Satellite data

The study aimed to demonstrate how Sentinel-1 SAR data can be used to quickly and accurately map the extent of flooding and provide valuable information for decision making and response efforts with a case study of a flood event in October 2022 in Thua Thien Hue province, Vietnam.

10p vibecca 01-10-2024 7 2   Download

NCHMF and JICA team decided development of mobile services as an activity of the JICA Project. The mobile service system displays the data of Automatic Rain Gauge (ARG) stations, radars and meteorological satellites and the extreme weather warning messages disseminated from the system are aimed at users nationwide.

11p vibecca 01-10-2024 1 1   Download

We developed a prototype system of the very short-range forecast of precipitation in Vietnam by merging kinematic extrapolations of composite hourly rainfall analysis and NWP, verified its performance for the case of a heavy rainfall event in July 2021 over central Vietnam.

21p vibecca 01-10-2024 5 1   Download

This paper presents the results of analyzing land subsidence in Tra Vinh province in the period of 2015–2019 by using InSAR interference from Big Data of Sentinel–1 satellite radar and ground measurement data to understand the impact of urbanization and groundwater exploitation on land subsidence in the area research.

7p viyoko 01-10-2024 0 0   Download

This study aimed to apply the Variable Infiltration Capacity (VIC) hydrological model for simulating the daily river flow during the period of 2005-2014 for the Red River System, Vietnam.

7p viyoko 24-09-2024 3 1   Download

In this study, the capability of satellite-gauge merging precipitation using GSMaP-MVK and local dense rain gauge data with bias reduction approach to evaluate the AMP is investigated.

10p viyoko 24-09-2024 2 1   Download

Vietnam experiences increasing droughts throughout the dry season due to climate change, global warming, and human-caused activities like urbanization and deforestation. Drought hazard significantly impacts socioeconomic, agriculture, and the environment; it directly threatens human lives, livelihoods, food security, and environmental degradation.

13p vifaye 20-09-2024 4 1   Download

This study aims at exploiting and processing multi-temporal satellite images of the Google Earth Engine platform (GEE), combined with topographic data since 1965 to monitor changes in estuary and shoreline of the coastal area of Cua Dai, Tra Khuc river, Quang Nam province during a period of 1965–2021. The analysis results show shoreline changes and hot spots of erosion and landslides along the coast, on both sides of Cua Dai river.

14p dianmotminh02 03-05-2024 5 2   Download

In this study, we mapped and evaluated LULC changes in Huong Hoa district, Quang Tri province, over a period of 10 years based on Landsat 8 satellite image data processed on ArcGIS software. On that basis, we carried out the simulation of the LULC change for 2033 using the QGIS MOLUSCE plugin.

13p viritesh 02-04-2024 11 2   Download

Herein, a combined analysis of Global Navigation Satellite System-derived strain rate maps, in accordance with recent seismicity, was presented to reveal that the N-S extension is accommodated primarily by strike-slip faulting of the İzmir-Balıkesir Transfer Zone (İBTZ), where a counter clockwise rotation (~25–100°/Myr) along the vertical axis is dominant. The results indicated that strike-slip segments within the İBTZ show variable transport sense and amount of slip along them, and they connect by hard linkage relay ramps with the dip to oblique slip normal faults.

18p tanmocphong 29-01-2022 19 1   Download

We have studied the spatiotemporal evolution of surface deformation in Konya city and its vicinity using advanced multitemporal synthetic aperture radar techniques with SAR data acquired by Envisat, ALOS-1, and Sentinel-1 A/B satellites between 2004 and 2020. Velocity maps and time series show that the city has been subsiding with varying rates in space and time since 2004. The pattern of deformation shows two main lobes of subsidence centered in the western and eastern sides of the city with a nondeforming north-south trending narrow zone in between.

17p tanmocphong 29-01-2022 9 1   Download

A major earthquake (Mw=7.0) occurred in the Samos Island on the 30th of October 2020 at 11:51 UTC. Swarm satellite magnetic data were analysed for 153 days before and 46 days after the earthquake. Preearthquake and postearthquake anomaly search is constrained within the Dobrovolsky’s Circular Area. Fundamentally, there are 5 steps for processing satellite magnetic data to interpret the earthquake preparation phase. The first step is converting geographical coordinates to geomagnetic latitude and longitude.

10p tanmocphong 29-01-2022 13 0   Download

The morphotectonic features of the TGFZ and the distribution of the epicenters of earthquakes over magnitude 5.0 show that this fault zone remains active today. In this study, the deformation of the TGFZ is determined with high sensitivity using geodetic measurements. To obtain accurate information about the deformation of the TGFZ, 24 GNSS sites and two continuously operating reference stations were constructed in the southern part of the TGFZ. Between 2018 and 2020, Global Navigation Satellite Systems (GNSS) measurements were made on this network.

14p tanmocphong 29-01-2022 22 1   Download

This paper presents the comprehensive dataset of satellite data, shoreline detection methodology, and shoreline changes in the coast of Haiphong province from 1987 to 2018. Landsat satellite images from 1987 to 2018 were gathered.

10p meyerowitz 25-12-2021 11 0   Download

Monitoring and evaluation of saline water intrusion is an important task, especially for agricultural production in Ben Tre province. The paper introduces a new solution in the application of Landsat 8 satellite imagery and field survey data to determine the soil electrical conductivity (EC) for soil salinity assessment through the distribution of EC indice value.

11p larachdumlanat129 19-01-2021 32 2   Download

This paper presents the method of combining of Sentinel 2 MSI and Landsat 8 multi-resolution satellite image data for urban bare land classification based on NDBaI index. Two images of Sentinel 2 and Landsat 8 acquired closely together, were used to calculate the NDBaI index, in which sortware infrared band (band 11) of Sentinel 2 MSI image and thermal infrared band (band 10) of Landsat 8 image were used to improve the spatial resolution of NDBaI index.

11p larachdumlanat129 14-01-2021 63 3   Download

This thesis is organized into five chapters. In chapter 1, I give an introduction to remotely-sensed data and its application in various domains. A problem statement is also presented. Theoretical backgrounds in remote sensing, compositing methods and land cover classification methods are introdu ced.

39p tamynhan0 04-07-2020 13 5   Download

River water flow modeling often uses measured bottom elevation data for 2D-mesh interpolation. The interpolation quality affects water flow simulation outcome. Thus, methods of q properly are needed.

9p slimzslimz 08-12-2019 22 3   Download

Research objectives: Collect and process the magnetic data from CHAMP satellite and from the magnetic observatories within 6 years (from 2002-2007); study the method to separate magnetic field caused by EEJ from the observed data; identify some parameters of EEJ in all over meridians and study the variation of EEJ in space and time. The variation of EEJ in longitude, latitude and local time.

26p change03 06-05-2016 44 2   Download

The AMS(R)S provides voice and data connectivity to users such as air traffic controllers, pilots and aircraft operators The AMSS comprises satellites, aeronautical earth stations (AESs), ground earth stations (GESs) and associated ground facilities such as a network coordination center. 7 Existing satellite systems in operation for aeronautical communications Inmatsat, MTSAT Iridium

30p hanampro91 10-05-2013 73 8   Download