Geological hazards of SW Natib Volcano, site of the Bataan Nuclear Power Plant, the Philippines

Lagmay, A. M. F. A.; Rodolfo, Raymond S.; Cabria, Hillel B.; Soria, Janneli Lea A.; Zamora, Peter B.; Abon, C. C.; Lit, Catherine; Lapus, Mark R.; Paguican, Engielle Mae; Bato, Mary-Grace; Tiu, Glacialle; Obille, Eligio C; Pellejera, N. E. B.; Francisco, Paul Clarence M.; Eco, R. C.; Aviso, Jamie A

doi:10.1144/sp361.13

Cited by 7 publications

(5 citation statements)

References 27 publications

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“…This is despite the fact that DEMs such as those from SRTM and ASTER are being used as major sources of topographic information for many applications including hydrological analysis and simulations (e.g., Jaranilla-Sanchez et al, 2011;Santillan et al, 2011;Sarmiento et al, 2012;Clutario and David, 2014;Chen and Senarath, 2014), flood modelling and hazard mapping (e.g., Abon et al, 2011;Ignacio and Henry, 2013), geological hazard analysis (e.g., Lagmay et al, 2012), and landslide mapping characterization (e.g., Evans et al, 2006;Oh and Lee, 2011). The quality and accuracy of the DEMs used and their suitability for these applications were not adequately assessed.…”

Section: Introductionmentioning

confidence: 99%

Vertical Accuracy Assessment of 30-M Resolution Alos, Aster, and SRTM Global Dems Over Northeastern Mindanao, Philippines

Santillan¹,

Makinano-Santillan²

2016

Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci.

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ABSTRACT:The ALOS World 3D -30m (AW3D30), ASTER Global DEM Version 2 (GDEM2), and SRTM-30m are Digital Elevation Models (DEMs) that have been made available to the general public free of charge. An important feature of these DEMs is their unprecedented horizontal resolution of 30-m and almost global coverage. The very recent release of these DEMs, particularly AW3D30 and SRTM30m, calls for opportunities for the conduct of localized assessment of the DEM's quality and accuracy to verify their suitability for a wide range of applications in hydrology, geomorphology, archaelogy, and many others. In this study, we conducted a vertical accuracy assessment of these DEMs by comparing the elevation of 274 control points scattered over various sites in northeastern Mindanao, Philippines. The elevations of these control points (referred to the Mean Sea Level, MSL) were obtained through 3rd order differential levelling using a high precision digital level, and their horizontal positions measured using a global positioning system (GPS) receiver. These control points are representative of five (5) land-cover classes namely brushland (45 points), built-up (32), cultivated areas (97), dense vegetation (74), and grassland (26). Results showed that AW3D30 has the lowest Root Mean Square Error (RMSE) of 5.68 m, followed by SRTM-30m (RMSE = 8.28 m), and ASTER GDEM2 (RMSE = 11.98 m). While all the three DEMs overestimated the true ground elevations, the mean and standard deviations of the differences in elevations were found to be lower in AW3D30 compared to SRTM-30m and ASTER GDEM2. The superiority of AW3D30 over the other two DEMS was also found to be consistent even under different landcover types, with AW3D30's RMSEs ranging from 4.29 m (built-up) to 6.75 m (dense vegetation). For SRTM-30m, the RMSE ranges from 5.91 m (built-up) to 10.42 m (brushland); for ASTER GDEM2, the RMSE ranges from 9.27 m (brushland) to 14.88 m (dense vegetation). The results of the vertical accuracy assessment suggest that the AW3D30 is more accurate than SRTM-30m and ASTER GDEM2, at least for the areas considered in this study. On the other hand, the tendencies of the three DEMs to overestimate true ground elevation can be considered an important finding that users of the DEMs in the Philippines should be aware of, and must be considered into decisions regarding use of these data products in various applications.

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Section: Introductionmentioning

confidence: 99%

Vertical Accuracy Assessment of 30-M Resolution Alos, Aster, and SRTM Global Dems Over Northeastern Mindanao, Philippines

Santillan¹,

Makinano-Santillan²

2016

Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci.

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“…Although numerous studies have been carried out for accuracy assessments of DEMs in different parts of the world using various kinds of reference data and reference DEMs (e.g., Arefi and Reinartz, 2011;Hirt et al, 2010;Gomez, et al, 2012;Li et al, 2013;Athmania and Achour, 2014;Suwandana et al, 2014;Jing et al, 2014;Ioannidis et al, 2014;Satge et al, 2015), very few * Corresponding author have been conducted in the Philippines (e.g., Fabila and Paringit, 2012;Meneses III, 2013). This is despite the fact that DEMs such as those from SRTM and ASTER are being used as major sources of topographic information for many applications including hydrological analysis and simulations (e.g., Jaranilla-Sanchez et al, 2011;Santillan et al, 2011;Sarmiento et al, 2012;Clutario and David, 2014;Chen and Senarath, 2014), flood modelling and hazard mapping (e.g., Abon et al, 2011;Ignacio and Henry, 2013), geological hazard analysis (e.g., Lagmay et al, 2012), and landslide mapping characterization (e.g., Evans et al, 2006;Oh and Lee, 2011). The quality and accuracy of the DEMs used and their suitability for these applications were not adequately assessed.…”

Section: Introductionmentioning

confidence: 99%

Vertical Accuracy Assessment of 30-M Resolution Alos, Aster, and SRTM Global Dems Over Northeastern Mindanao, Philippines

Santillan

Makinano-Santillan

2016

Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci.

View full text Add to dashboard Cite

The ALOS World 3D – 30 m (AW3D30), ASTER Global DEM Version 2 (GDEM2), and SRTM-30 m are Digital Elevation Models (DEMs) that have been made available to the general public free of charge. An important feature of these DEMs is their unprecedented horizontal resolution of 30-m and almost global coverage. The very recent release of these DEMs, particularly AW3D30 and SRTM- 30 m, calls for opportunities for the conduct of localized assessment of the DEM’s quality and accuracy to verify their suitability for a wide range of applications in hydrology, geomorphology, archaelogy, and many others. In this study, we conducted a vertical accuracy assessment of these DEMs by comparing the elevation of 274 control points scattered over various sites in northeastern Mindanao, Philippines. The elevations of these control points (referred to the Mean Sea Level, MSL) were obtained through 3rd order differential levelling using a high precision digital level, and their horizontal positions measured using a global positioning system (GPS) receiver. These control points are representative of five (5) land-cover classes namely brushland (45 points), built-up (32), cultivated areas (97), dense vegetation (74), and grassland (26). Results showed that AW3D30 has the lowest Root Mean Square Error (RMSE) of 5.68 m, followed by SRTM-30 m (RMSE = 8.28 m), and ASTER GDEM2 (RMSE = 11.98 m). While all the three DEMs overestimated the true ground elevations, the mean and standard deviations of the differences in elevations were found to be lower in AW3D30 compared to SRTM-30 m and ASTER GDEM2. The superiority of AW3D30 over the other two DEMS was also found to be consistent even under different landcover types, with AW3D30's RMSEs ranging from 4.29 m (built-up) to 6.75 m (dense vegetation). For SRTM-30 m, the RMSE ranges from 5.91 m (built-up) to 10.42 m (brushland); for ASTER GDEM2, the RMSE ranges from 9.27 m (brushland) to 14.88 m (dense vegetation). The results of the vertical accuracy assessment suggest that the AW3D30 is more accurate than SRTM-30 m and ASTER GDEM2, at least for the areas considered in this study. On the other hand, the tendencies of the three DEMs to overestimate true ground elevation can be considered an important finding that users of the DEMs in the Philippines should be aware of, and must be considered into decisions regarding use of these data products in various applications.

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“…Natib, exposing it to volcanic hazards. Whereas Venida and Reyes [52] provided justifications for the safety of BNPP's location, Lagmay et al [53] have also published evidence that the BNPP's location is unsafe as it is exposed to geological hazards. Yet in an interview for their systematic study using electrical resistivity, seismic refraction and radon gas detection, Arcilla et al [54] claimed that there are no active faults that lie beneath the BNPP.…”

Section: Environmental Barriersmentioning

confidence: 99%

“…Previous research suggests that the BNPP has general hazard concerns, such as its proximity to the potentially active volcano, Mt. Natib, which is aligned with the Lubao Fault whose traces have high radon emissions [53]. Alternatively, the sub-region of Cagayan in Northern Luzon is deemed a promising site for an NPP in the Philippines.…”

Section: Selection Of Potential Sitementioning

confidence: 99%

Perspectives on the Barriers to Nuclear Power Generation in the Philippines: Prospects for Directions in Energy Research in the Global South

et al. 2022

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This paper offers a discussion on the social dimensions of the barriers to nuclear power generation in the country. The aim of this paper is to contribute to the literature by identifying the barriers to nuclear power generation in the Philippines and offering perspectives on the social relevance of potentially adding nuclear sources to the country’s energy mix. Given the contemporary relevance of the energy transitions globally, this work builds on the available sources over the past decade concerning nuclear energy technology in the Philippines and provides further discussions on the diverse barriers to the country’s energy transition pathway. Findings present barriers related to politics, policy, infrastructure, technical capacities, environment and information. The differences in priorities and values concerning nuclear energy reflect that the barriers to nuclear energy generation in the Philippines are social as much as technical. Based on the findings and descriptions of the current discussions on Philippine energy generation, this work provides some key points for consideration in order to deploy nuclear power plants in the country. These recommendations, however, are not definitive measures and are still subject to local conditions that may arise. This study hopes to be instructive to other countries in terms of further reflecting on the social dimensions of the barriers to nuclear energy generation.

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Geological hazards of SW Natib Volcano, site of the Bataan Nuclear Power Plant, the Philippines

Cited by 7 publications

References 27 publications

Vertical Accuracy Assessment of 30-M Resolution Alos, Aster, and SRTM Global Dems Over Northeastern Mindanao, Philippines

Vertical Accuracy Assessment of 30-M Resolution Alos, Aster, and SRTM Global Dems Over Northeastern Mindanao, Philippines

Vertical Accuracy Assessment of 30-M Resolution Alos, Aster, and SRTM Global Dems Over Northeastern Mindanao, Philippines

Perspectives on the Barriers to Nuclear Power Generation in the Philippines: Prospects for Directions in Energy Research in the Global South

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