Morphological Relationship Between Floodplain Area, Wavelength and Amplitude of Quarried and Unquarried River

River, Quarry, Floodplain, Amplitude, Wavelength

Authors

  • Raymundo Vargas Romero Partido State University
  • Marijane A. Iglesia College of Engineering and Technology, Partido State University, Gia, Camarines Sur, Philippines
  • Alicia S. Pempena College of Engineering and Technology, Partido State University, Gia, Camarines Sur, Philippines
  • Alejandro Pitallano Jr. College of Engineering and Technology, Partido State University, Gia, Camarines Sur, Philippines
  • Geosan dela Cruz College of Engineering and Technology, Partido State University, Gia, Camarines Sur, Philippines
  • Robert Nueles . College of Engineering and Technology, Partido State University, Gia, Camarines Sur, Philippines
June 23, 2022
June 23, 2022

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This study investigated the relationship between floodplain area, wavelength and amplitude in quarry and unquarried portion of Lagonoy River. Mathematical modelling was applied to gather the data with ground check to see the real situation. Geospatial data were assessed using computer application that represent satellite image of the earth. Mathematical expressions were used to describe the parts of the rivers related to the impact of river morphology and alteration in quarry area done by expressing the relationship between the product of wavelengths (ƛ) and amplitudes (A) of river meanders to floodplain area (Fa). The impact of river alteration and morphology was found that the mean  value of ƛA is of great extent compared to the floodplain area on unquarried sections while it is opposite on quarried section. For  parts that are not appropriate for quarrying the ratio between the flood plain areas and the product of the wavelength and amplitude are ranging from 0.028 to 0.13 with the mean value of Fa = 0.028ƛA. However, for parts that are typical for quarrying  are ranging from 0.71 to 2.83 with the mean value of Fa = 2.13ƛA. Quantitative analysis of the data strenthened the results taken from physical investigation.