Abstract
Abstract. Observation of sea ice thickness by remote sensing is one of key issues to understand an effect of global warming. However, ground truth must be necessary to discuss this kind of approach. Although there are several methods to acquire ice thickness, Ground Penetrating Radar (GPR) can be good solution because it can discriminate snow-ice and ice-sea water interface thanks to comparative higher spatial resolution than the other methods. In this paper, we carried out GPR measurement in brackish lake and an electromagnetic field analysis in order to interpret the GPR data. The simulation model was assumed considering the actual snow and ice thickness acquired in field measurement. From the simulation results, although it seems difficult to identify the reflection at snow and ice interface due to a thin layer thickness and a low dielectric constant, snow and ice thickness may be estimated by using multiple reflection components.
Highlights
Sea ice thickness is one of important parameters to understand an effect of global warming
On Feb. 2018, we carried out ground penetrating radar (GPR) measurement in Lake Saroma, which is a brackish lake, for relatively large area (200m by 300m, approximately) aiming to obtain grand truth for remote sensing data (Matsumoto et al, 2018)
A case of dry snow was assumed in this simulation. This case may be more difficult because travel time of snow layer is shorter due to lower dielectric constant resulting in a difficulty to discriminate the reflection from snow-ice interface and direct antenna coupling
Summary
Sea ice thickness is one of important parameters to understand an effect of global warming. There are several methods to obtain the ground truth of ice and snow thickness. There are other methods in order to cover larger area such as electromagnetic induction, sonar and so on, ground penetrating radar (GPR) can be good solution because it can discriminate snow-ice and ice-sea water interface thanks to comparative higher spatial resolution than the other methods (Liu et al, 2014a). On Feb. 2018, we carried out GPR measurement in Lake Saroma, which is a brackish lake, for relatively large area (200m by 300m, approximately) aiming to obtain grand truth for remote sensing data (Matsumoto et al, 2018). We carried out an electromagnetic filed analysis in order to interpret Bscan image acquired in field measurement.
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
