Formation of Stanley Patch volcanic cone: New insights into the evolution of Deception Island caldera (Antarctica)

Hopfenblatt, Joaquin; Geyer, Adelina; Aulinas, M.; Álvarez-Valero, Antonio M.; Gisbert, Guillem; Keresztúri, Gábor; Ercilla, Gemma; Gómez-Ballesteros, M.; Márquez, Álvaro; García‐Castellanos, Daniel; Pedrazzi, Dario; Sumino, Hirochika; Höskuldsson, Ármann; Giralt, Santiago; Angulo‐Preckler, Carlos

doi:10.1016/j.jvolgeores.2021.107249

Cited by 3 publications

(1 citation statement)

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“…In fact, this bay can almost be considered a lake, with important reception of tephra after eruptive processes [52,53]. In addition to this, the presence of submerged volcanoes such as the Stanley Patch volcano, the largest volcanic cone located in the southern sector of the bay [54], and the narrow entrance to Port Foster (Neptune's Bellows, see Figure 1b) require precise bathymetry for navigation purposes.…”

Section: Digital Bathymetry Modelsmentioning

confidence: 99%

Evaluation and Modelling of the Coastal Geomorphological Changes of Deception Island since the 1970 Eruption and Its Involvement in Research Activity

Torrecillas,

Zarzuelo,

de la Fuente

et al. 2024

Remote Sensing

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Deception Island is an active volcano with a submerged caldera open to the sea called Port Foster. Several post-caldera-collapsed volcanic events, as well as hydrodynamics, have changed its inner coastline, shaping new volcanic deposits. A hydrodynamic model is presented to predict accretion and erosion trends in this bay, which could have an impact on the mobility of researchers and tourists. New historical orthophotos and spatio-temporal differences between digital elevation and bathymetric models were used for validation purposes. The model reveals that the south-facing coast is more susceptible to erosion, while the east- or west-facing coast experiences sedimentation. A visual study for the periods 1970–2003 and 2003–2020 in Port Foster obtained similar annual erosion/accretion lineal rates (0.3–2 m/year) in the areas not affected by the last eruptive period, as well as increases of 0.023 km2/year and 0.028 km2/year of the inner bay and coastal sedimentation rates of 0.007 km2/year and 0.002 km2/year, respectively. Only part of the significant total volume loss is received within the bay, including its own erosion, and accumulates on the bay bottom. This is largely because the volume input is composed of snow, and it is also due to the transfer of material outside to balance the figures.

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Section: Digital Bathymetry Modelsmentioning

confidence: 99%

Evaluation and Modelling of the Coastal Geomorphological Changes of Deception Island since the 1970 Eruption and Its Involvement in Research Activity

Torrecillas,

Zarzuelo,

de la Fuente

et al. 2024

Remote Sensing

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Applications of unmanned aerial vehicles in Antarctic environmental research

Tovar-Sánchez

Román

Roque-Atienza

et al. 2021

Sci Rep

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Antarctica plays a fundamental role in the Earth's climate, oceanic circulation and global ecosystem. It is a priority and a scientific challenge to understand its functioning and responses under different scenarios of global warming. However, extreme environmental conditions, seasonality and isolation hampers the efforts to achieve a comprehensive understanding of the physical, biological, chemical and geological processes taking place in Antarctica. Here we present unmanned aerial vehicles (UAVs) as feasible, rapid and accurate tools for environmental and wildlife research in Antarctica. UAV surveys were carried out on Deception Island (South Shetland Islands) using visible, multispectral and thermal sensors, and a water sampling device to develop precise thematic ecological maps, detect anomalous thermal zones, identify and census wildlife, build 3D images of geometrically complex geological formations, and sample dissolved chemicals (< 0.22 µm) waters from inaccessible or protected areas.

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Evaluation and Modelling of the Coastal Geomorphological Changes of Deception Island Since 1970 Eruption and Its Involvement in Research Activity

Torrecillas,

Zarzuelo,

Fuente

et al. 2023

Preprint

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Deception Island is an active volcano with a submerged caldera open to the sea, giving it a horseshoe-shaped structure. Several post-caldera-collapsed volcanic events, as well as hydrodynamics within this natural bay, have modified its inner coastline, shaping new tephra deposits and altering the landscape. A hydrodynamic model is presented to predict accretion and erosion trends on the coast, which impact the mobility of researchers and tourists, whether on foot or by boat. Historical orthophoto images and spatiotemporal differences in digital elevation and bathymetric models have been used for validation purposes. The model reveals that the south-facing coast is more susceptible to erosion, while the east-west-facing coast experiences sedimentation. However, a visual study of the coastline has indicated erosion ratios in cliff areas in sedimentary zones. This is likely due to the erosive effect caused by ice floe fragments accumulating in these areas due to wave action. Only a portion of the significant total loss of surface material is received within the bay, including its own erosion, and accumulates on the bay's floor. This is partially due to the volume being composed of snow, and there is also a transfer of material to the exterior to balance the figures.

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Formation of Stanley Patch volcanic cone: New insights into the evolution of Deception Island caldera (Antarctica)

Cited by 3 publications

References 96 publications

Evaluation and Modelling of the Coastal Geomorphological Changes of Deception Island since the 1970 Eruption and Its Involvement in Research Activity

Evaluation and Modelling of the Coastal Geomorphological Changes of Deception Island since the 1970 Eruption and Its Involvement in Research Activity

Applications of unmanned aerial vehicles in Antarctic environmental research

Evaluation and Modelling of the Coastal Geomorphological Changes of Deception Island Since 1970 Eruption and Its Involvement in Research Activity

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