Lionel Benoit

RESEARCH STATEMENT

I am interested in monitoring and modelling the space-time evolution of different Earth surface processes at high resolution. I mostly focus on local environments (few square kilometers) and on short time scales (minutes to days). In this context, a primary topic is the joint development of in-situ instruments, field acquisition procedures and data processing methods to capture as precisely as possible the natural process of interest. A secondary topic is the use of remote sensing data to complement or validate these in-situ observations.

I apply the developped frameworks to different natural objects such as rain fields, landslides or glaciers.

CURRENT RESEARCH

At the University of Lausanne, I am working more specifically on stochastic rainfall modelling. My main goal is therefore to develop a stochastic model able to reproduce the space-time behavior of rainfall as observed at very high resolution (100m in space, 1min in time). In parallel I am interested in the influence of the regional climate on the observed space-time structure of local rain fields.

BIOGRAPHY

Since 2015: Stochastic rainfall modelling, University of Lausanne (UNIL), Switzerland, PhD project.
2012-2014: Software development for low-cost GPS positioning, French mapping agency (IGN) and Ecole Normale Superieure (ENS), France.
2011: Adjustment of the French gravimetric network, IGN, France, MSc project.
2009 – 2011: MSc in geodesy and photogrammetry, Ecole Nationale des Sciences Geographiques (ENSG), France.

PUBLICATIONS

Benoit L, Gourdon A, Vallat R, Irarrazaval I, Gravey M, Lehmann B, Prasicek G, Graff D, Herman F, Mariethoz G (2019), A high-resolution image time series of the Gorner Glacier – Swiss Alps – derived from repeated UAV surveys, Earth System Science data, 11, 579-588
Benoit L, Vrac M, Mariethoz G (2018), Dealing with non-stationarity in sub-daily stochastic rainfall models, Hydrology and Earth System Sciences, 22, 5919–5933
Benoit L, Allard D, Mariethoz G (2018), Stochastic Rainfall Modeling at Sub-kilometer Scale, Water Resources Research, 54, 4108-4130
Benoit L, Mariethoz G (2017), Generating synthetic rainfall with geostatistical simulations, Wiley Interdisciplinary Reviews: Water, doi: 10.1002/wat2.1199
Lombardi D, Benoit L, Camelbeeck T, Martin O, Meynard C, Thom C (2016), Bimodal pattern of seismicity detected at the ocean margin of an Antarctic ice shelf, Geophysical Journal International 206(2), 1375–1381
Benoit L, Dehecq A, Pham H-T, Vernier F, Trouve E, Moreau L, Martin O, Thom C, Pierrot-Deseilligny M, Briole P (2015), Multi-method monitoring of Glacier d’Argentiere dynamics, Annals of Glaciology 56, 118-128
Benoit L, Briole P, Martin O, Thom C, Malet JP, Ulrich P (2015), Monitoring landslide displacements with the Geocube wireless network of low-cost GPS, Engineering Geology 195, 111-121
Benoit L, Briole P, Martin 0, Thom C (2014), Real-time deformation monitoring by a wireless network of low-cost GPS, Journal of Applied Geodesy, 119–128