Papers by Maria Ines Rosana Balangue-Tarriela
Scientific Reports, 2021
After 43 years of repose, Taal Volcano erupted on 12 January 2020 forming hazardous base surges. ... more After 43 years of repose, Taal Volcano erupted on 12 January 2020 forming hazardous base surges. Using field, remote sensing (i.e. UAV and LiDAR), and numerical methods, we gathered primary data to generate well-constrained observed information on dune bedform characteristics, impact dynamic pressures and velocities of base surges. This is to advance our knowledge on this type of hazard to understand and evaluate its consequences and risks. The dilute and wet surges traveled at 50-60 ms−1 near the crater rim and decelerated before making impact on coastal communities with dynamic pressures of at least 1.7 kPa. The base surges killed more than a thousand livestock in the southeast of Taal Volcano Island, and then traveled another ~ 600 m offshore. This work is a rare document of a complete, fresh, and practically undisturbed base surge deposit, important in the study of dune deposits formed by volcanic and other processes on Earth and other planets.
Located in the Circum-Pacific Rim of Fire, the Philippines is endowed with both mineral and energ... more Located in the Circum-Pacific Rim of Fire, the Philippines is endowed with both mineral and energy resources. Philippines ranks second in the world (next to the United States of America) in using geothermal energy for electricity generation. From seven (7) production fields, a total of 1848MWe of electricity is produced which constitutes nearly 12% of the electricity requirements in the country. The success of the Philippines in exploiting geothermal energy may be attributed on good governance and commendable government-industry collaboration.
Journal of Hydrology: Regional Studies, 2017
Study region Calamba and Los Banos in Laguna Province, Philippines lie between the northern part ... more Study region Calamba and Los Banos in Laguna Province, Philippines lie between the northern part of Mt. Makiling and north shore of Laguna de Bay. Study focus One significant activity in Laguna province is the development of the water resorts which includes hot springs resorts and spas. Presence of hot springs is due to the geothermal activities in the area. This study seeks to explore the nature and possible impacts of groundwater utilization in hot spring resorts in Calamba and Los Banos in Laguna Province. This study also analyzes the issues and challenges in the implementation of policies and laws to regulate water use in these resorts. New hydrological insights for the region These water resorts are estimated to consume large volume of groundwater which could result to over-extraction and decrease in groundwater quantity. However, monitoring and regulation of usage is difficult as most of these resorts operate without water use permits. If groundwater use is left unregulated, w...
Journal of Mineralogical and Petrological Sciences
Manguao Basalt is a Plio-Pleistocene basaltic lava flow located on the northeastern edge of Palaw... more Manguao Basalt is a Plio-Pleistocene basaltic lava flow located on the northeastern edge of Palawan Island, Philippines. The absence of active trenches surrounding the Palawan Continental Block (PCB) poses a challenge regarding the nature and origin of magmatism in the region. This study presents the petrographic and geochemical character of Manguao Basalt, as well as provides insights to the melt formation beneath the PCB. Manguao Basalt samples are olivine-phyric with minor pyroxenes, set in a plagioclase-dominated microcrystalline groundmass. Average bulk-rock major element composition of Manguao Basalt shows similarities to common olivine basalt tholeiite. Petrographic observations of the phenocrysts, however, show the unusual precedence of pyroxenes in the crystallization sequence. Calculated formation temperatures and pressures of the modal assemblage are consistent with this idea of early pyroxene formation. Simulations of mantle melting using the MELTS program show the formation of pyroxene-saturated primitive liquids. The evolution of these primitive liquids reaches similarities with Manguao Basalt composition at 1230-1260°C. Simulations of equilibrium and fractional crystallization demonstrate the formation of olivine or orthopyroxene as the first crystals. However, the simulations done at equilibrium conditions are more consistent with the observed mineral chemistry of pyroxene phenocrysts in Manguao Basalt. Hence, maintaining the equilibrium between the source and melt is crucial for replicating the observed pyroxene chemistry. Magmatic underplating provides an excellent model for visualizing the melting and crystallization processes beneath the PCB. The model is also consistent with the narrative of other magmatic units in northern Palawan (e.g., Capoas Granite). The significant findings of this study contribute to the understanding of the tectonic evolution of the PCB.
Geothermics, 2004
... Maria Ines Rosana Balangue-Tarriela Corresponding Author Contact Information , a , E-mail The... more ... Maria Ines Rosana Balangue-Tarriela Corresponding Author Contact Information , a , E-mail The Corresponding Author. ... Additional data were generated by detailed petrography investigations, X-ray diffraction analysis of clay minerals, and electron microprobe analysis ...
Scientific Reports, 2021
After 43 years of repose, Taal Volcano erupted on 12 January 2020 forming hazardous base surges. ... more After 43 years of repose, Taal Volcano erupted on 12 January 2020 forming hazardous base surges. Using field, remote sensing (i.e. UAV and LiDAR), and numerical methods, we gathered primary data to generate well-constrained observed information on dune bedform characteristics, impact dynamic pressures and velocities of base surges. This is to advance our knowledge on this type of hazard to understand and evaluate its consequences and risks. The dilute and wet surges traveled at 50-60 ms −1 near the crater rim and decelerated before making impact on coastal communities with dynamic pressures of at least 1.7 kPa. The base surges killed more than a thousand livestock in the southeast of Taal Volcano Island, and then traveled another ~ 600 m offshore. This work is a rare document of a complete, fresh, and practically undisturbed base surge deposit, important in the study of dune deposits formed by volcanic and other processes on Earth and other planets.
Journal of Mineralogical and Petrological Sciences
Scientia Bruneiana
Petrography is one of a series of standard tests used to assess an aggregate’s components, mechan... more Petrography is one of a series of standard tests used to assess an aggregate’s components, mechanical qualities, durability, chemical stability, and alkali reactivity. In this study, aggregate materials were collected from rock exposures and/or alluvial deposits from four areas near Metro Manila, Philippines: Bulacan, Rizal, Pampanga, and Zambales. Transmitted light microscopy was conducted to identify rock types and characterise physical and chemical properties that may present potential problems when used as aggregate materials. The results show that the aggregates vary in terms of rock types and alteration type. Samples from Bulacan are mostly porphyritic basalt and fine to coarse-grained sandstone with veinlets of silica and carbonate. The presence of cavities and microfractures caused mainly by vesicles from the volcanic rocks was also observed. Rizal aggregates are composed predominantly of chloritized basalts and andesites with minor clastic rocks and tuffs. The aggregates fr...
Geothermics, 2004
... Maria Ines Rosana Balangue-Tarriela Corresponding Author Contact Information , a , E-mail The... more ... Maria Ines Rosana Balangue-Tarriela Corresponding Author Contact Information , a , E-mail The Corresponding Author. ... Additional data were generated by detailed petrography investigations, X-ray diffraction analysis of clay minerals, and electron microprobe analysis ...
Journal of Mineralogical and Petrological Sciences
Manguao Basalt is a Plio-Pleistocene basaltic lava flow located on the northeastern edge of Palaw... more Manguao Basalt is a Plio-Pleistocene basaltic lava flow located on the northeastern edge of Palawan Island, Philippines. The absence of active trenches surrounding the Palawan Continental Block (PCB) poses a challenge regarding the nature and origin of magmatism in the region. This study presents the petrographic and geochemical character of Manguao Basalt, as well as provides insights to the melt formation beneath the PCB. Manguao Basalt samples are olivine-phyric with minor pyroxenes, set in a plagioclase-dominated microcrystalline groundmass. Average bulk-rock major element composition of Manguao Basalt shows similarities to common olivine basalt tholeiite. Petrographic observations of the phenocrysts, however, show the unusual precedence of pyroxenes in the crystallization sequence. Calculated formation temperatures and pressures of the modal assemblage are consistent with this idea of early pyroxene formation. Simulations of mantle melting using the MELTS program show the formation of pyroxene-saturated primitive liquids. The evolution of these primitive liquids reaches similarities with Manguao Basalt composition at 1230-1260°C. Simulations of equilibrium and fractional crystallization demonstrate the formation of olivine or orthopyroxene as the first crystals. However, the simulations done at equilibrium conditions are more consistent with the observed mineral chemistry of pyroxene phenocrysts in Manguao Basalt. Hence, maintaining the equilibrium between the source and melt is crucial for replicating the observed pyroxene chemistry. Magmatic underplating provides an excellent model for visualizing the melting and crystallization processes beneath the PCB. The model is also consistent with the narrative of other magmatic units in northern Palawan (e.g., Capoas Granite). The significant findings of this study contribute to the understanding of the tectonic evolution of the PCB.
Philippine Journal of Science, 2018
In a data-poor, hazard-prone country like the Philippines, interpolating distant data points and ... more In a data-poor, hazard-prone country like the Philippines, interpolating distant data points and computer modelling have become the go-to methods for determining the hazards that may affect an area. The absence of monitoring stations and gauges necessitates the application of modelling techniques to build on the little data available and generate reliable hazard maps. In this study-the devastating Sep 2009 Tropical Cyclone Ketsana (local name: Ondoy) event, its atmospheric characteristics, and its effects near Mt. Makiling, Laguna-is analyzed utilizing two modelling software: the Weather Research and Forecasting (WRF) model to assess the amount of rainfall, and FLO-2D to map the flood hazard areas around the volcano using the output of the WRF. A lone meteorological observation station on Mt. Makiling provided rainfall data for comparison with the results of the meteorological and hydrological models. The WRF model yielded a mean rainfall amount in the study area of 129.92 mm over 24 h for the storm against the observed rainfall amount for the same duration at 182.3 mm from the meteorological station. The flood model using the WRF data yielded minimal inundated areas, while the flood model of the observed rainfall data showed several low-lying urban areas inundated by up to 1.5 m of floodwaters. Comparison with flood data collected by responding agencies and groups after the event shows good correlation of affected areas and flood heights, with discrepancies being attributed to the swelling of Laguna de Bay because of excess runoff from other surrounding provinces-a factor that the models could not consider. Despite this, the WRF model generated from global atmospheric data and the flood model using the WRF product appears as a feasible substitute in the absence of on-site observation points and monitoring stations.
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Papers by Maria Ines Rosana Balangue-Tarriela