A5059005315- Geological and Tectonic Studies in Latin America
- Environmental and Cultural Studies in Latin America and Beyond
- Geological and Geochemical Analysis
- Environmental and Ecological Studies
- Atmospheric and Environmental Gas Dynamics
- Climate change and permafrost
- Atmospheric Ozone and Climate
- Geochemistry and Geologic Mapping
- Cryospheric studies and observations
- earthquake and tectonic studies
- Botany and Geology in Latin America and Caribbean
- Atmospheric chemistry and aerosols
- Geological and Geophysical Studies Worldwide
- Groundwater and Isotope Geochemistry
- Geology and Paleoclimatology Research
- High-pressure geophysics and materials
- Astro and Planetary Science
- Concrete and Cement Materials Research
- Clay minerals and soil interactions
- Spectroscopy and Laser Applications
- Satellite Image Processing and Photogrammetry
- Landslides and related hazards
- Arsenic contamination and mitigation
- Space Exploration and Technology
- Historical and socio-economic studies of Spain and related regions
Instituto Geológico Minero y Metalúrgico
2015-2024
Vulcan (United States)
2019
University of Sheffield
2019
Abstract. Volcanic plumes are common and far-reaching manifestations of volcanic activity during between eruptions. Observations the rate emission composition essential to recognize and, in some cases, predict state activity. Measurements size location important assess impact from sporadic or localized events persistent widespread processes climatic environmental importance. These observations provide information on volatile budgets Earth, chemical evolution magmas, atmospheric circulation...
Abstract We used a large set of satellite- (visible, infrared, and radar images from Planetscope, MODIS, VIIRS, Sentinel2, Landsat 8, Sentinel 1) ground-based data (optical images, SO 2 flux, shallow seismicity) to describe characterize the activity Sabancaya volcano during unrest eruption phases that occurred between 2012 2020. The phase (2012–2016) was characterized by increasing gas thermal sourced convective magma column rising along with remnants buried plug still permeable fluid flow....
Abstract Water (H 2 O) is by far the most abundant volcanic volatile species and plays a predominant role in driving eruptions. However, numerous difficulties associated with making accurate measurements of water vapor plumes have limited their use as diagnostic tool. Here we present first detection plume using passive visible‐light differential optical absorption spectroscopy (DOAS). Ultraviolet DOAS were made on 21 May 2016 at Sabancaya Volcano, Peru. We find that Sabancaya's contained an...
Abstract Tropical high‐mountain permafrost has a unique thermal regime due to its exposure strong solar radiation and rough surface snow morphology, which reduce ground heat transfer from the surface. Latent higher albedo that occur during snow‐covered season contribute positive feedback supports presence of permafrost. This preliminary study reports on state characteristics tropical mountain in Peru. work also evaluates potential combined impact El Niño–Southern Oscillation (ENSO) Coropuna...
This study combines new noble gas data from fluid inclusions in minerals Sabancaya, Ubinas, and El Misti (CVZ, Peru) Villarica (South Chile, SVZ) with a revised compilation the Andes, to identify systematic along arc variations helium isotope compositions.We find 3 He/ 4 He ratios varying 8.8 R A (Colombia) 7.4 (Ecuador) within NVZ, only as high 6.4 CVZ (R is atmospheric ratio of 1.39 × 10 -6 ).These distinct compositions cannot be explained by variable radiogenic production via slab...
We used low-cost Raspberry Pi ultraviolet (UV) cameras to measure sulphur dioxide (SO2) fluxes from Sabancaya volcano, Peru, during eruptive activity on 27 April 2018. Light dilution corrections were made by operating instruments at two distances simultaneously. Estimated SO2 of 27.1 kgs-1 are higher than previously reported, likely due the current episode (ongoing since November 2016). Each event included frequent (2–3 per minute), ash-rich emissions, forming gas pulses with masses 3.0–8.2...
Abstract This study provides a comprehensive characterization of various hydrothermal systems in Southern Peru ranging from the faulted Precordillera's steep topography up to volcanic High Cordillera (>4,000 m asl). The objective is investigate thermal anomalies that may potentially serve as new geothermal resources. Our integrated approach combines: (a) geochemistry 14 hot springs sampled throughout Tacna region, and (b) 3D numerical modeling coupled groundwater heat transfer considering...
Urban development in the areas surrounding active volcanoes has led to increasing risks southern Peru. In order evaluate hazard, Instituto Geológico, Minero y Metalúrgico (INGEMMET) created a Volcano Observatory (OVI) carry out detailed geological investigations understand eruption histories and provide volcanic hazard maps. The generation of information on allowed identification scenarios zoning potentially impacted areas. This also OVI implement surveillance networks giving priority that...
The freezing point and supercooling process are discussed for their impact on the traditional Andean freeze-dried potatoes called chuño. depends potato species, but typically it is slightly below zero to −3 °C; always occurs before freeze, lowest (LSP) can reach −4.3 °C. Recently many of fields near Lake Titicaca not cold enough freeze tubers chuño, loss this food source will be critical in future.
This research focuses on the search for materials susceptible to being alkaline activated generation of new geopolymer (alternative fly ash and blast furnace slag). The potential use volcanic from Ubinas volcano (located in Moquegua, Peru) synthesis has been studied. NaOH solution used different concentrations activation ashes. effect concentration mechanical properties (compressive strength porosity) hardened specimens analyzed. Systems with solutions 6, 9 12M shown a good performance due...
<p>Ubinas is a stratovolcano located in the Central Volcanic Zone of Andes. It one most active volcanoes Peru, with more than 26 eruptive episodes recorded last 500 years (VEI 1-3). Its latest eruption began early 2019, whit occurrence some distal VT seismicity accompanied by low levels LP and sometimes high frequency seismic signals associated rockfalls. Concurrently, SO<sub>2</sub> emissions increased from few hundred to over 1,000 t/d between...