Seiches in Lake Vättern
Detta är ett förslag på examensarbete för kandidat- eller masternivå vid Institutionen för marina vetenskaper. Examensarbeten vid Institutionen för marina vetenskaper görs självständigt och bedöms individuellt.
Subject: Physical Oceanography
Main supervisor: Göran Broström, professor
Suitable level and length: Bachelor or Master, project can be adjusted to suitable education level. At MSc level, designing and carrying out field measurements should be considered.
Suitable time period: all year round
Location: Göteborg
Background
Lake Vättern is the second largest lake in Sweden. It is quite deep and has a simple geometry. It is well known that there are some seiche-oscillations in the lake. The present project aims at studying those in some greater detail.
Project description
Some new measurements of water level have been taken by the supervisor. The student will analyze this observation e.g. with respect to dominating frequencies in the spectral analysis of the time series. The data analysis will consider how accounting for atmospheric pressure influences analysis of seiche amplitude and frequencies. Role of sampling interval should also be considered.
The work aims at suggesting new measurement strategies for further and improved studies of these seiches. New measurements will be taken in 2019, and this work is a pre-study for these observations.
Method
The method will be analytical and numerical analysis of time series that is available. Some simple laboratory work to determine response time of device may be included. Furthermore, some simple eigenmode analysis using COMSOL multhipysics can be included.
Contact
Göran Broström, professor
Email: goran.brostrom@marine.gu.se