Browsing by Author "Catalán, Patricio A."
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- ItemA new remote predictor of wave reflection based on runup asymmetry(2019) Almar, Rafael; Blenkinsopp, Chris; Almeida, Luis Pedro; Catalán, Patricio A.; Bergsma, Erwin; Cienfuegos Carrasco, Rodrigo Alberto; TrungViet, Nguyen
- ItemField Survey of the 27 February 2010 Chile Tsunami(2011) Fritz, Hermann M.; Petroff, Catherine M.; Catalán, Patricio A.; Cienfuegos Carrasco, Rodrigo Alberto; Winckler, Patricio; Kalligeris, Nikos; Weiss, Robert; Barrientos, Sergio E.; Meneses, Gianina; Valderas-Bermejo, Carolina; Ebeling, Carl; Papadopoulos, Athanassios; Contreras, Manuel; Almar, Rafael; Domínguez, Juan C.; Synolakis, Costas E.On 27 February 2010, a magnitude M-w = 8.8 earthquake occurred off the coast of Chile's Maule region causing substantial damage and loss of life. Ancestral tsunami knowledge from the 1960 event combined with education and evacuation exercises prompted most coastal residents to spontaneously evacuate after the earthquake. Many of the tsunami victims were tourists in coastal campgrounds. The international tsunami survey team (ITST) was deployed within days of the event and surveyed 800 km of coastline from Quintero to Mehuin and the Pacific Islands of Santa Maria, Mocha, Juan Fernandez Archipelago, and Rapa Nui (Easter). The collected survey data include more than 400 tsunami flow depth, runup and coastal uplift measurements. The tsunami peaked with a localized runup of 29 m on a coastal bluff at Constitucion. The observed runup distributions exhibit significant variations on local and regional scales. Observations from the 2010 and 1960 Chile tsunamis are compared.
- ItemForward energy grade line analysis for tsunami inundation mapping(2025) Estrada Carrasco, María Fernanda; Cienfuegos Carrasco, Rodrigo Alberto; Urrutia, Alejandro; Catalán, Patricio A.; Winckler, PatricioA simplified model using 1D topobathymetric profiles for generating tsunami inundation maps is implemented and evaluated. The approach is a modification of the ASCE Energy Grade Line Analysis, that allows estimation of the maximum inundation distances using an iterative method. The modified methodology is implemented in three coastal cities in central Chile and compared with a database of 5400 full tsunami simulations obtained from a Nonlinear Shallow Water Equations solver. The key parameter of the model is based on the Froude number, for which three parameterizations and a range of values are tested. Results show that errors in the estimation of the areal extent of the inundation can be as low as 4%, after calibration. However, calibration is site specific and the optimal solution depends on the geographical characteristics of the area of interest. A sensitivity analysis based on the aleatoric sampling of the full tsunami simulation database show that as little as 100 inundation maps are required to perform the calibration of the model. This is a manageable number that offers reduced computational costs when compared with full tsunami simulations, and even those required to train other surrogate models using machine learning.
- ItemIncorporating wave-breaking data in the calibration of a Boussinesq-type wave model(ELSEVIER, 2021) Catalán, Patricio A.; Cienfuegos Carrasco, Rodrigo Alberto; Moris, Joaquin P.Wave breaking is one of the main forcing mechanisms in coastal hydrodynamics, driving mean water levels and currents. Its accurate representation and modeling is therefore essential to develop a thorough understanding and predictive capabilities. In this
- ItemObservations and Modeling of the 27 February 2010 Tsunami in Chile(ASCE Library, 2011) Fritz, Hermann M.; Synolakis, Costas E.; Petroff, Catherine M.; Catalán, Patricio A.; Cienfuegos Carrasco, Rodrigo Alberto; Winckler, Patricio; Kalligeris, Nikos; Weiss, Robert; Meneses, Gianina; Valderas-Bermejo, Carolina; Ebeling, Carl; Papadopoulos, Athanassios; Contreras, Manuel; Almar, Rafael; Domínguez, Juan C.; Barrientos, Sergio E.On February 27, 2010, a magnitude Mw = 8.8 earthquake occurred off the coast of Chile's Maule region causing substantial damage and loss of life. Ancestral tsunami knowledge from the 1960 event combined with education and evacuation exercises prompted most coastal residents to spontaneously evacuate after the earthquake. Many of the tsunami victims were tourists in coastal campgrounds. The international tsunami survey team (ITST) was deployed within days of the event and surveyed 800 km of coastline from Quintero to Mehuín and the Pacific Islands of Santa María, Mocha, Juan Fernández Archipelago, and Rapa Nui (Easter). The collected survey data include more than 400 tsunami flow depth, runup and coastal uplift measurements. The tsunami peaked with a localized runup of 29 m on a coastal bluff at Constitución. The observed runup distributions exhibit significant variations on local and regional scales.
- ItemSoliton gas dynamics and rogue wave enhancement in a natural coastal environment(2025) Cienfuegos, Rodrigo; Catalán, Patricio A.; Flores, Raúl P.; Guerra, Maricarmen; Lucero, Felipe; Galaz, José; Wahls, Sander; Díaz, Paola; Gómez, Rodolfo; Esparza, CésarWe document a field experiment in which a path to strongly interacting soliton gas dynamics is observed within an intermittently open/closed estuary. We show that the shallow estuary mouth acts as a low-pass filter for incoming ocean waves, damping energy within the swell frequency band (0.04–1 Hz) and allowing surf-zone generated infragravity waves (frequency band 0.004–0.04 Hz) to enter the semienclosed shallow lagoon formed near the estuary mouth. These long waves penetrate under highly nonlinear conditions with Ursell numbers consistent with multisoliton fission regimes. The 𝑘–𝜔 spectrum of the incident wave trains is consistent with solitonic kinematics, demonstrating that solitons are released by the fission of incoming infragravity waves at the lagoon entrance. Continuous injection of solitonic wave trains and intense wave-wave interactions enhanced by the shallow and gradually varying bathymetry within the estuary lagoon lead to a quasistationary soliton gas regime with a substantially increased probability of rogue wave occurrence compared with linear wave theory. The Korteweg-de Vries nonlinear Fourier transform reveals that nearly half of the measured signal energy is explained by solitonic modes, confirming the key role that solitons have in enhancing rogue wave emergence in natural coastal settings.
- ItemThe 1 April 2014 Pisagua tsunami : observations and modeling(2015) Catalán, Patricio A.; Aránguiz, Rafael; González, Gabriel; Tomita, Takashi; Cienfuegos Carrasco, Rodrigo Alberto; González, Juan; Shrivastava, Mahesh N.; Kumagai, Kentaro; Mokrani, Cyril; Cortés, Pablo; Gubler, Alejandra
- ItemThe 16 September 2015 Chile Tsunami from the Post-Tsunami Survey and Numerical Modeling Perspectives(2016) Aránguiz, R.; González, G.; González, J.; Catalán, Patricio A.; Cienfuegos Carrasco, Rodrigo Alberto; Okuwaki, Ryo; Urra, Luisa; Contreras, Karla; Del Río, Ian; Rojas, Camilo
- ItemToward the Classification of Bays Based on Their Resonant Response to Tsunamis(2025) Catalán, Patricio A.; Cortés, Pablo I.; Sáez, Francisco; Carvajal, Matías; Cienfuegos Carrasco, Rodrigo AlbertoTsunami‐induced resonance has been a topic of significant interest. However, usually the focus isset in understanding the response from either specific or a few events, which may prevent generalization ofwhether strong bathymetric control occurs. Here, 19 locations and 16 tsunamis were analyzed using standardmethods. A set of statistical parameters was introduced to aid in the assessment, leading to the categorization ofbays in terms of their resonant capacities. Next, the morphology of these locations was analyzed to identify thetype of features driving this response. Adding to other well‐known features, it was found that the steepness ofthe headlands defining a bay in planform is relevant in isolating it from surrounding coasts, thereby enhancingits filtering capacity
- ItemWave runup video motion detection using the Radon Transform(2017) Almar, Rafael; Blenkinsopp, C.; Almeida, Luis Pedro; Cienfuegos Carrasco, Rodrigo Alberto; Catalán, Patricio A.