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Area changes of glaciers on active volcanoes in Latin America between 1986 and 2015 observed from multi-temporal satellite imagery
| Content Provider | Scilit |
|---|---|
| Author | Reinthaler, Johannes Paul, Frank Granados, Hugo Delgado Rivera, Andrés Huggel, Christian |
| Copyright Year | 2019 |
| Description | Glaciers on active volcanoes are subject to changes in both climate fluctuations and volcanic activity. Whereas many studies analysed changes on individual volcanoes, this study presents for the first time a comparison of glacier changes on active volcanoes on a continental scale. Glacier areas were mapped for 59 volcanoes across Latin America around 1986, 1999 and 2015 using a semi-automated band ratio method combined with manual editing using satellite images from Landsat 4/5/7/8 and Sentinel-2. Area changes were compared with the Smithsonian volcano database to analyse possible glacier–volcano interactions. Over the full period, the mapped area changed from 1399.3 ± 80 $km^{2}$to 1016.1 ± 34 $km^{2}$(−383.2 $km^{2}$) or −27.4% (−0.92% $a^{−1}$) in relative terms. Small glaciers, especially in tropical regions lost more of their area compared to large and extra–tropical glaciers. Interestingly, 46 out of 59 analysed glaciers (78%) showed a decelerating shrinkage rate in the second period (−1.20% $a^{−1}$before 1999 and −0.70% $a^{−1}$after 1999). We found a slightly higher (but statistically not significant) area loss rate (−1.03% $a^{−1}$) for glaciers on volcanoes with eruptions than without (−0.86% $a^{−1}$). |
| Related Links | https://www.cambridge.org/core/services/aop-cambridge-core/content/view/99178DD00E13C9E7354BEBEA48AF85F4/S0022143019000303a.pdf/div-class-title-area-changes-of-glaciers-on-active-volcanoes-in-latin-america-between-1986-and-2015-observed-from-multi-temporal-satellite-imagery-div.pdf |
| Ending Page | 556 |
| Page Count | 15 |
| Starting Page | 542 |
| ISSN | 00221430 |
| e-ISSN | 17275652 |
| DOI | 10.1017/jog.2019.30 |
| Journal | Journal of Glaciology |
| Issue Number | 252 |
| Volume Number | 65 |
| Language | English |
| Publisher | Cambridge University Press (CUP) |
| Publisher Date | 2019-08-01 |
| Access Restriction | Open |
| Subject Keyword | Journal of Glaciology Remote Sensing Glacier Area Change Glacier Mapping Glacier–volcano Interaction Optical Remote Sensing |
| Content Type | Text |
| Resource Type | Article |
| Subject | Earth-Surface Processes |