LOS Displacements of Mauna Loa volcano, Hawaii Island, as determined using SBAS-InSAR

Karolina Grzesiak,Wojciech J Milczarek,Jan B Blachowski,J Górniak-Zimroz,D Kasza

doi:10.1051/e3sconf/20175500006

Abstract

This paper presents an overview of the surface displacements retrieval capability of the Differential Synthetic Aperture Radar Interferometry algorithm, using Small Baseline Subset (SBAS) technique, in the context of active volcanic areas. Based on Sentinel-1A images, time series displacements fields of the Mauna Loa volcano area over a 2-year time interval (between 2015 and 2017) were received using batch processing. Based on 35 radar images, a total of 179 interferograms have been calculated. Methodology of Synthetic Aperture Radar (SAR) Sentinel-1 ESA satellite mission data processing with small base (SBAS) interferometric techniques from has been presented. The displacements calculated in the satellite’s Line of Sight (LOS) have been presented graphically on maps and graphs. Application of radar interferometry methods in the case of volcanic surface activity research creates new possibilities in the area of permanent monitoring of this type of areas.

Highlights

The present shape and location of the continents is the result of tectonic plates movements over millions of years
In relation to the Mauna Loa volcano, the highest value of Line of Sight (LOS) displacements can be observed in the central part of the volcano – around the crater – about 3 cm
Thirtyfive InSAR images were used to map the displacements of the Mauna Loa volcano in 2015 – 2017

Summary

Introduction

The present shape and location of the continents is the result of tectonic plates movements over millions of years. Advanced measurement techniques enable us to obtain information about the elevation shape, observe a lot of phenomena and examine the physical properties of the Earth surface. Data for this type of research is acquired direct or indirect methods. Radar interferometry is used to obtain information about the topography of the study area, as well as an excellent tool for monitoring displacements of terrain. These changes are mainly due to natural phenomena such as earthquakes, volcanic activity, landslides and human activities

Methods

Results

Conclusion