An evaluation of the thermal properties and albedo of a macrotidal flat Public Deposited

http://ir.library.oregonstate.edu/concern/defaults/f7623f06p

copyrighted by American Geophysical Union

Descriptions

Attribute NameValues
Creator
Abstract or Summary
  • The thermal properties of sediment and the albedo are critical in calculating the heat flux of a tidal flat. However, they are not well known because of the difficulties of sampling and observing tidal flats. We use extensive field observations of a macrotidal flat on the western coast of Korea to determine its sediment heat capacity and albedo. The estimated heat capacity of the upper 0.1 m is 3.65 x 106 J m¯³ K¯¹ with a water content of 70%. Heat capacity decreases with depth to 2.96 x 106 J m¯³ K¯¹ at 0.4 m depth. Estimated thermal diffusivities are 0.47–0.63 x 10¯⁶ m² s¯¹ and 0.38–0.64 x 10¯⁶ m² s¯¹ in spring and summer, respectively. The calculated albedo is a strong function of the solar altitude and the atmospheric transmittance. Atmospheric transmittance is especially important to the albedo when the solar altitude is low. Seasonal mean albedos are 0.13 and 0.15 in spring and summer, respectively. The heat capacity and albedo values obtained above were verified by using them to make independent heat flux estimates at other stations. Estimates based on heat capacity were correlated to albedo-based heat flux estimates with an r² greater than 0.7.
Resource Type
DOI
Date Available
Date Issued
Citation
  • Cho, Y-G., Dever, E. P., and Kim, T-W., (2007). An evaluation of the thermal properties and albedo of a macrotidal flat. J. Geophys. Res., 112, C12009.
Series
Rights Statement
Publisher
Language
Replaces
Additional Information
  • description.provenance : Approved for entry into archive by Linda Kathman(linda.kathman@oregonstate.edu) on 2010-06-03T22:33:52Z (GMT) No. of bitstreams: 1 Kim_et_al_JGR_2007.pdf: 435001 bytes, checksum: 78d9d87a85ce79fe11f2c2263a2d0eb6 (MD5)
  • description.provenance : Made available in DSpace on 2010-06-03T22:33:52Z (GMT). No. of bitstreams: 1 Kim_et_al_JGR_2007.pdf: 435001 bytes, checksum: 78d9d87a85ce79fe11f2c2263a2d0eb6 (MD5) Previous issue date: 2007-12-19
  • description.provenance : Submitted by Mary Phan (mpscanner@gmail.com) on 2010-06-03T21:20:03Z No. of bitstreams: 1 Kim_et_al_JGR_2007.pdf: 435001 bytes, checksum: 78d9d87a85ce79fe11f2c2263a2d0eb6 (MD5)

Relationships

In Administrative Set:
Last modified: 07/25/2017

Downloadable Content

Download PDF
Citations:

EndNote | Zotero | Mendeley

Items