@article{karanci_velasquez-montoya_paniagua-arroyave_adams_overton_2018, title={Beach Management Practices and Occupation Dynamics: An Agent-Based Modeling Study for the Coastal Town of Nags Head, NC, USA}, volume={24}, ISBN={["978-3-319-58303-7"]}, ISSN={["2211-0585"]}, DOI={10.1007/978-3-319-58304-4_19}, abstractNote={The analysis of interactions between human and natural systems is crucial for sound beach management practices. Those interactions can be simulated via agent-based modeling. Nevertheless, more work is needed to identify and understand model capabilities prior to societal implementations. This study presents the application of an agent-based model in the coastal town of Nags Head, NC USA. The case study focuses on the influence of storm arrival patterns and soft-engineering design alternatives on town occupation dynamics. The agent-based model consists of three interactive sub-models: (1) Natural Processes and Coastal Landforms, (2) Beach Management, and (3) Household Decisions. Modeling results indicate that sea level rise will exacerbate storm damages and could lead to a declining town population. In addition, analysis of occupancy with soft-engineering design alternatives suggests that population in Nags Head maximizes when economic benefits and protection from both, dunes and beaches, are balanced. Our results serve to exemplify the usage and capabilities of an agent-based model for beach management practices in coastal towns subjected to storms and sea level rise. Application of the model provides valuable insights of the system that can ultimately be used by decision-makers and town managers.}, journal={BEACH MANAGEMENT TOOLS - CONCEPTS, METHODOLOGIES AND CASE STUDIES}, author={Karanci, Ayse and Velasquez-Montoya, Liliana and Paniagua-Arroyave, Juan F. and Adams, Peter N. and Overton, Margery F.}, year={2018}, pages={373–395} }
 @article{escobar_velasquez-montoya_2018, title={Modeling the sediment dynamics in the gulf of Uraba colombian Caribbean sea}, volume={147}, ISSN={["1873-5258"]}, DOI={10.1016/j.oceaneng.2017.10.055}, abstractNote={The potential of the gulf of Urabá to hold a multi-purpose port motivated a sediment dynamics study to describe the seasonal sediment concentration patterns in this tropical region. Challenges addressed in this study include a complex three-dimensional flow pattern in a tropical estuary and the lack of in-situ measurements. To overcome such challenges, this study completed: (i) Measurements of suspended sediment concentrations during two climatic seasons and an extreme event (2010–2011); (ii) Definition of boundary conditions from global databases; (iii) Qualitative analysis of sediment concentrations from satellite imagery; and (iv) integration of the previously mentioned steps to build a process-based 3D sediment transport model. Seasonal patterns of suspended sediment concentrations were identified and corroborated by the agreement between model results, satellite imagery and field measurements. During the calm rainy season, the Atrato River turbid plume extends northward and dominates the sediment dynamics in the gulf. On the other hand, during the dry season and extreme events, bed transport is enhanced and the river's plume and the littoral drift shift southwards.}, journal={OCEAN ENGINEERING}, author={Escobar, Carlos A. and Velasquez-Montoya, Liliana}, year={2018}, month={Jan}, pages={476–487} }
 @article{velasquez montoya_sciaudone_mitasova_overton_2018, title={Observation and modeling of the evolution of an ephemeral storm-induced inlet: Pea Island Breach, North Carolina, USA}, volume={156}, ISSN={0278-4343}, url={http://dx.doi.org/10.1016/j.csr.2018.02.002}, DOI={10.1016/j.csr.2018.02.002}, abstractNote={The Outer Banks of North Carolina is a wave-dominated barrier island system that has experienced the opening and closure of numerous inlets in the last four centuries. The most recent of those inlets formed after the breaching of Pea Island during Hurricane Irene in 2011. The Pea Island Breach experienced a rapid evolution including episodic curvature of the main channel, rotation of the ebb channel, shoaling, widening by Hurricane Sandy in 2012, and finally closing before the summer of 2013. Studying the life cycle of Pea Island Breach contributes to understanding the behavior of ephemeral inlets in breaching-prone regions. This topic has gained relevance due to rising sea levels, a phenomenon that increases the chances of ephemeral inlet formation during extreme events. This study explores the spatiotemporal effects of tides, waves, and storms on flow velocities and morphology of the breach by means of remotely sensed data, geospatial metrics, and a numerical model. The combined use of observations and results from modeling experiments allowed building a conceptual model to explain the life cycle of Pea Island Breach. Wave seasonality dominated the morphological evolution of the inlet by controlling the magnitude and direction of the longshore current that continuously built transient spits at both sides of the breach. Sensitivity analysis to external forcings indicates that ocean waves can modify water levels and velocities in the back barrier. Sound-side storm surge regulates overall growth rate, duration, and decay of peak water levels entering the inlet during extreme events.}, journal={Continental Shelf Research}, publisher={Elsevier BV}, author={Velasquez Montoya, Liliana and Sciaudone, Elizabeth J. and Mitasova, Helena and Overton, Margery F.}, year={2018}, month={Mar}, pages={55–69} }