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DC-8 - AFRC 11/10/18 - 11/11/18

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Flight Number: 
Payload Configuration: 
OIB 2018 Configuration - ATM-Cambot, ATM-GPS/ATM-NAV, ATM-FLIR, ATM-T6, ATM-T7, Gravimeter, MCoRDS, UWB Snow RADAR, and piggybacks ARMAS & Tinman
Nav Data Collected: 
Total Flight Time: 
10.6 hours
Flight Segments: 
Start:11/10/18 13:29 Z Finish:11/11/18 00:05 Z
Flight Time:10.6 hours
Log Number:198006PI:Joseph MacGregor
Funding Source:Bruce Tagg - NASA - SMD - ESD Airborne Science Program
Purpose of Flight:Science
Comments:The NASA DC-8 OIB team completed the low priority Foundation Lakes IS-2 mission today. All OIB remote sensing instruments operated nominally (except for an IR imaging spectrometer data gap). The aircraft returned to Ushuaia with no writeups.
Flight Hour Summary: 
Flight Hours Approved in SOFRS345.8
Total Used292.8
Total Remaining53
198006 Flight Reports
Date Flt # Purpose of Flight Duration Running Total Hours Remaining Miles Flown
10/10/18 - 10/11/181291Science11.527318.80
10/11/18 - 10/12/181292Science11.638.6307.20
10/12/18 - 10/13/181293Science11.349.9295.90
10/13/18 - 10/14/181294Science10.760.6285.20
10/15/18 - 10/16/181295Science11.171.7274.10
10/16/18 - 10/17/181296Science10.181.82640
10/18/18 - 10/19/181297Science11.192.9252.90
10/19/18 - 10/20/181298Science10.8103.7242.10
10/20/18 - 10/21/181299Science10.7114.4231.40
10/22/18 - 10/23/181300Science11.1125.5220.30
10/27/18 - 10/28/181301Science11.3136.82090
10/30/18 - 10/31/181302Science11.7148.5197.30
10/31/18 - 11/01/181303Science11.3159.81860
11/03/18 - 11/04/181305Science11171.4174.40
11/09/18 - 11/10/181309Science11.1214.1131.70
11/10/18 - 11/11/181310Science10.6224.7121.10
11/14/18 - 11/15/181313Science11.2257.488.40
11/16/18 - 11/17/181315Science10.1277.8680

Flight Reports began being entered into this system as of 2012 flights. If there were flights flown under an earlier log number the flight reports are not available online.

Related Science Report: 

OIB - DC-8 - AFRC 11/10/18 Science Report

Mission Summary: 

Mission: Foundation Lakes IS-2
Priority: Low
This flight is a dh/dt repeat of the identical 15 October 2012 flight. It occupies straightened approximations of the Foundation and Support Force ice streams, and crosses several subglacial lakes in their upper portions. Many of the original lines were redesigned for 2018 along ICESat-2 ground tracks. For these tracks, we specifically target the strong beam of the center beam pair.
Another challenging weather decision today, which forced us back to the Ronne-Filchner Ice Shelf after a length consideration of West Weddell. We started out nicely with a ramp pass at 1500’. During the transit to the survey area, we determined that one of the ICESat-2 tracks we would fly (RGT 628) across upper Support Force Ice Stream would be fairly low latency, as ICESat-2 surveyed it only 2 days ago, somewhat elevating the value of the mission. We offset this track to account for our best present understanding of the ICESat-2 offset. The survey then proceeded uneventfully, but with new views of the north end of the Pensacola Mountains, and the shear zone where one of Foundation Ice Stream’s tributaries meets its main trunk. We flew slightly slower (250 kts) than we have been lately over the two downstream sections of both ice streams, so as to maximize the quality of the gravity data over the grounded-to-floating ice transition. All instruments reported another great day, with 100% data collection. Thomas Prior, a photographer from National Geographic joined us again.
For the four ICESat-2 RGTs we surveyed today (2 Foundation, then 2 Support Force), their latencies were:
RGT / Latency (days, positive = OIB underflight ahead of ICESat-2)
1290 / +42
278 / -25
628 / -2
375 / -18
Attached images:
1. Map of today’s mission (John Sonntag / NASA)
2. Subglacial trough and layering within Foundation Ice Stream (Hara Madhav Talasila / CReSIS)
3. DC-8 chasing its shadow up a tributary of Foundation Ice Stream, with Pensacola Mountains in background (Joe MacGregor / NASA)
4. Crevasse field on Foundation Ice Stream (Carl Sorenson / NASA)
5. Dufek Massif and Cordiner Peaks (John Sonntag / NASA)
6. Ushuaia, Argentina, following take-off (Carl Sorenson / NASA)


Subglacial trough and layering within Foundation Ice Stream

DC-8 chasing its shadow up a tributary of Foundation Ice Stream, with Pensacola Mountains in background

Crevasse field on Foundation Ice Stream

Dufek Massif and Cordiner Peaks

Ushuaia, Argentina, following take-off