Spacelike Wilson Loops at Finite Temperature

In the high temperature phase of Yang-Mills theories, large spatial Wilson loops show area law behaviour with a string tension that grows with increasing temperature. Within the framework of the commonly used string picture we use a large scale expansion, which allows us to determine the string tension from measurements of intermediate and symmetric Wilson loops. BI-TP 93/12; April 1993 1 Physics Department, University of Arizona, Tucson AZ 85721, USA. 2 Fakultät für Physik, Universität Bielefeld, D-4800 Bielefeld 1, Germany. 3 Physics Department, PennState, Hazleton Campus, PA 18201, USA.