Summary
of Proposed Field Work
RTZ7
& RTZ8 |
(1997-98
& 1998-99) |
Project
Information Package |
WMB
(previously MBL in RTZ7, WFR in RTZ8) |
| **
some changes were made in this survey during RTZ8 (1998-99) |
| RTZ7: | |
| Principal Investigators: | |
| Bruce
P. Luyendyk Institute for Crustal Studies 1140 Girvetz Hall University of California Santa Barbara, CA 93106-1100 luyendyk@crustal.ucsb.edu |
Christine
H. Smith |
| Project objectives: |
| 1. Study of the boundary between the Ross Sea Rift and the Marie Byrd Land volcanic province. |
| 2. Determine Cenozoic tectonic history. |
| 3. Determine if Neogene structures controlling glacier outlet flow developed during Cenozoic rifting on eastern Ross Rift Margin or within the volcanic province in MBL. |
| 4. Produce maps of ice thickness over the study region in western MBL to map basement topography. |
| 5. Produce maps of basement geology and structure, including faults and volcanic centers for regions buried by the ice sheet. |
| 6. Differentiate and determine relative and absolute ages of tectonic events identified during geologic mapping |
| 7. Determine Cenozoic tectonic setting of wMBL |
| 8. Identify, map, and date glacial geology features to begin to link tectonics and ice sheet development. |
| Summary from SOAR proposal response: |
| 1. SOAR will provide reduced transect products including surface elevation, ice thickness, base-corrected magnetic field strength and free-air gravity registered to differential carrier-phase GPS positions. |
| 2. The field area is subdivided into 9 blocks over which SOAR will be conducting surveys. During the 1997-98 field season surveying will take place over blocks labled WFR/SW and WFR/WC. |
| a. WFR/SW covers approximately 111.3 km x 111.3 km with 5.3 km separating transects |
| b. WFR/WC covers approximately 164.3 km x 111.3 km, which will be flown primarily with 5.3 km between transects. The northwestern portion of the survey will be flown with 10.6 km between transects. |
| Flight Information: | |||||||||||
| A. WFR Flight Targets: There are 9 blocks targeted for survey. WFR/SW and WFR?WC will be surveyed during the 1997-98 field season. | |||||||||||
| WFR/SW is a 105 km x 105 km grid with northing lines separated by 5 km and easting separated by 15 km. | |||||||||||
| WFR/WC is a 105 km x 155 km grid with northing lines separated by 5 km in the southern part f the block and 10 km in the north. Lines of easting are separated by 15 km. | |||||||||||
| B. Coordinate System: | |||||||||||
| Coordinate System | Lambert Conic Conformal | ||||||||||
| Grid Origin Lat. Long (deg) | -156, -78 | ||||||||||
| Grid Origin Shift X,Y (m) | 208311.0, 445200.0 | ||||||||||
| Grid Rotation (deg) | 47.386 | ||||||||||
| Standard Parallels (deg) | -77.0, -79.0 | ||||||||||
| Semi-major, semi-minor axes (m) | 6378137.0,6356752.3141 | ||||||||||
| C. Elevations: Surveys will be flown 350 m above the highest elevation in each block. | |||||||||||
| WFR/SW: | 900m = 2950' | ||||||||||
| WFR/WC: | 900m = 2950' | ||||||||||
| D. Radar Resolutions: Radar resoultions will be 20 ns everywhere, 2048 stacks, with 80 microsecond records (40 microsecond records over IPB). | |||||||||||
| E. Radar Blanking: No radar blanking necessary. | |||||||||||
| F. Radar Altimeter: Used at pilot's discretion. | |||||||||||
| G. Extended Run-ins and Run-outs: 15.9 km run-ins and run-outs with explicit waypoints for all transects and midpoints for long transects. | |||||||||||
| H. Communication of Flight Plans: Designated Point of Contact between pilots and SOAR (either JLW or SLM). | |||||||||||
| I. Flight Sequencing: Schduled as weather permits. | |||||||||||
| J. Flight Times: Flight windows have been established consistent with low magnetic noise periods. Flight windows at 1:30am, 7:30am, and 1:30pm (local time). Windows are approximately 5 hours long. | |||||||||||
| K. Flight Planning Documents: Flight planning documents will be prepared by JLW or SLM and distributed to flight and ground crews prior to each filght. Copies of all flight plans are saved as part of SOAR flight logs. | |||||||||||
| L. Reflight Criteria: Flights will occur in sequence until the project is completed. If good quality data is collected in less than the designated number of flights, SOAR will move on to the next project. Reflights will take place during the remainder of the project. | |||||||||||
| M. Weather Contingencies: Given bad weather, a single jump of 2000' can be made during a transect to avoid icing. If clouds interfere with collection of laser data (where laser data is essential), the flight will be aborted. Flights within a set where laser is essential will be given first priority, secondary priority will be given those where laser acquisition is possible. When too many clouds, but still able to fly, plans will include those areas where the survey is laser insensitive. | |||||||||||
| N. Leap Second: n/a | |||||||||||
| O. FOP/EDS interface | |||||||||||
| P. Gravity Ties: Gravity data will be collected at Down B and South Pole, then back to Down B during the South Pole site visit. Gravity data will also be collected at Siple Dome, Down B, and back at Siple Dome in a single day, if possible. | |||||||||||
| Q. Base Station Issues: Siple Dome will be the base of operations. Down B. will serve as a secondart base station. | |||||||||||
| R. QC Review: Data will be broken out immediately after a flight. Each flight line will be given an initial review and rated for overall data quality by JLW or SLM. Determination if reflights are required will be made at that time. Science observers in the field may have acces to Quality Control products. | |||||||||||
| S. GPS mask angle: 10°; if holes are introduced, decrease to 5º. | |||||||||||
| T. PST Names: Names will incorporate geography, block name and transect number as follows: | |||||||||||
|
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| RTZ8 | |
| Principal Investigators: | |
| Bruce
P. Luyendyk Institute for Crustal Studies 1140 Girvetz Hall University of California Santa Barbara, CA 93106-1100 luyendyk@crustal.ucsb.edu |
Christine
H. Smith The Colorado College 14 E. Cache la Poudre Colorado Springs, CO 80903 chsmith@cc.colorado.edu |
| Project objectives: |
| 1. Study of the boundary between the Ross Sea Rift and the Marie Byrd Land volcanic province. |
| 2. Determine Cenozoic tectonic history. |
| 3. Determine if Neogene structures controlling glacier outlet flow developed during Cenozoic rifting on easters Ross Rift Margin or within the volcanic province in MBL. |
| 4. Produce maps of ice thickness over the study region in western MBL to map basement topography. |
| 5. Produce maps of basement geology and structure, including faults and volcanic centers for regions buried by the ice sheet. |
| 6. Differentiate and determine relative and absolute ages of tectonic events identified during geologic mapping. |
| 7. Determine Cenozoic tectonic setting of wMBL |
| 8. Identify, map, and date glacial geology features to begin to link tectonics and ice sheet development. |
| Summary from SOAR proposal response: |
| 1. SOAR will provide reduced transect products including surface elevation, ice thickness, base-corrected magnetic field strength and free-air gravity registered to differential carrier-phase GPS positions. |
| 2. The field area is subdivided into 9 blocks over which SOAR will be conducting surveys. During the 1997-98 field season surveying will take place over blocks labled WFR/SW and WFR/WC. |
| a. WFR/SW covers approximately 111.3 km x 111.3 km with 5.3 km separating transects |
| b. WFR/WC covers approximately 164.3 km x 111.3 km, which will be flown primarily with 5.3 km between transects. The northwestern portion of the survey will be flown with 10.6 km between transects. |
| Flight Information: | ||||||
| A. WFR Flight Targets: 6 blocks will be surveyed N, C, S, E, SE, and W. | ||||||
| WMB/N, WMBC/, WMB/S, and WMB?E are 2 degree by 1 degree grids with 10.6 km spacing between lines. | ||||||
| WMB/SE is a 1 degree by 1 degree grid with 5.3 km spacing between lines. | ||||||
| WMB/W is a 2 degree by 1 degree km grid with x-lines spaced 5.3 km apart, and y-lines spaced 10.6 km apart. Even number x-lines will be flown as extensions to transects in the C and S blocks. | ||||||
| B. Coordinate System: | ||||||
| Coordinate System | Lambert Conic Conformal | |||||
| Grid Origin Lat. Long (deg) | -156, -78 | |||||
| Grid Origin Shift X,Y (m) | 208311.0, 445200.0 | |||||
| Grid Rotation (deg) | 47.386 | |||||
| Standard Parallels (deg) | -77.0, -79.0 | |||||
| Semi-major, semi-minor axes (m) | 6378137.0,6356752.3141 | |||||
| C. Elevations: Surveys will be flown 350 m above the highest elevation in each block | ||||||
| WMB/N: | 1225m = 4000' | |||||
| WMB/C: | 1500m = 4900' | |||||
| WMB/S: | 1600m = 5300' | |||||
| WMB/E: | 1850m = 6100' | |||||
| WMB/SE: | 2300m = 7600' | |||||
| WMB/W: | 1225m = 4000' | |||||
| D. Radar Resolutions: Radar resoultions will be 20 ns everywhere, 2048 stacks, with 80 microsecond records | ||||||
| E. Radar Blanking: No radar blanking necessary. | ||||||
| F. Radar Altimeter: Used at pilot's discretion. | ||||||
| G. Extended Run-ins and Run-outs: 15.9 km run-ins and run-outs with explicit waypoints for all transects. | ||||||
| H. Communication of Flight Plans: Designated Point of Contact between pilots and SOAR (either JWH or RRB). | ||||||
| I. Flight Sequencing: Scheduled as weather permits. | ||||||
| J. Flight Times: Flight windows have been established consistent with low magnetic noise periods. Flight windows at 1230-1700 GMT, 1830-2300 GMT, 0100-0530 GMT. No fly Period 0600-1200 GMT. Windows are approximately 5 hours long. | ||||||
| K. Flight Planning Documents: Flight planning documents will be prepared by JWH or RRB and distributed to flight and ground crews prior to each filght. Copies of all flight plans are saved as part of SOAR flight logs. | ||||||
| L. Reflight Criteria: Flights will occur in sequence until the project is completed. SOAR will survey the corridor until the end of the time allotted for use of SDM and FRD resources. | ||||||
| M. Weather Contingencies: Survey will continue with 1000' jumps (up to 14,500') to avoid icing. A single descent of 1000' in a transect is possible if obvious the remainder of the transect is clear. | ||||||
| N. Leap Second: There is a leap second January 1, 1999, during a no-fly window. Acquisition should not be affected. | ||||||
| O. Base Station Issues: WMB will be flown out of SDM with FRD serving as a secondary base. Flight operations are expected to continue for three days at a time out of FRD. | ||||||
| P. QC Review: Data will be broken out immediately after a flight. Each flight line will be given an initial review and rated for overall data quality by a member of the Experiment Design group or other trained personnel.. Determination if reflights are necessary will be made at that time. Science observers in the field may have acces to Quality Control products | ||||||
| Q. GPS mask angle: 10°; if holes are introduced, decrease to 5º. | ||||||
| R. PST Names: Names will incorporate geography, block name and transect number as follows: | ||||||
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