
Field Notes
Robotic Search for Antarctic Meteorites
Patriot Hills 1998 Expedtion
The 1997-98 field season in Patriot Hills, Antarctica, proved
quite useful for the field team members and the project in general.
There was a lot to be learned through first-hand experience in
Antarctic conditions, working with experts in Geology and Planetary
Science, observing the logistical support and resources provided by
Adventure Network International (ANI), and conducting experiments and
component tests. This document will outline experiences in the field
and some of the important lessons learned.
Before leaving
- More "relevant" pre-deployment ORT (Operations Readiness Test).
Blue Knob was about weather, but there were far more issues to look
at. That field day did not point out to us that there was a need for
two small generators, for example. For next year, maybe a one week
pre-deployment test in the field with the robot and field team in a
remote location, to see what we forgot or really need.
- Carefully plan and allocate resources. One small oversight can affect
everyone else's work. Document resource allocation and follow it. Plan
for contingencies such as changes in resources. Keep updates on current
state of resource plans. We had a meeting on resource requirements but
then never made any final decisions on resource availability and
allocation.
- One essential resource to be planned is Nomad time allocation. This
will be tricky. Should probably schedule 12 hours of work per day and
work for 24 whenever possible. Can even schedule to have people working
with the robot 24 hours per day and living on a rotating sleep schedule
type of arrangement.
- Contingency planning. What would you do with XYZ resources. What
happens if you only have X, etc. That way, when the situations arise we
are prepared and not forced into panic mode. This cuts both ways, of
course, since you can waste a lot of time planning for unlikely
contingencies, but we should have had a plan for working with only one
skidoo or no skidoos.
- Same old problem: lack of ommunication between people.
- PR stuff is necessary: Flags, patches, stickers (various reasonable
sizes), information brochures, etc. Never know who you will need to
discuss the project with and these things help greatly.
- First aid training for every field team member is NECESSARY. The
Garriot group had a broken collar bone happen rather innocently and
rather soon after arrival. Liam and I spent ten days in a field camp
about 8 km from Patriot Hills, about an hour away from medical
assistance at best, and often also about a half hour or forty minutes
away from our shortwave radio, which would be needed in order to get
that help.
ANI Personnel and Facilities
- Punta: Ann, Faye, Leslie, and Rachel. Ann is managing
director of ANI. Faye handles accounts. Leslie handles client
relations, such as booking our flights back to PGH. Rachel handles
logistics for insertion.
- Patriot Hills: Steve Pinfield, Camp Manager. Steve basically directs
all ANI staff and contracted support staff in Patriot Hills.
- Hercules C-130 flights into Antarctica, chartered through SAFAir out
of South Africa. 1700 km, 6 1/2 hour flight into Patriot Hills. Craft
lands on wheels on a 2 km long blue ice runway. Weather must be
exceptionally clear for the Herc to come in, giving rise to the term
"Herc weather." Landing on the blue ice is decidedly rougher than
landing on a concrete runway in a 747, but not bad. Fuselage is
pressurized, and comercial airline style seats have been added, so it is
not a bare-bones military style flight, really.
- Two Twin Otter aircraft. Planes, pilots, and crew are all contracted
through Ken Borek Air, in Calgary, Alberta, Canada. Takeoff and landing
are done using skis on a snow runway (skiway). Twin otter flights
primarily serve to shuttle climbers to Vinson Massif, tourists to South
Pole, and to extract expeditioners in emergency or upon completion of
trek.
- Cessna flights, also supported through Ken Borek and operated from
skiway. Cessna flights are available on a per hour flight time basis
and allow more flexibility in landing sites, etc. Alex, Bill, and
Pascal used a little over one hour of Cessna time to search the region
for promising blue ice areas.
- Kitchen: Next most important thing is eating. The kitchen tent is
constructed out of four Polarhaven tents connected in a long line. Two
cooks, Mike Holmes and Fran Orio, cooked three meals a day, for anywhere
between three and 50 clients in addition to the staff. We were also
able to go and eat whatever we could find between meals, which was
important since we often slept through breakfast and ate late at night.
- Field guides: Simon Garrod at PH base camp guides field expeditions
and acted as our field guide for the duration of our stay. Dave Hahn at
Vinson guides mountaineering expeditions. Lisa Holiday acts as a field
guide near base camp in addition to client relations in PH. Also, Peter
and Mike Sharp (Polar Logistics).
- Pilots: Maxo Weldon flies the Cessna and guides flying expeditions
including Cessna trips to Pole. Ken Borek pilots Steve King and Jim
Haffe, along with KB mechanics Lionel and Billy support all twin otter
flights.
- Skidoos: Art Mortvedt, long time bush pilot and veteran of Arctic and
Antarctic field work. Art runs a wilderness lodge at 67N in Alaska, and
has spent many years with AREA research in the Arctic, and is an all
around great guy. Maintains all ANI snowmobiles. They have about 8
skidoos, including 4 Yamaha, 2 Arctic Dogs, and 2 Skandics. Thier
skidoos appear to be in in precarious condition, an observation
confirmed by some off-the-record comments from [unnamed] ANI staff and
contractors.
- Radio Communications: Doug Woods, veteran of wilderness communications
issues. ANI operates HF radios for communication with ANI in Punta as
well as Vinson Base, South Pole, expeditioners, and field camps (Liam
and I). HF is used extensively while the Herc is in the air, with
constant communication between Punta and SAFAir during flight with
relays and updates to PH from Punta. Also VHF for camp communications
mostly between radio tent and kitchen tent.
- Power generation: Doug wears two hats. ANI operates a 1 kW (@ 28
Knotts) wind generator which supplies them with more power than they
need. Lead acid batteries are continually charged and radios and
computers run off inverters connected to the batteries. Solar panels
are also used to charge hand held VHF radio NiCads. One 1 kW gasoline
generator is used as backup in the event of a long period of clouds and
calm wind.
- Weather Observation and Forecasting: Alexandro Parada, Meteorologist
from Uraguay Army. NOAA satellite weather data downloaded periodically,
and local observations made at PH camp, PH runway, Vinson Base, McMurdo,
and South Pole. Observations and satellite images are used to make
weather predictions which are usually accurate for 6-12 hours.
Apparently satellite receivers and NOAA software is available to the
public and is used by many avocational pilots and sailors.
- Medical: Dr. Kate Brown, GP from Australia is the medical team. I
never actually saw the medical tent, but there is basically a limited
supply of emergency medical essentials to cover broken bones, altitude
sickness, etc.
Environmental conditions
- First thing to note: Conditions were unusually favorable even for
Patriot Hills standards. According to ANI staff, this was a
particularly good season for weather.
- Patriot Hills climate was much more mild than I expected. Air
Temperature was typically 0 to -5 C, occaisionally down to -10 C.
Lowest temperature I actually measured was -12 C. Alex's notes say it
went down to -15, but I don't know whether this came from ANI weather
observations/logs or not.
- Winds were typically about 10 to 20 knotts, with occaisional gusts of
60 knotts or more, so windchills reached extreme cold. According to Ann
Kershaw, gusts can reach 100 knotts.
- Conditions are typically stable, sunny sky stays sunny for a long
time. Cloudy overcast sky stays cloudy for a long time. However,
exceptions to the rule can be extreme as well. We had a whiteout blow
in and the storm front itself must have been moving at about 40 to 60
kilometers per hour. I don't know whether the whiteout was predicted,
but it surprised us and overtook us while we were coming up to base camp
from the PH moraine.
- Conditions were typically warm and sunny, but a few overcast periods
occurred as well. On January 6th, a whiteout hit that stayed for about
5 days, during which little got done.
- Weather prediction is possible, forecasts can be reasonably accurate
for 12 hours ahead. ANI's Alexandro had weather reports about twice a day and
had more than that when the Herc was scheduled. Weather forecasts were
done using satellite images and local observations on conditions at
Patriot Hills, Vinson Base (from climbers too), McMurdo, South Pole.
- Steve Pinfield's opinion was that ANI does not need a meteorologist,
and that they can simply make their own observations and predict weather
6 hours ahead well enough to make decisions on Herc flights.
- Extreme cold and wind was balanced by days of near 0 temperatures,
cloudless skies, and calm air, feeling warmer than typical Pittsburgh
winter weather.
- Conditions in the valley between Patriot and Independence Hills were
similar, although conditions near the moraine were always much more
windy, usually a factor of about 1.5 higher.
- We should have photocopies of hourly weather condition reports for the
duration of our stay in Patriot Hills. Observations were made by ANI
staff and recorded continuously.
- We also have 800 megabytes of NOAA satellite image data from the camp
meteorologist. These may be of dubious utilty, but they were relatively
easy to obtain and we have them if anyone is interested in seeing them.
Feasible to have our own satellite receiver for weather monitoring? (Alex)
- Lighting: All day sun, very bright. I ended up using the ND 2.0
filter all the time. CCD cameras require either extremely small
aperatures (f16 too large) or dark filters. Glare is high, it is very
diffiult to see TFT displays.
- Surface conditions vary greatly. Blue ice is hard and slick, and has
the surface texture of an ocean or lake on a windy day. On warm days,
the top surface of ice melts slightly and becomes very treacherous to
walk on without crampons.
- Sustrugi are hard packed snow dunes. Bicycle tires would often punch
through the surface, but usually the sustrugi will hold a person waking
on them just fine.
- Snow drifts accumulated after the whiteout around January 5th. Drifts
were light and compactable, and very loose since they were well frozen
and did snow did not pack together. Difficult to walk through, and
impossible to bike through.
- Moraines consist of very thin layers of rock deposited on ice. Often
the surface of the moraine is at a very steep angle. Walking on these
slopes of loose rock can be difficult even with crampons since the rocks
slide out from under your feet.
- Blue ice along the North side of the Patriot Hills consists of rolling
hills of ice sloping down sharply into a sun cup, with slopes of about
20 to 30 degrees. The ice flattens into refrozen melt pools, where the
surfaceis more like an ice skating rink or frozen lake, then rises to a
moraine. About 500 meters to 1 km away from the actual hill the blue
ice has crevasses with openings ranging from about 2 cm to maybe about a
meter, with a sort of 1/f distribution.
- The South side of the Patriot Hills is heavily drifted in and
crevassed. Looking for meteorites here is pointless, of course, as
well as being very dangerous.
- Blue ice along the North side of the Independence Hills is flat,
rising to a ridgelike moraine, with a steep slope of about 35 to 45
degrees. The top of the ridge is characterized by piles of loose slate
and very high winds. The moraine consists of very loose rock, largely
slate, and is extremely difficult to walk on. The moraine slopes down
to a blue ice field scattered with rocks, then to a sun cup similar to
the Patriot Hills and then a rising moraine.
- The South side of the Independence Hills is an ice plateau. The
plateau was visited by Bill, Pascal, and Alex, who found no
meteorites but surely got a nice perspective of the Horseshoe Valley.
The site is not promising, and it logistically difficult to visit,
requiring either a long (three hour?) skidoo ride or a Cessna flight.
- Little precipitation observed, although often airborne snow occurs in
the form of low sweeping drifts. The blowing snow can be difficult to
work in, especially in high winds (feels like being sandblasted) or low
to the ground (generator shelter top was at around ground level).
- Crevasses are dangerous, but may be detectable by radar. Crevasses on
blue ice can be easy to see, but crevasses near drifted snow can be
pretty impossible to detect.
- Low altitude and warm temperatures are likely causes for lack of
meteorites. Cryochonite holes may trap meteorites several centimeters
below the surface of the ice.
- Conditions near the hills and moraines can be significantly different
(i.e. more windy) than conditions 1 or 2 km away.
Working in the conditions
- Crampons are necessary for work on blue ice.
- Stabilizers (similar to crampons, but with more, smaller spikes) seem
to be of questionable utility on blue ice, and bad for moraines.
- Good glacier glasses are key. I did not have a pair and often had
bright light coming in around the sides of my glasses. The sky is often
bery clear and the sun very bright, and the UV in Antarctica is high.
- Good to stay a little warmer than necessary. When the body is warm it
dumps heat into the head and hands to radiate, keeping hands warm. If
your core gets cold, the hands get cut off and will get very cold.
- 24 hour daylight and good weather combine to make keeping a regular
schedule difficult. Tend to work late and miss breakfast. Liam and I
were particularly bad with that over at IH since we depended on noone or
meals or wakeup calls. Missed radio scheds regularly.
- Performance is greatly reduced. Physical effort exerted is greater
due to resistance of gear, dealing with wind, etc. Time is spent trying
to keep wind off your face or keep your hands warm.
- Consider whiteouts. Can't get anything done or go anywhere.
- Difficult to see laptop screens, and things in shade. Requires taking
lenses on and off to see without blinding yourself when you are not
looking at the screen or shaded objects.
- Hard to sleep with light. Personally, I had no trouble with this, but
others did. Perhaps eye masks would help. Reduced sleep impinges on
work efficiency.
- Need big buttons, way too hard to type on a keyboard. Optimize
interface to use gloved.
- Take notes with a tape recorder. Excellent idea.
- Camcorder was effective for documentation. Smaller camcorder would be
much nicer.
- Minimize tasks which require manual dexterity.
Vehicle Comm
- Use audible feedback from system, instead of visual. Maybe radio
wireless headset with Nomad to combat noise level.
- Slopes near PH and IH moraines block LOS to base camp. No VHF comms
with base camp from more than 1 km away, until you get out to the
Independence Hills moraine, where occaisionally just the right cloud
cover exists to bounce signals at a shallow angle (since it's about 8-9
km away) down to the radio tent, but only the ANI radio tent radio was
sensitive enough to get them. Shortwave would offer more reliable comms.
- Alex points out that comm problems (loss of LOS) are similar to
experiences in Atacama, and that the dGPS currently relies on LOS for
correction signals and could not get a signal more than a kilometer
away.
- Even if we get direct sat com from the rover to the States, we will
want to send telemetry to the base camp, so we need to have some
reliable comm.
- Iridium or something similar would require two tranceivers and allow
direct control of the rover from USA and also through a field camp
control station.
Personal Comm
- Headsets for radios. Too difficult to keep mic on clothing or to
keep it inside clothing where one must open jacket to use radio.
- Voice operated microphones so that you don't need to operate a contact
switch in order to communicate.
- VHF only works reliably for team comms within a small area where all
have line of sight to other members of the party.
- HF was necessary for Independence Hills Science Camp, and allowed
communication with Vinson base directly. Could enable direct comm to
Theil Mountains and even South America.
- Personally I think HF may be an interesting way for the robot to
transmit low data rate information, like just a heartbeat or other
status signal as a backup to high BW comm.
Implications of weather on electronic devices
- Screen warming turns out to be a non-issue. Laptops appeared to work
outside with no trouble for the most part. Hard drives, however, are
fragile and affected by cold. Kurt's died. Liam's had trouble starting
at times. Chemical warming pads helped Liam's hard drive. Also crashed
a PCMCIA hard disk.
- Heat tape works extremely well. Warmed the Dalsa effectively and kept
the LCD screen working. Good idea to wire heaters to a power source
independent of other devices to warm things before turning them on.
- Drifting snow was never a problem with electronics or other devices.
Pano had no snow accumulation. Solar had none. Liam's solar panels had
some drifting snow accumulating on them but they were in a particularly
bad spot for drifting.
- Drifting snow will be a problem for Nomad if it sits still for any
period of time. Powering out will be difficult. As long as Nomad can
keep moving under heavy airborne snow and wind, it will be OK.
Implications of environment on robot design
- Terrainability requirements. Nomad may be required to traverse
moraine areas to search for meteorites, and that will require travelling
on loose rock on ice. Nomad will not be able to climb the moraine,
however, since it is even difficult for effecient walking machines
(us). Pascal thinks that traversing moraines will be required. Alex
would like to see the robot climb the steep moraine. I would be happy
to keep terrainability tractable and stay on blue ice.
- Autonomous traverse of the north side of the IH Moraine to the end,
and up the south side into the blue ice lagoon. This will retrace some
of Liam's path taken with the spectrometer sled.
- Effeciency of wheels and tracks on the surface conditions.
- Patriot Hills blue ice field crevasses appear to be filled with very
hard-packed snow, which Alex calls "safe," although you won't catch me
jumping on it. Alex feels that these crevasses offer a great
opportunity to test subterraneous obstacle detection with crevasses that
look just like dangerous ones to the radar but won't suck in Nomad if it
drives over them.
Camp Setup / Life
- Liam had troubles with the Thermarest, and thinks that a foam mattress
would be more reliable since it cannot be punctured.
- We should have brought a coffee machine.
- Would be nice to have a water heater, at least to keep melted water.
- Bring a radio.
- Shortwave transciever is an essential piece of survival gear and also good
for entertainment. For entertainment, a receiver would suffice and
could be part of the radio mentioned above. For survival gear or field
equipment, obviously a tranceiver is necessary.
- Coleman Dual Fuel stove was difficult to use and eventually was used
as a base and windscreen for an MSR stove. Burning unleaded in a
stove in an enclosed environment proved to be pretty stinky. Burning
white gas would be OK, but not unleaded. The coleman can burn indoors
but not the MSR.
- Caribiners, harnesses, and ropes were pretty useless. We used biners
as hooks and hooks would have been nicer and cheaper. The harnesses and
ropes were never opened and have been cached for next year.
- Tables and shelving are necessary. We tied up a crate lid to the
Polarhaven internal frame, and used crates as tables along with a
plastic table borrowed from FACH.
- Rubbermaid boxes were nice for organizing things, but were allocated
for rock samples. Need more for personal gear and organizing other
things.
- Whiteboard. Calendar. Posters?
- Cleaning supplies. Rags. Paper towels. Hand cleaning creams.
Supplies to clean generators, laptop screens, etc. Kimwipes. Laundry
detergent. Facial tissues. I had a runny nose all month.
- Bamboo cane is essential for markers, tent pegs, etc. Metal tent pegs
tend to warm up in the sun, melt the snow around them, and pull out.
Long poles are useful to mark a trail between camp sites or work sites
and camp in case of loss of visibility. Bamboo cane can be cut into
smaller pieces if necessary.
- Bicycles were of limited utility. Blue ice travel is difficult due to
strong gusts of wind. Sustrugi are passable with deflated tires, but
deflated tires cause even more problems on ice. Drifted snow is
impossible because of sinkage of tires. Flat tires work better on snow
due to flotation and worse on ice due to low stud contact force.
- Space for generators that won't fill with snow. Generators melted
their way down into the snow and broke the crate they were in and also
got covered with snow regularly. Possible to put a tent up for the
generator? Plywood floor necessary for generator shelter. Possibly the
ANI latrine style shelter would suffice.
- Bring another small generator.
- UPS is necessary. Brief outages brought down Atacama several times.
Solar panels charging batteries may suffice for power production.
- Jerry can nozzle tool. Too difficult to attach and remove nozzles.
Wider nozzles would facilitate better fluid flow as well.
- Plywood floor for Endurance tent. The tent floor ended up very uneven
and bumpy due to melting and pressure of cot legs, people, etc.
- Alternative power sources deserve some investigation. ANI powers
their entire camp with solar panels and wind generators. Of course,
their power needs are not what ours were or are likely to be, but it is
still feasible.
- Solar power may suffice for laptops, but requires good sunlight and
pointing.
- Four fit OK in the Endurance tent.
- Six would fit OK in the Polarhaven.
- Endurance for workspace, Polarhaven for Nomad. Need much more
sleeping space, but we can use FACH tents for that.
- Hard cases are useful for electronics. Pelican cases worked well for
my cameras, the VHF radios, Liam's laptop, etc.
- Lighter sleeping bags. Slept unclothed and still sweated regularly.
Possible to return bags for lighter ones?
- Work gloves. Even the wide assortment of gloves available to us was
lacking, mostly because the most popular gloves (NF Windstopper) fell
apart and required duck tape wrapped around fingers to hold togeher.
Simple $3.00 work gloves would have held better and could be used as
overgloves.
- Large wooden sled. Advantages: cheap, wide and stable, compliant,
disassembles for shipment.
- Clinometer to measure slopes of terrain better. Most of the numbers
here were generated by my own personal estimates.
- Standardize packing boxes. Find suitable flight box and use for
everything. Pack Polarhaven into several boxes not one monolithic
crate. Wooden crates are falling apart and will be full of snow when we
return.
- Bring labeling material for return.
- Laundry. It would be easier to have two changes of clothing or so and
wash them than to bring a new set of clothes for each week of
operations.
- Documentation production. Need to bring much more film. If I were to
be in charge of documentation next year, I would bring 300 rolls. Video
tape. Someone specifically in charge of documentation. (Pascal?)
Should keep Marcy Garriot in mind as well for this. She seemed very
interested, and produces documentary videos in a professional capacity.
She may even pay her own ticket just to go with us.
Field Expeditions
- Good idea is to assemble a survival pack for each person who goes on a
field trip. Compass, emergency blanket, etc. Compasses should be
weighted for high South lattitudes, since Northern hemisphere compasses
performed poorly.
- Assemble survival pack which should be taken by any group of people on
a field trip. Include maps, GPS, HF radio, etc. Some items like these
are not needed by more than one member of a team, but any team will need
at least one.
- Mark camp with bamboo cane as markers. Set up trails between work and
living sites. Familiarize everyone with camp layout.
- Leatherman tools were very useful. I used mine daily.
- Crampons are necessary for field work on blue ice.
- Chemical hand warmers worked well, but are better as a preventative
measure than a remedial one.
- Always carry a sleeping bag whenever you leave camp. You can never be
sure that you will return within the day. (Carlos)
- Always carry a book or some other reading material. You never know
when a whiteout may hit and keep you in a tent with nothing to do for
days.
- Pack extra clothing (overmitts especially) since conditions may
worsen.
- Good windproof clothing and eyewear are needed for skidoo trips. You
have to add about 20 km/hr to the wind speed and hence wind chill factor.
- Field guide is a good idea. Two possibilities exist for working with
Simon Garrod next year. One would be to hire him directly and have him
take leave of ANI for the duration of our work. The other would be to
contract ANI to give us a field guide for our work, and pay ANI.
- Power generation for field camp. Small generator or solar panels,
etc. Charging laptops, etc.
- Fit a Vinson climb into the schedule.
- Bring ice skates. (Alex) The refrozen ice melt is skatable. ANI calls it
the rink.
Resources to improve operations next season
- At least two skidoos. Redundancy adds a safety net. If we had broken
down at Minaret the cost of chartering an ANI skidoo to come rescue us
would have justified renting two skidoos.
- Independent HF (SW) Comms separate from FACH. Should be possible to
talk to PGH from Patriot Hills. Try listening on 17.____, 5026, 4500(?)
(Ask Doug)
- Jazz drives? Zip drives? The tape drive we brought had mechanical
problems.
- Packing supplies for return. Boxes, new crates? Wood and better
screws to rebuild crates we have. Rubbermaid totes.
- One unnamed field team member requests that we bring chocolate, beer,
women, and drugs. Several thought we only really needed chocolate,
beer, and women. Most agreed that we should at least have chocolate and
beer, and we were unanimously decided that there is no excuse not to
bring chocolate.
Cache
About 8 crates and one sled:
- Polarhaven: Floor, side & end walls, poles.
- 5 kW generator
- 650 W generator, 4 full jerry cans, power cords,
- Liam's battery box
- Radar sled, printer, packing foam
- 2 bicycles
- Large stoves, fuel pumps
- Camp sundries: cots, thermarests, bamboo, tent pegs, bungees, bins, etc.
- Large sled, Endurance tent, banana sled
Site Selection
- Searches: We covered areas including: Patriot Hills Moraine, Independence Hills
Moraine, Eastern Independence Hills, Minaret Bowl, ...
- No meteorites in Patriot Hills area! Same conclusion drawn by Owen
Garriot group, (representing the Planetery Studies Foundation, the Owen
Garriot Family Foundation, and the DuPont Collection).
- CMU/NASA searchers covered PH moraine, IH moraine, IH range to the
Eastern bowl, Morris Cliffs, Ice tongue and moraine, Minaret, plateau,
(what else?). After no meteorites were found at these locations, Bill
and Pascal speculate that the altitude is too low for meteorites, based
partly on the cryochonite phenomenon where rocks are warmed by radiation
from the sun and melt the ice through conduction of heat, sinking into
the melted snow which then freezes over. Meteorites deposited in the PH
region are likely melted under and very hard to find.
- On the other hand, the Garriot group searched several areas at higher
altitudes, flying all the way to Vinson Massif and stopping at several
South Face blue ice fields in the Ellsworth range. They reported lower
incidence of cryochonite melting but still no meteorites.
- Need to determine site for future expeditions:
- All of our gear is in Patriot Hills. Need to think about that cache
if we want to move sites.
- Obviously must select site with meteorites for final demos.
- Advantageous to select site based not just on where meteorites exist,
but where meteorites are easy to distinguish from terrestrial
rocks. (Pascal) Pascal seems a bit pessimistic about reaching what
appears to be our success criterion and thinks that it is narrowminded,
just like Lunar Ice. Not a borad enough and interesting enough science
goal. Broaden to "remote geologist", not meteorite hunter.
- Need to select site where logistical support infrastructure is in
place or will be in place, of course. FACH, ANI, Sanae, BAS(?),
Ansmet(?), others?
- Can we demonstrate Nomad in Patriot Hills with or without meteorites
(or with planted meteorites?) next field season and still have a
relevant field trial? In other words, is finding a meteorite part of
the success criterion for 1999 season? Surely in 2000 it is, which
means that we cannot return to Patriot Hills in two years time.
- Plan for next year: Send Nomad and robotics team to Patriot Hills, and
a small field team to another site to look for the Mecca of Meteorites.
One promising area that is reachable by twin otter from Patriot Hills is
Thiel Mountains, half way to the Pole from PH. Used as a fuel cache for
twin otter operations by ANI and FACH already. Probably no other sites
within twin otter range of PH.
- One possibility: Queen Maude Land, between about 50W and 50E
longitude, Sanae is on the coast of this region and the South Africans
believe that meteorites can be found in the region and have intended to
begin field studies. Ansmet apparently thinks the region is feasible as
well. South Africa may be amenable to helping our program, so we should
talk to Sanae as well. According to Liam, their willingness to help may
depend partly on our demonstration of our intent and qualifications.
Adventure Network International is also thinking of starting to provide
support in the region and also is interested in providing support for
research and governmental to expand client base beyond tourism. Maybe
that is a good match for us to help ANI expand and help our project
succeed.
- Other possibility: Get friendly with Ralph Harvey. Try to get Ansmet
support. It may be possible to get a CMU Robograd onto an Ansmet field
party, where that person would gain valuable experience and represent
our group to Ansmet. May open doors for collaboration through
diplomacy, and get permission to search in meteorite rich areas known to
Ansmet.
Conclusion
All experiments went well, and enough data has been collected to keep
several people busy for quite some time. ANI relations were excellent
and their logistical support did an excellent job of facilitating field
work. Some interesting relationships were formed, including unsolicited
publicity through Marcy Garriot, sharing of information and exploratory
experience in the region with the Planetary Studies Foundation, and
meeting two potential field guides, Simon and Art, should one be
required for operations next year. Doug is willing to offer some
information on both shortwave communications and alternative power
sources, as he plans to write reports for ANI internal documentation on
both subjects and I have already requested copies if the document is
actually produced. No meteorites were found, but finding out that
Patriot Hills has no meteorites was valuable and it is good to know that
constraint now, as candidate sites are already under consideration and
investigation. Conclusions will be drawn by individual experimenters on
the results of their respective field tests and experiences, and
reported shortly. Lastly, it's good to be back!
 |
Robotic Search for Antarctic Meteorites 1997
All material on this page is property of NASA and Carnegie
Mellon University. Any image or text taken from this site and pasted
into any other document without consent violates the Copyright Law of
the United States and the Berne International Copyright Agreement.
Send comments, questions, or suggestions to:
meteorite-info@ri.cmu.edu
This document prepared by
Matthew Deans
|
 |