at shallow depth
beneath the summit caldera. Additionally, within the caldera of the
Katla volcano, an Ml 1.7 earthquake occurred at 15:28 GMT at ~6 km
depth.
GPS deformation: Gradual horizontal displacement toward the centre of Eyjafjallajökull,
together with
vertical subsidence.
Magma flow: No measurements today; however, the intensity of the eruption
suggests that the discharge level
/media/jar/Eyjafjallajokull_status_2010-04-28_IES_IMO.pdf