BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Memento EPFL//
BEGIN:VEVENT
SUMMARY:What smart pebbles can and cannot do:  A discussion on the common 
 notions regarding IMU sensors and the prospect of using them in (fluvial) 
 geomorphological research.
DTSTART:20170503T111500
DTEND:20170503T123000
DTSTAMP:20260502T223249Z
UID:55b4c315f1fa81b42c3f7b10d767a2f4188b4fa22a598527ba5b4c02
CATEGORIES:Conferences - Seminars
DESCRIPTION:Georgios Maniatis   \nDuring the last decade\, many scientis
 ts developed and deployed ‘’smart- pebbles’’ in fluvial (and other
  rapidly changing environments) in an attempt to monitor sediment dynamics
 . In parallel\, Inertial Measurements Units (IMUs) have been tested in lab
 oratory experiments focusing mainly on fluvial single grain entrainments a
 nd sort-term motions (simulating either costal or river hydrodynamics). De
 spite the innovation in the above applications\, only a small number of th
 ose investigated the errors inherited in the IMU measurements. Although al
 l the IMUs are in principal the same (an assembly of micro-accelerometer\,
  micro-gyroscope and micro-compass)\, the parameters that affect the resul
 ts range from the sensor’s electrical and physical characteristics to th
 e filtering of the derived measurements and from the modelling of inertial
  kinematics to the transformation of those to a coherent reference frame. 
 In this presentation we will discuss: a) the key error sources in IMU sens
 ing and its realistic range of applicability\, b) the results from includi
 ng a coherent error compensation in the developing of a smart pebble for s
 ensing dynamics in natural streams\, c) results from testing this sensor i
 n a series of laboratory entrainment experiments and d) how these measurem
 ents alter the existing theoretical descriptions for fluvial sediment tran
 sport. Finally\, we will discuss preliminary results from the deployment o
 f two smart pebbles (one spherical and one elliptical) in a Scottish bedro
 ck river (River Calder).\n\nDr Maniatis has a 5- year Diploma in Environme
 ntal Engineering\, an M.Sc. in Freshwater Systems Science and a PhD in Geo
 graphy and Computing Science. However\, he believes that he is a geomorpho
 logist. During his PhD he developed a smart pebble for monitoring fluvial 
 sediment transport. His main concern was the understanding of the relevant
  errors and the contextualising of this new measurement in the theory of s
 ediment transport.  Currently\, he is employed as a Fluvial Geomorphology
  RA in the School of Geographical and Earth Sciences of the University of 
 Glasgow working for a national scale erosion susceptibility study dedicate
 d to the protection of critical water infrastructure.
LOCATION:GC C2 413 https://plan.epfl.ch/theme/generalite_thm_v2?request_lo
 cale=en&room=gc%20c2%20413&domain=places&dim_floor=2&lang=en&dim_lang=en&b
 aselayer_ref=grp_backgrounds&tree_groups=centres_nevralgiques%2Cacces%2
STATUS:CONFIRMED
END:VEVENT
END:VCALENDAR