Fig. 6
From: Formation conditions and mechanical properties of aggregates produced in tephra–water–snow flows
Change of aggregate mass with air temperature. Effect of air temperature, \(\theta \), measured around the rotating table on the evolution of the aggregate mass, m, with time in EXP1 (\(d_{\text{t}} = 32\)–\(63\,\upmu \text {m}\), \(C_{\text{t}} = {33\%}\), and \(C_{\text{s}} = {9\%}\)): a change in \(\theta \) at each rotation time t and b m vs. \(\theta _{\text{ave}}\) times t. Blue up-pointing and red down-pointing triangles in a denote \(\theta \) before and after rotation, respectively. The horizontal axis of b \(\theta _{\text{ave}} \times t\) indicates heat transport from the air into the mixture, where \(\theta _{\text{ave}}\) is calculated by Eq. (7)