STATISTICAL ANALYSIS OF RELATIONSHIP BETWEEN WIND AND SALT WEDGE INTRUSION

Abstract

 This paper describes the relationship between wind and salt wedge intrusion in Lake Abashiri. Intrusion discharge is correlated closely with water level difference between sea and lake, but may be affected in winds. This study thus aims to reveal the relationship between intrusion discharge and water level difference, wind velocity and its direction by applying statistical approaches to observed data. It shows that strong wind affects intrusion discharge secondarily by Principal Component Analysis (PCA), and observed data classified with a diagram of 1^st principal component score against 2^nd on PCA have better correlation. By multiple regression analysis with that data, estimation accuracy of intrusion discharge is improved on.