Show simple item record

dc.contributor.authorDenys, Paul H
dc.contributor.authorBeavan, R. John
dc.contributor.authorHannah, John
dc.contributor.authorPearson, Chris F.
dc.contributor.authorPalmer, Neville
dc.contributor.authorDenham, Mike
dc.contributor.authorHreinsdottir, Sigrun
dc.date.available2020-02-17T01:31:45Z
dc.date.copyright2020-01-02
dc.identifier.citationDenys, P. H., Beavan, R. J., Hannah, J., Pearson, C. F., Palmer, N., Denham, M., & Hreinsdottir, S. (2020). Sea Level Rise in New Zealand:The Effect of Vertical Land Motion on Century‐Long Tide Gauge Records in a Tectonically Active Region. Journal of Geophsical Research: Solid Earth, 125, e2019JB018055. doi:10.1029/2019JB018055en
dc.identifier.urihttp://hdl.handle.net/10523/9898
dc.description.abstractHistorically tide gauge (TG) data have been used to estimate global sea level rise. Critical to the analysis of TG records is the assumption that the TG sites are stable and not affected by vertical land motion (VLM). We analyze century‐long TG records from New Zealand that have been affected by VLM due to both major and transient earthquake events at a regional level as well as local instabilities. Using combined GPS and precise leveling, we estimate relative VLM between the GPS and TG of up to 1 mm/year. Based on 15–20 years of GPS data, the effect of seismic activity and slow slip events has uplifted sites by up to 0.8 mm/year on average in Wellington and Dunedin. Updated estimates of long‐term relative sea level (RSL) at four New Zealand TGs, as well as an estimate of RSL at a new fifth TG (New Plymouth), are determined using data through 2013—an additional 13 years compared to the previous study. The VLM corrected RSL rates gives our best estimate absolute sea level of +1.45±0.28 mm/year (1891−2013). It is important that absolute sea level derived from RSL rates include realistic estimates of VLM, especially at TG sites that are close to plate boundaries, located in seismically active regions, affected by glacial isostatic adjustment, land ice loss, or gas/oil/water extraction.en_NZ
dc.format.mimetypeapplication/pdf
dc.format.mimetypeapplication/pdf
dc.format.mimetypeapplication/octet-stream
dc.format.mimetypeapplication/octet-stream
dc.format.mimetypeapplication/octet-stream
dc.format.mimetypeapplication/octet-stream
dc.format.mimetypeapplication/octet-stream
dc.language.isoenen_NZ
dc.publisherAmerican Geophysical Unionen_NZ
dc.relation.ispartofJournal of Geophsical Research: Solid Earthen_NZ
dc.titleSea Level Rise in New Zealand:The Effect of Vertical Land Motion on Century‐Long Tide Gauge Records in a Tectonically Active Regionen_NZ
dc.typeJournal Articleen_NZ
dc.date.updated2020-02-11T06:48:50Z
otago.schoolSchool of Surveyingen_NZ
otago.relation.volume125en_NZ
dc.identifier.doi10.1029/2019JB018055en_NZ
otago.bitstream.startpagee2019JB018055en_NZ
otago.openaccessOpenen_NZ
dc.description.refereedPeer Revieweden_NZ
 Find in your library

Files in this item

Thumbnail
Thumbnail
Thumbnail
Thumbnail
Thumbnail
Thumbnail
Thumbnail

This item appears in the following Collection(s)

Show simple item record