Inundation maps

Floods are one of the most significant devastating natural hazards around the globe. Recent development in remote sensing technology supports faster and low-cost analysis of flood hazards. This study used the Sentinel-1 SAR data for flood mapping and damage assessment. We selected the October 2022 flood event in Thua Thien Hue province, Vietnam.

10p vithomson 02-07-2024 0 0   Download

Flood is a natural disaster that can cause loss of life and damage to property. The objective of this study is to create a flood map of Yen Bai city, where flood occurs regularly during heavy rain and Thao River's water level rises. The study used Mike Flood model based on the connection of 1D and 2D hydrodynamic models.

10p vimalfoy 08-02-2023 4 2   Download

In this paper, MODIS satellite images corrected land surface reflectance 8-day and at 500 m spatial resolution are used to produce the time-series of inundated maps in the Lower Mekong River

4p viwendy2711 05-10-2021 12 1   Download

The study investigated the impacts of climate change on sedge production at Nga Son district, using secondary and primary information with interviewed data. GIS technologies were used to identify and map areas at risk of inundation from sea level rise and analyze land uses most likely to be affected. Results show that: from 1970 to 2013...

9p trinhthamhodang1218 18-03-2021 20 1   Download

An Giang is one of the provinces in the Mekong delta that is greatly affected by flood events, which brings damage and devastation to life and property. This study practices the application of Sentinel-1A images to monitor the distribution of flood depths in the An Giang province in 2019 as well as applies regression correlation and thresholding to scattering value analysis. The research results indicated the exponential regression model on the VV polarization images had correlation coefficients (r) in August, September, and October ranging from 0.8398 to 0.

7p nguaconbaynhay10 29-01-2021 8 3   Download

Flooding caused by historically high flows, especially in Tra Khuc-Ve River basin in the Mid-Central region in Vietnam in November 2013, which caused widespread damage. The purpose of this paper was to establish the inundation maps in the downstream part of Tra Khuc-Ve rivers by using the coupling of the hydrological and hydraulic models (MIKE SHE/MIKE 11 and MIKE 11 GIS). Calibration and validation of the hydrological model were in good agreement in terms of the vibration amplitude, absolute value, and phases.

12p nguyentanloc09 17-10-2020 23 2   Download

With the rising sea level becoming a more pressing issue to coastal areas, a comprehensive analysis has been conducted to assess the vulnerability of the Çukurova Delta under the projected inundation by the end of the century. The level of inundation was estimated from a multimission satellite altimetry sea level anomaly and significant wave height data between September 1992 and February 2012.

10p vidonut2711 09-11-2019 13 1   Download

The purpose of this study is to establish tsunami-wave elevation at the shoreline versus the return period curves for different locations along the Alborán Sea coast. Furthermore, an inundation map of the city of Roquetas del Mar (Almeria) has been obtained. It is concluded that the tsunamis generated in the Alborán basin have a medium to low hazard, with the most important elevations in the Málaga, Adra and Melilla areas.

16p vinasaki2711 09-11-2019 5 0   Download

Microwave remote sensing or SAR (Synthetic Aperture Radar) data has been employed extensively to map open water bodies and to monitor flood extents, where cloud cover often prohibits the use of satellite sensors operating at other wavelengths. Where total inundation occurs, a low backscatter return is expected due to the specular reflection of SAR signal on the water surface. However, low local incidence angle and wind induced waves can cause a roughening of the water surface which result in a high return signal.

15p vinhsolax 15-09-2019 16 1   Download

This article presents a set of inundation maps corresponding to flood frequencies of 1%, 2%, 5%, 10%, 20% in the Gianh river basin. The results show that flooding happens more frequent in both river banks and downstream areas of Gianh river basin. As Gianh River runs mainly along Tuyen Hoa District, the communes along the river banks of the district are seriously affected by floods.

8p vithomasedison2711 20-08-2019 5 0   Download

This paper presents a methodology to determine inundation area in a flood event in Ha Tinh Province, Vietnam, by applying Synthetic Aperture Radar (SAR) image processing, in combination with Digital Elevation Model (DEM) for threshold detection. Sentinel-1 images were down loaded from an open source provided by European Space Agency (ESA). DEM data were collected from United States Geological Survey (USGS).

5p thihuynh3006 16-03-2018 28 0   Download

In recent years, under impacts of human activities and climate change, flood has been increased in both the frequency and magnitude, causing lots of damages to people. This study presents a method to evaluate the direct spatial damages of flooding based on inundation depth and land use data. Damage functions for different types of land use arc selected and applied. Matlab strings and GIS are combined to calculate damage in monitery term. The method is applied for estimating loss caused by thc flood event November 1999 for Huong rivce basin.

10p dem_thanh 22-12-2012 50 3   Download