dc.contributor.author	Pearce, Megan
dc.date.accessioned	2019-04-16T20:24:14Z
dc.date.available	2019-04-16T20:24:14Z
dc.date.issued	1998	en
dc.description.abstract	This thesis is an investigation into some erosional gully features of the landscape along the coastal margin of the Canterbury Bight, east coast of the South Island, New Zealand. These gullies range in size from only a few meters up to 6km in length and are a significant aspect of the landscape between the Rakaia and Rangitata Rivers. An examination of vertical aerial photographs revealed numbers in the order of 300 gullies, although a substantial number of these can be identified as aspects of coastal cliff retreat. A number of gullies have been surveyed and ground truthed using standard surveying techniques in order to make out any distinguishing characteristics. Oblique aerial photographs were taken so as to enhance the vertical aerial photographic interpretation. Cliff retreat along this coastline is averaged at 0.5m/yr and has been found to have considerable impact on the gullies as they are relict features and consequently, their development is not in keeping with the rate of cliff retreat. It has been found that there are at least three groupings of the gullies in relation to their size, those being small, intermediate and large. The formation of the larger gullies has been initially attributed to subsurface processes, producing surface irregularities in which continued erosion can concentrate. It has also been estimated that the gullies were initiated between the period of 150 to 600 years BP, but that it is most likely that all gullies were not formed at the same time. The most probable explanation found that the three different gully sizes identified can be attributed to having developed in three different time periods.	en
dc.identifier.uri	http://hdl.handle.net/10092/16646
dc.identifier.uri	http://dx.doi.org/10.26021/8974
dc.language	English
dc.language.iso	en
dc.publisher	University of Canterbury	en
dc.rights	All Rights Reserved	en
dc.rights.uri	https://canterbury.libguides.com/rights/theses	en
dc.title	The gullies of the Canterbury Bight : Rakaia to the Rangitata.	en
dc.type	Theses / Dissertations	en
thesis.degree.discipline	Geography	en
thesis.degree.grantor	University of Canterbury	en
thesis.degree.level	Masters	en
thesis.degree.name	Master of Science	en
uc.bibnumber	687433	en
uc.college	Faculty of Science	en

The gullies of the Canterbury Bight : Rakaia to the Rangitata.

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