Tidal, wave, current and sediment flow patterns in wet season in the estuary of Porong River Sidoarjo, Indonesia

A Kisnarti Engki,Dj Prasita Viv,Suntoyo Suntoyo,Agro Wisudawan

doi:10.1051/matecconf/201817701016

Abstract

The objectives of this research are to analyze characteristics of physical oceanography, such as : tides, waves, currents, and discharges at Muara Kali Porong. This research also discuss sediment flow patterns and morphology in around the Estuary of Porong River. Tidal data were used as correction to the depth. The calculation to determine the tidal current velocity and wind data along with current data are used for simulation model. Sedimentation process with a simulation of 15 days in the West Season occured in the Northeast of Lusi Island with sediment thickness ranged from 1.6 to 2.6 m.

Highlights

The bursts of mud and hot mudflow in Porong, Sidoarjo that have occurred since May 29, 2006 until today still continues, and there are no signs that this natural phenomenon will stop in the near future
From the results of data processing for the oceanographic parameters, it can be concluded that the influence of the change of estuary Porong most dominant in the wet season is caused by non tidal currents
There are many river estuaries that have relatively high river flow (500 m3/s) plus since 2006 the abundance of sediment comes from Lapindo mudflow ehich is flowed into the Strait of Madura through Porong river

Summary

Introduction

The bursts of mud and hot mudflow in Porong, Sidoarjo that have occurred since May 29, 2006 until today still continues, and there are no signs that this natural phenomenon will stop in the near future. The amount of mud volumes emerging from the center of the eruption is enormous, in 2006-2007 estimated at 100,000 m3/day and even reaching 180,000 m3/day in December 2006, and tend to decrease to about 75,000 m3/day in July 2009. With the rapid assessment of the government, it is determined that the mud should be discharged into the sea through the Porong River. This is in accordance with Presidential Regulation 14/2007 and its changes, the mud flow of Sidoarjo must be channeled into the sea through Porong River. This is in accordance with Presidential Regulation 14/2007 and its changes, the mud flow of Sidoarjo must be channeled into the sea through Porong River. [1]

Objectives

Methods

Findings

Discussion

Conclusion