Rodrigo Eco

Permanent Scatterers Interferometric Synthetic Aperture Radar (PSinSAR) is a radar processing method for quantitative, high precision, multi-scale monitoring of land deformation. In the PSinSAR approach multiple acquisitions gathered repeatedly over time in the same target area are processed. For this work, we used 24 ENVISAT descending imageries f...

A Mw 7.2 earthquake devastated Bohol Island in the Central Philippines region on 15 October 2013 at 8:12 am. The temblor was associated with severe ground rupture, intense ground shaking and other earthquake hazards. Along with numerous landslides and sinkholes that formed during the event, the Bohol earthquake caused 222 deaths and massive destruc...

Heavy rains delivered by supertyphoon Durian from 29-30 November 2006 remobilized volcanic debris on the sou­thern and eastern slopes of Mayon Volcano, generating devastating lahars that caused severe loss of life and property in downstream communities. Floods and lahars from the intense rainfall overtopped river bends, breaching six dikes through...

In 2017 San Miguel Corporation proposed the construction of a ₱735-billion “New Manila International Airport” (NMIA), which would destroy 2,500 hectares of coastal environment in northern Manila Bay. Environmental impact assessments (EIAs) should evaluate such large-scale projects; as a scientific process EIAs arguably benefit certain social groups...

How to cite: Lagos, D. T., Eco, R. C., Rebadolla, L. J., Farin, F. A. B. (2022) Flooding and Subsidence Research: Bulacan Province, Northern Manila Bay Area, Philippines. Diamonds in the Delta, Technical Report. Flooding is one of the most common natural hazards that communities in Bulacan face. This is commonly linked to heavy rains, typhoons, st...

In October 2015, heavy rains brought by Typhoon Koppu generated landslides and debris flows in the municipalities of Bongabon, Laur, and Gabaldon in Nueva Ecija province. Satellite images and clusters of landslides show that most of the rain fell in the Sierra Madre mountains in Nueva Ecija and Aurora provinces. Landslides of rock, soil, and debris...

Extensive land subsidence in and around Metro Manila, largely from overuse of groundwater, is orders of magnitude more rapid than sea-level rise from global warming. It enhances the exposure of its residents to worsening floods and tidal incursions, and greatly exacerbates the storm-surge threat. Additionally, differential movements at pre-existing...

Coastal boulder fields provide clues to long‐term frequency‐magnitude patterns of coastal flooding events and have the potential to play an important role in coastal hazard assessment. Mapping boulders in the field is time and labour‐intensive, and work on intertidal reef platforms, as in the present study, is physically challenging. By addressing...

The Eastern Visayas region in the Philippines is significantly exposed to high-energy marine inundation events. It gets regularly hit by some of the strongest tropical cyclones on Earth, recently by Typhoon Haiyan (2013) or Typhoon Hagupit (2014), causing extreme waves at the coastline. The region is also closely located to the Philippine Trench an...

The handbook serves academic institutions as a reference work for formulating a DRRM action plan in a school or university campus setting, including the communities that may be located inside the campus. Containing the basic principles of the most important areas of DRRM and the guidelines for taking action, it is expected to provide a ready refere...

The Eastern Visayas region in the Philippines is hit by some of the most violent tropical cyclones on Earth on a regular basis, exemplified by Typhoon Haiyan, 7–9 November 2013, and a number of other category 4 and 5 events during the last decades. Moreover, strong earthquakes along the Philippine Trench have triggered several tsunamis in the histo...

The Eastern Visayas region in the Philippines is significantly exposed to different natural hazards including extreme-wave events. Due to its location in the tropical Northwestern Pacific Basin, it gets regularly hit by some of the strongest tropical cyclones on Earth, recently by Typhoon Haiyan, 7–9 November 2013, or Typhoon Hagupit, 6–8 December...

Persistent Scatterer Interferometric Synthetic Aperture Radar (PSInSAR) studies on the Bataan Volcanic Arc Complex , Philippines, reveal tectonic deformation of Natib Volcano associated with movement of the Lubao Fault. Differential movement of blocks alongside the north-northeast trending Lubao Fault, measured in terms of line-of-sight (LOS) chang...

Category 5 Super Typhoon Bopha, the world's worst storm of 2012, formed abnormally close to the Equator, and its landfall on Mindanao set the record proximity to the Equator for its category. Its torrential rains generated an enormous debris flow in the Mayo River watershed that swept away much of the village Andap in the New Bataan municipality, b...

Category 5 Super Typhoon Bopha, the world's worst storm of 2012, formed abnormally close to the Equator, and its landfall on Mindanao set the record proximity to the Equator for its category. Its torrential rains generated an enormous debris flow in the Mayo River watershed that swept away much of Andap village in New Bataan municipality, burying a...

Super typhoon Haiyan, considered as one of the most powerful storms recorded in 2013, devastated the central Philippines region on 8 November 2013 with damage amounting to more than USD 2 billion. Hardest hit is the province of Leyte which is located in central Philippines. Rehabilitation of the areas that were devastated requires detailed hazard m...

Mount Arayat is an inactive stratovolcano located in the plains of central Luzon, Philippines. It is a morphologically distinct cone that has ceased its constructional processes and is at a stage where erosional processes dominate. Using high-resolution digital terrain models (DTM) and freely available satellite imagery, details of its morphology a...

When Super Typhoon Haiyan struck the Philippines in November 2013, the province of Leyte was among the most heavily damaged. Detailed hazard susceptibility maps for Leyte–including storm surge, flood, and landslide hazard maps–that could have mitigated the damage by providing crucial information on possible hazards and their extent were not availab...

When Super Typhoon Haiyan struck the Philippines in November 2013, the province of Leyte was among the most heavily damaged. Detailed hazard susceptibility maps for Leyte-including storm surge, flood, and landslide hazard maps-that could have mitigated the damage by providing crucial information on possible hazards and their extent were not availab...

Debris flows are one of the most dangerous and destructive of all mass wasting phenomena. Travelling at speeds that range from 2 to 40 kilometers per hour, debris flows occur and get deposited at the base of a mountain drainage network, the same depositional area of alluvial fans. Debris flow and alluvial fan deposits in any given place are derived...

A devastating earthquake struck Bohol, Philippines, on 15 October 2013. The earthquake originated at 12 km depth from an unmapped reverse fault, which manifested on the surface for several kilometers and with maximum vertical displacement of 3 m. The earthquake resulted in 222 fatalities with damage to infrastructure estimated at USD 52.06 million....

A devastating earthquake struck Bohol, Philippines on 15 October 2013. The earthquake originated at 12 km depth from an unmapped reverse fault, which manifested on the surface for several kilometers and with maximum vertical displacement of 3 m. The earthquake resulted in 222 fatalities with damage to infrastructure estimated at US52.06 million. Wi...

On December 4, 2012, Super Typhoon Bopha wreaked havoc in the southern region of Mindanao, leaving 1,067 people dead and causing USD 800 million worth of damage. Classified as a Category 5 typhoon by the Joint Typhoon Warning Center (JTWC), Bopha brought intense rainfall and strong winds that triggered landslide and debris flows, particularly in Ba...

Last July 2012, the Department of Science and Technology, with the assistance of various research laboratories in the National Institute of Geological Sciences of the University of the Philippines, launched the Nationwide Operational Assessment of Hazards, or Project NOAH. Project NOAH is an aggregation of processed satellite images, weather radars...

Relative to the rest of the Philippine archipelago, the southern island of Mindanao is scarcely visited by extreme weather disturbances. However, on December 16, 2011, Tropical Storm Washi (local name: Sendong) made landfall at the eastern coast of Mindanao and moved steadily towards the northwest coast where it precipitated an accumulated rainfall...

The SW sector of Mount Natib, a potentially active volcano in the Bataan volcanic arc in western Luzon, is the site of a mothballed nuclear power plant that members of the national legislature have proposed to activate. Detailed geological fieldwork was conducted to assess the capability of the volcano and to identify any volcanic hazards it might...

The extent of ground deformation and subsidence in northern Metro Manila was examined using Persistent Scatterer Interferometric Synthetic Aperture Radar (PSInSAR) technique. Using the Stanford Method for Persistent Scatterers/Multi-Temporal InSAR (StaMPS/MTI) software, we processed 21 descending ENVISAT radar imageries taken from 2003 to 2006. The...