows. Priority: High Low Medium Timing IV- 1 3 4 IV Early 1 3 4 IV Late 2 3 4 IV+ 5 5 5 Note that in this document assignment of a specific to a priority level is based on “Investigation” the highest priority Gap-Filling Activity within that Investigation. No attempt was made to order investigations within each priority level; for instance, Investigations 1A and 1B are judged to be of indistinguishable highest priority.
2A High B6. Atmospheric ISRU B6-1. Dust physical, chemical and electrical properties 2A Low B6-2. Dust column abundances 4B Low B6-3. gas abundances 3D Medium B7. Landing Site and Hazards B7-1. Regolith physical properties and structure 3E Medium B7-2. Landing site selection 3E Low B7-3. Trafficability 5 High D1. Resources D1-3. Hydrated mineral compositions 5 High D1-4. Hydrated mineral occurrences 5 Medium D1-5. Shallow water ice composition and properties 5 Medium D1-6. Shallow water ice occurrences The mission types were assumed to follow a defined order, with missions to Mars orbit or Phobos/Deimos optionally happening before missions to the Martian surface. Sustained human presence was assumed to happen long after the first missions to the Martian surface. Therefore, in setting the priorities in this document, timing also was considered (in addition to the P-SAG priorities) to set the 5 priority levels of Investigations used in this section of this document. Table IV–3 shows the mapping of the P-SAG priorities and timing into the priorities in this document. GFAs needed earlier occur at higher priority than those needed later. All of the items related to Goal IV+ occur at priority 5 due to the late nature of the need for this information. Table IV-3: Investigation priority levels mapped to Timing and Priority for individual Gap-filling Activities. The numbers in the table relate to the 5 Investigations in Objective A, which follows. Priority: Timing High Medium Low IV- 1 3 4 IV Early 1 3 4 IV Late 2 3 4 IV+ 5 5 5 Note that in this document assignment of a specific “Investigation” to a priority level is based on the highest priority Gap-Filling Activity within that Investigation. No attempt was made to order investigations within each priority level; for instance, Investigations 1A and 1B are judged to be of indistinguishable highest priority.
MEPAG%20Goals_Document_2012_v7_2014-09-24.docx