IS-Noise – 2018-2021

The IS-NOISE project aims at capturing seismic velocity changes through time by utilizing continuous ambient seismic noise and applying correlation and interferometric techniques. Different settings in Iceland will be investigated including a geothermal field, five different volcanic centres and the South seismic zone. The main goal is to retrieve changes possibly associated with industrial operation (fluid injection, in particular), volcanic unrest, and the onset of seismic activity.

IS-NOISE is funded by the Icelandic Research Fund.

IS-TREMOR – 2021-2024

The IS-TREMOR project aims to gain a holistic overview of seismic tremor recorded since 2015 in Iceland, which offers a unique opportunity of multiple sources of tremor, e.g. volcanic, glacial, and geothermal tremor distributed in the same area. By novel strategies for automated tremor detection, location and source-based classification, we wish to create an unprecedented registry of tremor events in Iceland. Seismic tremor, a semi-continuous wave-train which lacks clear arrivals associated with individual earthquakes, is frequently recorded and sometimes identified by the operational monitoring, yet, due its complexity (emergent waveform, irregularity and variable duration) traditional onset-picking location approaches fail in locating it and its mechanism remains overall enigmatic. This causes several problems, hindering both research and the monitoring, which we aim to solve, the main being: A lack of overview, both spatial and temporal of tremor signals registered in Iceland; investigations of tremors in Iceland are few, limited and not comprehensive; the lack of routine real-time tremor detection and location causes incertitude for the natural hazard monitoring and the civil protection since many tremor events may indicate an imminent hazard. Thus, we anticipate that the proposed study is high impact, is timely and promising to address some of the outstanding questions about the complex nature of tremor.

IS-TREMOR is funded by the Icelandic Research Fund.