題 目：Sea level characteristics of the Bay of Fundy/Gulf of Maine
報告人：Bruce Smith 教授（ 達爾豪斯大學數學與統計系主任）
時 間：3月30號下午3:00開始
地 點：燕山校區1505教室
摘 要： Sea levels in the Bay of Fundy/Gulf of Maine show several forms of non-stationarity,including increasing mean, and cyclic variation on both yearly and longer term scales.We will begin with some summary displays illustrating these patterns, followed by a survey of some frequency domain estimation methods. Equations of continuity and motion for a one dimension model are set down, and with frictional damping, lead to a parametric spectral model. The model is fit to some short term data series, and captures much of the structure apparent in a nonparametric spectral estimate. Some higher order summary statistics support the idea of a frictionally damped, tidally forced oscillation, with nonlinear dynamics.
報告人簡介：Bruce Smith is professor and chair of the department of Mathematics and Statistics at Dalhousie University. He received his PhD in Biostatistics from the University of California, Berkeley in 1988, under the supervision of David Brillinger, after which he took up a faculty position at Dalhousie. His research interests are in time series and point processes, and applications to statistical genetics and environmental science.
