Next Article in Journal
Developing Real-Time Nowcasting System for Regional Landslide Hazard Assessment under Extreme Rainfall Events
Previous Article in Journal
On the Power of Microwave Communication Data to Monitor Rain for Agricultural Needs in Africa
Article

Stratigraphic Analysis of Firn Cores from an Antarctic Ice Shelf Firn Aquifer

1
Centro de Estudios Avanzados en Zonas Áridas (CEAZA), Raúl Bitrán 1305, La Serena 1700000, Chile
2
Laboratorio de Análisis Isotópico, Universidad Andrés Bello, Viña del Mar 2531015, Chile
*
Author to whom correspondence should be addressed.
Now at: Asiaq—Greenland Survey, Qatserisut, Nuuk 3900, Greenland.
Academic Editor: Michael Kuhn
Water 2021, 13(5), 731; https://doi.org/10.3390/w13050731
Received: 5 February 2021 / Revised: 24 February 2021 / Accepted: 3 March 2021 / Published: 8 March 2021
In recent decades, several large ice shelves in the Antarctic Peninsula region have experienced significant ice loss, likely driven by a combination of oceanic, atmospheric and hydrological processes. All three areas need further research, however, in the case of the role of liquid water the first concern is to address the paucity of field measurements. Despite this shortage of field observations, several authors have proposed the existence of firn aquifers on Antarctic ice shelves, however little is known about their distribution, formation, extension and role in ice shelf mechanics. In this study we present the discovery of saturated firn at three drill sites on the Müller Ice Shelf (67°14′ S; 66°52′ W), which leads us to conclude that either a large contiguous or several disconnected smaller firn aquifers exist on this ice shelf. From the stratigraphic analysis of three short firn cores extracted during February 2019 we describe a new classification system to identify the structures and morphological signatures of refrozen meltwater, identify evidence of superficial meltwater percolation, and use this information to propose a conceptual model of firn aquifer development on the Müller Ice Shelf. The detailed stratigraphic analysis of the sampled cores will provide an invaluable baseline for modelling studies. View Full-Text
Keywords: ice shelf; firn aquifer; ice core; stratigraphy; glacier hydrology; Antarctica ice shelf; firn aquifer; ice core; stratigraphy; glacier hydrology; Antarctica
Show Figures

Figure 1

MDPI and ACS Style

MacDonell, S.; Fernandoy, F.; Villar, P.; Hammann, A. Stratigraphic Analysis of Firn Cores from an Antarctic Ice Shelf Firn Aquifer. Water 2021, 13, 731. https://doi.org/10.3390/w13050731

AMA Style

MacDonell S, Fernandoy F, Villar P, Hammann A. Stratigraphic Analysis of Firn Cores from an Antarctic Ice Shelf Firn Aquifer. Water. 2021; 13(5):731. https://doi.org/10.3390/w13050731

Chicago/Turabian Style

MacDonell, Shelley, Francisco Fernandoy, Paula Villar, and Arno Hammann. 2021. "Stratigraphic Analysis of Firn Cores from an Antarctic Ice Shelf Firn Aquifer" Water 13, no. 5: 731. https://doi.org/10.3390/w13050731

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop