Glacial isostatic adjustment of the British Isles: new constraints from GPS measurements of crustal motion

Bradley, Sarah; Milne, Glenn A.; Teferle, Felix Norman; Bingley, R. M.; Orliac, Etienne

doi:10.1111/j.1365-246x.2008.04033.x

Cited by 72 publications

(75 citation statements)

References 51 publications

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“…Shennan and Woodworth, 1992;Shennan and Horton, 2002;Gehrels and Woodworth, 2012) or models capable of simulating glacial isostatic adjustment, the rebound effect resulting from the last de-glaciation (e.g. Peltier, 2004;Bradley et al, 2009;Hansen et al, 2011;Shennan et al, 2012). GIA is the only vertical land movement process that can be modelled on a global basis and for which we can get VLM predictions with uncertainties similar to those of RMSL rates from tide gauges.…”

Section: Rates Of Vertical Land Movementmentioning

confidence: 99%

Observed mean sea level changes around the North Sea coastline from 1800 to present

Wahl¹,

Haigh²,

Woodworth³

et al. 2013

Earth-Science Reviews

147

128

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This paper assesses historic changes in mean sea level around the coastline of the North Sea, one of the most densely populated coasts in the world. Typically, such analyses have been conducted at a national level, and detailed geographically wider analyses have not been undertaken for about 20 years. We analyse long records (up to 200 years) from 30 tide gauge sites, which are reasonably uniformly distributed along the coastline, and: (1) calculate relative sea level trends; (2) examine the inter-annual and decadal variations; (3) estimate regional geocentric (sometimes also referred to as 'absolute') sea level rise throughout the 20 th century; and (4)

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Section: Rates Of Vertical Land Movementmentioning

confidence: 99%

Observed mean sea level changes around the North Sea coastline from 1800 to present

Wahl¹,

Haigh²,

Woodworth³

et al. 2013

Earth-Science Reviews

147

128

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“…1). The response of RSL to glaciation in Ireland, including across its continental shelf (Scourse et al, 2009), was regionally and temporally complex due to GIA (Lambeck, 1993a(Lambeck, , 1993bBradley et al, 2009;Brooks et al, 2011). Consequently, the hydraulic geometries of terrestrial glaciofluvial channels that developed within existing river valleys have been affected by both the magnitude of glaciofluvial discharge and variation in RSL (Gallagher, 2002;Gallagher et al, 2004).…”

Section: Study Reach and Palaeoenvironmental Contextmentioning

confidence: 99%

Eskers in a complete, wet-based glacial system in the Phlegra Montes region, Mars

Gallagher

Balme

2015

Earth and Planetary Science Letters

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This paper investigates the influences of palaeohydrology and geologicaltopographic inheritance in shaping the channel of the lower River Suir, southeast Ireland. Results of acoustic surveys of the lower River Suir and Waterford Harbour reveal two scales of pseudo-cyclic river bedforms. Longitudinal elevation profiles of the geological topography (undulating bedrock and till-mantled bedrock) bounding the present floodplain swath reveal pseudo-cyclicity in that terrain too. Spectral and statistical analyses are used to quantify the cyclicity of the long profile and geological-topographic series. These methods show that the dominant cyclicity of the long profile reflects autocorrelation more than inheritance of cyclicity from the bounding geological topography. The cyclicity of the long profile mainly reflects a hydraulic control on pool-spacing, although some cyclicity probably has been inherited from the geological-topography. Channel-forming palaeodischarge is estimated based on the dominant pool-spacing revealed by spectral analysis, validated using relationships between meander wavelength, channel cross-sectional geometry and hydraulically-informed discharge reconstruction. The palaeodischarge estimates are in close agreement and are two orders of magnitude greater than present flood maxima. Significantly, these palaeodischarge estimates also agree closely with palaeodischarge calculated for the submerged Pleistocene palaeochannel that extends across the near-shore continental shelf from Waterford Harbour. The pool-sequence of the lower Suir and the submerged palaeochannel represent a former land-system that was active during a period of low relative sea level during the last glacial. More broadly, the paper offers insights into the landscape evolution of formerly glaciated regions that experienced very wide This article is protected by copyright. All rights reserved. discharge variability during and after the transition from glacial to interglacial regimes, in a context of complex relative sea level change.

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“…This suggests that the pattern of present-day vertical crustal/land motions based on geodetic data is largely consistent with the pattern of vertical crustal/land motions based on Holocene sea-level data. Furthermore, the inclusion of the CGPS stations in Northern Ireland, not available in Bradley et al (2009, defines the westerly boundary of the GIA-induced uplift over Scotland and Northern Ireland, which improves the geodetic constraints for future GIA models for the British Isles. derived from the vertical station velocities as obtained in ITRF2005 and from those in ITRF2005 then aligned to absolute gravity (AG) following Teferle et al (2009).…”

Section: Vertical Motionsmentioning

confidence: 99%

“…Furthermore, most of these stations have only been in-stalled since about 2004 and others have been frequently moved or shutdown. In view of this, only about 30 stations were considered suitable for geophysical applications in recent publications which considered data up to 31 December 2005 (Bradley et al, 2009;Teferle et al, 2009;Woodworth et al, 2009). Furthermore, these 30 stations provided a fairly inhomogeneous station distribution, with a lack of stations in the geophysically interesting areas of Scotland and Northern Ireland.…”

Section: The Bigf Networkmentioning

confidence: 99%

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New Estimates of Present-Day Crustal/Land Motions in the British Isles Based on the BIGF Network

Hansen

Teferle

Bingley

et al. 2011

Geodesy for Planet Earth

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In this study we present results from a recent reprocessing effort that included data from more than 120 continuous Global Positioning System (CGPS) stations in the British Isles for the period from 1997 to 2008. Not only was the CGPS network dramatically densified from previous investigations by the authors, it now also includes, for the first time, stations in Northern Ireland, providing new constraints on glacio-isostatic processes active in the region. In our processing strategy we apply a combination of re-analysed satellite orbit and Earth rotation products together with updated models for absolute satellite and receiver antenna phase centers, and for the computation of atmospheric delays. Our reference frame implementation uses a semi-global network of 37 stations, to align our daily position estimates, using a minimal constraints approach, to ITRF2005. This network uses a combination of current IGS reference frame stations plus additional IGS stations in order to provide similar network geometries throughout the complete time span. The derived horizontal and vertical station velocities are used to investigate present-day crustal/land motions in the British Isles. This first solution provides the basis for our contribution to the Working Group on Regional Dense Velocity Fields, 2007 -2011 of the International Association of Geodesy Subcommission 1.3 on Regional Reference Frames.

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Glacial isostatic adjustment of the British Isles: new constraints from GPS measurements of crustal motion

Cited by 72 publications

References 51 publications

Observed mean sea level changes around the North Sea coastline from 1800 to present

Observed mean sea level changes around the North Sea coastline from 1800 to present

Eskers in a complete, wet-based glacial system in the Phlegra Montes region, Mars

New Estimates of Present-Day Crustal/Land Motions in the British Isles Based on the BIGF Network

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