Low-frequency sea-level fluctuations along the coasts of Namibia and South Africa

Summary. Sea-level records at nine ports along the coasts of Namibia and South Africa are used to establish the existence of coastal trapped disturbances in sea-level as a response to the passage of synoptic weather systems. Using spectral analysis the characteristics and spatial variability of the sea-level fluctuations are identified. The results of cross-correlation analyses performed on sea-level data at adjacent ports for two periods during 1982 are discussed in detail to examine the propagation of coastal trapped waves round the coast.