Photograph album of SCIGN radomes

(if you'd like to contribute photos, please e-mail me - see the note below)

Click on photos below to see enlarged images or linked reports (you can also right-click to view/save full-sized images)
AMUN

South Pole - Amundsen-Scott Station, Antarctica
Report and photos are from Larry Hothem, USGS and Dana Hrubes

Larry Hothem and Dana Hrubes checked the SCIGN dome at AMUN station on Dec. 17, 2000 to look for effects of two years' deployment at the South Pole. The SCIGN short dome (one of the 'first-article part' SCIGN units) was installed at AMUN station in Dec. 1998. It had last been inspected on Jan. 3, 2000. During this most recent inspection, it appears there are still no signs of damage due to extended exposure to the extreme weather conditions. Here is part of Larry's note (sent 12/31/00), "I believe it is now safe to say that the radome design we are using will survive the most extreme temperatures and temperature changes." Dana Hrubes, who inspected the dome with Larry and again more closely later, wrote, "No hairline cracks or deterioration observed." These latest photos were taken by Dana. Other photos, and the text of their e-mail correspondence, can be found here . For additional photos and other information about the AMUN station, see below for news from the Jan. 3, 2000 site visit and links to other news about the station.

SKRO

Iceland
Photo is from Halldor Geirsson, Icelandic Meteorological Office.

Icing on the dome. The ISGPS Skrokkalda (SKRO) station web page contains this and several other nice photos of the SKRO station. You can see the effects of the icing on the dome in their initial time series results. This station is funded by LGCA, and is part of the ISGPS network that is used for monitoring tectonic and volcanic activity in Iceland. Here is the ISGPS recent report. Also see photo and links to station HVOL below.

KULU

Kulusuk, Greenland
Photo is from Tonie van Dam, European Center for Geodynamics and Seismology, Luxembourg [photo credit: Bjorn Johns]

This photograph shows the station at Kulusuk, in southeastern Greenland. The photo was featured on the cover of EOS , Sept. 12, 2000 [v. 81, no. 37], accompanying an article by Tonie and colleagues that describes their ongoing research project. The title of the EOS article is, Using GPS and Gravity to Infer Ice Mass Changes in Greenland. A GRL paper by Larson & van Dam, studying postglacial rebound using GPS and absolute gravity, has recently been accepted for publication on this topic as well.

DEAD

Long Valley Caldera, California
Photos are from Elliot Endo, USGS

This directory has photos of several USGS stations that are being used to monitor Long Valley caldera in real-time with GPS, including this site called DEAD.

HVOL

Iceland
Photo is from a report by Thora Arnadottir, Icelandic Meteorological Office, and others.

Their report contains this photo of the HVOL station. The GPS network is used for monitoring tectonic and volcanic activity in Iceland

UNAM

Mexico
Photos are from Enrique Cabral, UNAM

This directory has photos of the UNAM station Tonantzintla. These stations are used for monitoring Popocatepetl volcano in near real-time with GPS, as well as tectonic motions.

AMUN

South Pole - Amundsen-Scott Station, Antarctica
Report and photos are from Larry Hothem, USGS

Larry checked the SCIGN dome at AMUN station, Jan. 3, 2000. The SCIGN short dome (one of the 'first-article part' SCIGN units) was installed at AMUN station in Dec. 1998. There are no signs of damage due to extended deployment in extreme weather conditions. Here is part of Larry's note (sent from McMurdo station on 1/12/00), "I was able to inspect the condition of the SCIGN dome. As far as we could determine, it is in excellent condition. No cracks were found. Thus, it survived the temperatures that can reach as low as about -100F." Additional photos, as well as a fact sheet with technical information about the AMUN station, and the significance and tradition of setting the South Pole marker, as well as news articles, are all available here . Also, here is a news article and video clip of Larry placing the South Pole marker during the year 2000 South Pole ceremony. At the site AMUN, a SCIGN short dome was installed in Dec. 1998 to replace a Kearney- Powerglas lid that had been at AMUN station since 1991.

PALM

Palmer Station, Antarctica
Photos are from Larry Hothem, USGS

PALM station, Dec. 1998. Here is a photo of PALM from another angle

Dive 2

Photo is from the UNAVCO Vertical Working Group, co-chaired by Tonie van Dam and Tom Herring.
People in the GPS community are interested in improving hardware and software for improving the quality of GPS results in the vertical component. The effects of radomes, and snow, ice, or moisture on the dome and antenna, are complications that probably make our measurements of the vertical noisier.


Please send me photos of stations around the world where you have deployed SCIGN domes and/or SCIGN adaptors
I'll enjoy adding them to this photo album - I hope some of your photos will have you or your friends in them, too!

Just send photos as e-mail attachments in JPG (or other) formats to me at hudnut@usgs.gov.

Please identify the GPS station by name, and names of any people in the photos too. Thanks!


These reports are preliminary and have not been reviewed for conformity with U. S. Geological Survey editorial standards. Any use of trade, product, or firm names is for descriptive use only and does not imply endorsement by the U. S. Government.

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