Segments and Gaps in Tide Gauge Records_ Crimson Publishers

 Segments and Gaps in Tide Gauge Records by Nils Axel Morner* in Examines in Marine Biology & Oceanography_ Journal of Marine Biology

 

Abstract
The tide-gauge stations all over the globe frequently include gaps, earthquake deformations of reference level, damages of stations and re-locations of sites. In meaningful reconstruction of past sea level change all such structures must be handled with great care. In the original databases of PSMSL and NOAA they are ignored, invalidating meaningful long-term mean trend analyses

The word “segment” in sea level analyses has been differently used. Mörner [1-3] used it to denote segments of sea level changes that had to be characterized individually-in contrast to linear trends ignoring the observational records. Because tide gauges in Mumbai and in Visakhapatnam located on opposed sites of the Deccan Plateau record the same four-parted segments, I interpreted these segments as records of eustatic changes (Figure 1). Parker [4,5], on the other hand, used segmentation to denote interruptions and gaps in the tide-gauge recording

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