‘An investigation into Late Holocene relative sea level change of the Dovey Estuary, Wales: A multi-proxy based analysis’

Abstract

This thesis has further added to the current understanding of Late Holocene relative sea level change at the Dovey Estuary, West Wales where studies of the Late Holocene are not commonplace. Topographical studies were used alongside a multi-proxy approach to environmental reconstruction. Sub-surface samples along a transect and biostratigraphical studies of a core section, using both ostracods and diatoms allowed the reconstruction to take place. The paleo samples range from the present day to an estimated 165 years B.P. based on sedimtation rates in the Dovey Estuary, a time period exposed to anthropogenic
influence. The data collected, evidences a small rise in relative sea level at the Dovey Estuary for this period, the measure of rise has not been quantified. It is clear from the data that no large-scale changes have taken place as a mixed brackish environment much like today is ubiquitous throughout. The main reason suggested for this is the lack of freshwater input to the study area and trapped sediment and marine water pools which heavily influenced the results. From examining previous research and comparing it to the widely accepted knowledge of eustatic and isostatic change during this time, a rise of approximately 20cm has been suggested. The reason for the eustatic sea level rise is most likely a result of anthropogenic induced climate change resulting in an increase in ocean
steric effect and glacio-eustasy.

Date of Award	Jun 2018
Original language	English
Awarding Institution	Coventry University
Supervisor	Adrian Wood (Supervisor)