Files in this item
Quantifying suspended sediment concentration in subglacial sediment plumes discharging from two Svalbard tidewater glaciers using Landsat-8 and in situ measurements
Item metadata
dc.contributor.author | Schild, Kristin M. | |
dc.contributor.author | Hawley, Robert L. | |
dc.contributor.author | Chipman, Jonathan W. | |
dc.contributor.author | Benn, Douglas I. | |
dc.date.accessioned | 2017-10-26T14:30:25Z | |
dc.date.available | 2017-10-26T14:30:25Z | |
dc.date.issued | 2017-12-02 | |
dc.identifier | 251437049 | |
dc.identifier | 8a183a44-aebd-4968-93b1-8ad02d0709aa | |
dc.identifier | 85051952384 | |
dc.identifier | 000412545900021 | |
dc.identifier.citation | Schild , K M , Hawley , R L , Chipman , J W & Benn , D I 2017 , ' Quantifying suspended sediment concentration in subglacial sediment plumes discharging from two Svalbard tidewater glaciers using Landsat-8 and in situ measurements ' , International Journal of Remote Sensing , vol. 38 , no. 23 , pp. 6865-6881 . https://doi.org/10.1080/01431161.2017.1365388 | en |
dc.identifier.issn | 0143-1161 | |
dc.identifier.other | RIS: urn:3473907316AF0511203F817108433B20 | |
dc.identifier.other | ORCID: /0000-0002-3604-0886/work/64697381 | |
dc.identifier.uri | https://hdl.handle.net/10023/11926 | |
dc.description | This work was supported by National Science Foundation IGERT award: [Grant Number DGE-0801490]; National Science Foundation GK-12 award: [Grant Number DGE-0947790]; NASA supplement award: [Grant Number NNX10AG22G]; American Alpine Club under their Research Grant; Geological Society of America under their Research Grant; the ConocoPhillips-Ludin Northern Area Program under the CRIOS project (Calving Rates and Impact on Sea Level); and Dartmouth Earth Sciences Department. | en |
dc.description.abstract | Marine-terminating outlet glaciers discharge mass through iceberg calving, submarine melting, and meltwater run-off. While calving can be quantified by in situ and remote-sensing observations, meltwater run-off, the subglacial transport of meltwater, and submarine melting are not well constrained due to inherent difficulties observing the subglacial and proglacial environments at tidewater glaciers. Remote-sensing and in situ measurements of surface sediment plumes, and their suspended sediment concentration (SSC), have been used as a proxy for glacier meltwater run-off. However, this relationship between satellite reflectance and SSC has predominantly been established using land-terminating glaciers. Here, we use two Svalbard tidewater glaciers to establish a well-constrained relationship between Landsat-8 surface reflecance and SSC and argue that it can be used to measure relative meltwater run-off at tidewater glaciers throughout a summer melt season. We find the highest correlation between SSCs and Landsat-8 surface reflectance by using the red + NIR band combination (r2 = 0.76). The highest correlation between SSCs and in situ field spectrometer measurements is in the 740-800 nm wavelength range (r2 = 0.85), a spectral range not currently measured by Landsat. Additionally, we find that in situ and Landsat-8 measurements for surface reflectance of SSCs are not interchangeable and therefore establish a relationship for each detection method. We then use the Landsat-8 relationship to calculate total surface sediment load, finding a strong correlation between total surface sediment load and a proxy for meltwater run-off (r2 ≥ 0.89). Our results establish a new metric to calculate SSCs from Landsat-8 surface reflectance and demonstrate how the SSC of subglacial sediment plumes can be used to monitor relative seasonal meltwater discharge at tidewater glaciers. | |
dc.format.extent | 17 | |
dc.format.extent | 2706133 | |
dc.language.iso | eng | |
dc.relation.ispartof | International Journal of Remote Sensing | en |
dc.subject | GE Environmental Sciences | en |
dc.subject | GB Physical geography | en |
dc.subject | NDAS | en |
dc.subject | SDG 14 - Life Below Water | en |
dc.subject.lcc | GE | en |
dc.subject.lcc | GB | en |
dc.title | Quantifying suspended sediment concentration in subglacial sediment plumes discharging from two Svalbard tidewater glaciers using Landsat-8 and in situ measurements | en |
dc.type | Journal article | en |
dc.contributor.institution | University of St Andrews. School of Geography & Sustainable Development | en |
dc.contributor.institution | University of St Andrews. Bell-Edwards Geographic Data Institute | en |
dc.identifier.doi | 10.1080/01431161.2017.1365388 | |
dc.description.status | Peer reviewed | en |
This item appears in the following Collection(s)
Items in the St Andrews Research Repository are protected by copyright, with all rights reserved, unless otherwise indicated.