Fotogrametría con drone para la identificación de riesgos hidrológicos del estiaje en la confluencia del rio Nanay, Itaya y Amazonas, Iquitos, Loreto 2024
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Date
2025-10-27
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Universidad Científica del Perú
Abstract
El presente trabajo, denominado "Fotogrametría con Drone para la Identificación de Riesgos Hidrológicos del Estiaje en la Confluencia del Río Nanay, Itaya y Amazonas, Iquitos, Loreto 2024", se realizó en el departamento de Loreto, provincia de Maynas, distrito de Punchana, el objetivo fue de aprovechar la fotogrametría o vuelo de drone para ayudar a determinar los tramos críticos que se generan en la época de estiaje en la confluencia del río Itaya sobre el gran río Amazonas, es decir, determinar el riesgo de vaciante extrema 2024 para la navegación fluvial. Como metodología se utilizó a la fotogrametría, específicamente, a los vuelos de drone en el cuadrante cercano a la confluencia de los ríos Nanay, Itaya con el Amazonas, a través del plan de vuelo cuyas características fueron de 80 m de altura de vuelo, un traslape de 60% entre foto y foto, procesada posteriormente con el software Agisoft versión educativa. Posteriormente, se realizaron mediciones de caudales y batimetría con el equipo ADCP para determinar el perfil de velocidad y profundidad del sector crítico. La velocidad promedio para el mes de setiembre 2024 fue de 0.257 m/s, con una profundidad máxima 2.43 m. el año ha sido considerado como la sequía más grande de las últimas décadas. Los resultados ayudaron a prevenir el riesgo de las embarcaciones que acodaban en los puertos internos de Iquitos.
The research has been named “Photogrammetric Drone for the detection of Hydrological risk during the low water period in the Confluence of the rivers Nanay, Itaya and Amazon, Iquitos Loreto 2024″ carried out in Punchana district of Maynas province, Loreto region. They were to use drone aerial photography to locate priority hydrological zones established during low water period in the Itaya and Amazon rivers, and then use MODIS-derived and remotely sensed data product time series of derived river stage to provide a risk of extreme low water in 2024 for river navigation. Following a flight plan at an altitude of 80 meters and 60% image overlap, the approach used drone flights in the quadrant including the confluence of the Nanay, Itaya, and Amazon Rivers. The educational version of Agisoft software was used to process the data. Furthermore,using an Acoustic Doppler Current Profiler (ADCP), flow and bathymetric measurements were collected to define velocity and depth profiles in the critical area. With a maximum measured depth of 2.43 meters, the mean flow velocity in September 2024 was 0.257 m/s. This year has been designated as seeing the worst drought in recent decades. The results help to lessen navigational hazards for ships mooring at the interior ports of Iquitos.
The research has been named “Photogrammetric Drone for the detection of Hydrological risk during the low water period in the Confluence of the rivers Nanay, Itaya and Amazon, Iquitos Loreto 2024″ carried out in Punchana district of Maynas province, Loreto region. They were to use drone aerial photography to locate priority hydrological zones established during low water period in the Itaya and Amazon rivers, and then use MODIS-derived and remotely sensed data product time series of derived river stage to provide a risk of extreme low water in 2024 for river navigation. Following a flight plan at an altitude of 80 meters and 60% image overlap, the approach used drone flights in the quadrant including the confluence of the Nanay, Itaya, and Amazon Rivers. The educational version of Agisoft software was used to process the data. Furthermore,using an Acoustic Doppler Current Profiler (ADCP), flow and bathymetric measurements were collected to define velocity and depth profiles in the critical area. With a maximum measured depth of 2.43 meters, the mean flow velocity in September 2024 was 0.257 m/s. This year has been designated as seeing the worst drought in recent decades. The results help to lessen navigational hazards for ships mooring at the interior ports of Iquitos.
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Fotogrametría, Riesgo Hidrológico, Estiaje, Photogrammetry, Hydrological Risk, Low Flow
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