University of Virginia officials say they will investigate student behavior at the Cavaliers' Sept. 8 football game against Clemson in the wake of complaints that visiting fans of the Tigers were subjected to vandalism, profanity and showers of garbage.

Virginia Athletic Director Richard Schultz said the probe was prompted by a Clemson faculty member's letter to Virginia President Frank Hereford Jr. that complained of "sick behavior exhibited by your students on the evening of Sept. 8.

"I have never witnessed such crude, immature and senseless behavior as I witnessed at your stadium," Marty Williams, Clemson's director of cooperative education, wrote in the letter to Hereford.

"We were cursed for no reason and objects were dangerously thrown at us. What should have been an enjoyable occasion turned into a sad event for most of the people from Clemson."

Williams attached a Sept. 21 column from the Greenville (S.C.) News in which another Clemson fan reported she and her 20-month-old daughter were terrorized and their motor home vandalized while it was parked near Scott Stadium . . .

When Maryland counts its football revenue at the end of the year, the figure is expected to be at least $400,000 less than the 1983 total, with home attendance down more than 12,000 per game after the first three dates, according to Athletic Director Dick Dull.

After home games against Syracuse, Vanderbilt and Wake Forest -- none of which was ranked at the time the Terrapins played them -- Maryland has drawn a total of 105,650, an average of 35,216. The biggest crowd was 38,850 for the season opener with Syracuse.

Last season, no home game drew fewer than 40,000. For West Virginia, Pitt and Virginia, Maryland drew 143,415, an average of 47,805.