Skip to main content Accessibility help
×
Home

A detailed density profile of the Dome Fuji (Antarctica) shallow ice core by X-ray transmission method

  • A. Hori (a1), K. Tayuki (a1), H. Narita (a1), T. Hondoh (a1), S. Fujita (a2), T. Kameda (a3), H. Shoji (a3), N. Azuma (a4), K. Kamiyama (a5), Y. Fujii (a5), H. Motoyama (a5) and O. Watanabe (a5)...

Abstract

An X-ray transmission method has been developed to obtain a continuous profile of bulk densities of ice cores. Intensities of X-rays transmitted through an ice-core sample were continuously measured by an X-ray detector during translation of the sample across the X-ray beam. A thick section of an ice core with a constant thickness was prepared by band-sawing followed by microtome planing. The X-ray intensity profile obtained was converted to a density profile using a calibration curve for X-ray absorption vs ice thickness. Using this method, spatial resolution of the density profile was down to 1 mm. X-ray radiographs were also taken on a two-dimensional detector imaging plate, in order to observe layer structures of the ice cores.

The method was applied to Dome Fuji (Antarctica) ice cores from the surface to 110 m depth. From the density profile obtained we calculated the power spectrum of the density variation by the discrete Fourier transform, and obtained several peaks at different frequencies. The center period in the spectrum was close to the annual accumulation thickness at the drill site.

  • View HTML
    • Send article to Kindle

      To send this article to your Kindle, first ensure no-reply@cambridge.org is added to your Approved Personal Document E-mail List under your Personal Document Settings on the Manage Your Content and Devices page of your Amazon account. Then enter the ‘name’ part of your Kindle email address below. Find out more about sending to your Kindle. Find out more about sending to your Kindle.

      Note you can select to send to either the @free.kindle.com or @kindle.com variations. ‘@free.kindle.com’ emails are free but can only be sent to your device when it is connected to wi-fi. ‘@kindle.com’ emails can be delivered even when you are not connected to wi-fi, but note that service fees apply.

      Find out more about the Kindle Personal Document Service.

      A detailed density profile of the Dome Fuji (Antarctica) shallow ice core by X-ray transmission method
      Available formats
      ×

      Send article to Dropbox

      To send this article to your Dropbox account, please select one or more formats and confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your <service> account. Find out more about sending content to Dropbox.

      A detailed density profile of the Dome Fuji (Antarctica) shallow ice core by X-ray transmission method
      Available formats
      ×

      Send article to Google Drive

      To send this article to your Google Drive account, please select one or more formats and confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your <service> account. Find out more about sending content to Google Drive.

      A detailed density profile of the Dome Fuji (Antarctica) shallow ice core by X-ray transmission method
      Available formats
      ×

Copyright

References

Hide All
Gerland, S., Oerter, H., Kipfstuhl, J., Wilhelms, F., Miller, H. and Miners, W. D.. 1999. Density log of a 181 m long ice core from Berkner Island, Antarctica. Ann. Glacial, 29 (see paper in this volume).
Herron, M. M. and Langway, C. C. Jr. 1980. Firn densification: an empirical model. J. Glacial, 25(93), 373-385.
Langway, C.C. Jr, Shoji, H., Mitani, A. and Clausen, H. B.. 1993. Transformation process observations of polar firn to ice. Ann. Glacial., 18,199-202.
Narita, H., Maeno, N. and Nakawo, M.. 1978. Structural characteristics of firn and ice cores drilled at Mizuho station, East Antarctica. Natl. Inst. Polar Res. Mem., Special Issue 10,48-61.
Schwander, J. and Stauffer, B.. 1984. Age difference between polar ice and the air trapped in its bubbles. Nature, 311(5981), 45-47
Schwander, J., Sowers, T., Barnola, J. M., Blunier, T., Fuchs, A. and Malaize, B.. 1997. Age scale of the air in the Summit ice: implication for glacial-interglacial temperature change. J.Geophys. Res., 102, 19,483-19,493.
Tayuki, K., Hondoh, T. and Narita, H.. 1997. High resolution density profile of ice cores measured by a new X-ray method. (Abstract.) Proc. NIPR Symp. Polar Meteorol. Glaciol. 11, 253.
Watanabe, O. and 12 others. 1997a. Preliminary discussion of physical properties of the Dome Fuji shallow ice core in 1993, Antarctica. Proc. NIPR Symp. Polar Meteorol. Glaciol. 11, 1-8.
Watanabe, O. and 15 others. 1997b. A preliminary study of ice core chronology at Dome Fuji Station, Antarctica. Proc. NIPR Symp. Polar Meteorol. Glaciol. II, 9-13.
Wilkinson, D.S. 1988. A pressure-sintering model for the densification of polar firn and glacier ice. J.Glaciol, 34(116), 40-45.

Metrics

Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed