REPLACE THIS SENTENCE WITH THE TITLE OF YOUR ABSTRACT. A. B. Author1 and C. D. Author2. 1Affiliation for first author. E-mail: first author. 2Affiliation for second author. Introduction: Replace these instructions with the text of your abstract. Each abstract will be limited to ONE SINGLE column for publication in the journal. The dimensions of your completed abstract should be no more than 3.45 inches (8.7 cm) wide by 9 inches (23 cm) long. Please AVOID graphic elements. They often are too small to be legible. The journal reserves the right to discard any graphic that is not legible or of poor quality. The ENTIRE abstract must fit into the dimensions described above (this template reflects the correct format). Abstracts submitted in violation of this requirement will not be published in the journal. Heading Styles: The section heads in this template use the recommended style (upper and lower case, bold, followed by a colon). The format for second-level heads is show below: Sample of a level-two head. Automatic paragraph indents are imbedded to appear every time you use a hard return. If you’re using the spell checker and it doesn’t seem to be working, check the “Language” option under the “Tools” to make sure that “No Proofing” isn’t selected as the default. You should also check that the default font is Times New Roman and not New York (this conversion takes place on some Macintosh systems) and font size is 10 for text and 12 for title. References: Use the brief numbered style common in many abstracts, e.g., [1], [2], etc. References should then appear in numerical order in the reference list, journal names should be spelled in full. Please, use the following style: [1] Author A. B. and Author C. D. 1997. Journal of Geophysical Research 90:1151–1154. [2] Author E. F. et al. 1997. Meteoritics & Planetary Science 32:A74. [3] Author G. H. 1996. Abstract #1423. 27th Lunar & Planetary Science Conference. [4] Hsu W. et al. 1997. 28th Lunar and Planetary Science Conference. pp. 609–610.