Abstract

Abstract. By its very nature Earth is unsettled and in continual motion. Earthquakes and volcanoes are an expression of the convective motions of the planet, and our existence on Earth is a consequence of this tectonic activity. Yet, as humans, we often struggle to understand our role in relation to such unpredictable natural phenomena and use different methods to attempt to find order in nature's chaos. In dwelling on the surface of our “unsettled planet”, we adapt and live with a range of ground vibrations, both natural and anthropogenic in origin. Our project, funded by the University of Bristol's Brigstow Institute, seeks to explore how we perceive and understand the shaky ground we live on, using an interdisciplinary approach that brings together the Earth sciences, the history of art and literature, and performance art. Inspired by historical commentary in the aftermath of large earthquakes, which frequently notes the unscheduled ringing of church bells excited by the shaking around them, we reflect on how these purported unscheduled bell-ringing events were caused not only by near earthquakes but also by distant incidents. To investigate this phenomenon, we installed a state-of-the-art broadband seismometer in the Wills Memorial Building tower to record how Great George (the tower bell) responds to the restless world around him. The installed seismometer has been recording activity around and within the tower on a near-continuous basis between late-March 2018 and January 2019. Here, we present the signals recorded by the seismometer as Great George overlooks the hustle and bustle of the city around him and investigate how connected we are to our unsettled planet, even from our tectonically quiet setting in Bristol. We find that the seismometer not only shows the ebb and flow of activity in and around Bristol but also registers earthquakes from as nearby as Lincolnshire, UK, or as far away as Fiji, halfway around the world. In order to contextualize our findings, our project also considers what determines how people have responded to earth-shaking events, drawing on both historical and recent examples, and looks to contemporary art practice to consider how an awareness of our unsettled planet can be communicated in new ways. The project has led to a number of art installations and performances, and feedback from artists and audiences shows how making art can be used to both investigate our connections with the Earth and to articulate (and even accept) the uncertainties inherent in encountering unstable ground.

Highlights

  • People live with the ground shaking on a daily basis but when and why we become aware of this is contextual

  • We present the signals recorded by the seismometer as Great George overlooks the hustle and bustle of the city around him and investigate how connected we are to our unsettled planet, even from our tectonically quiet setting in Bristol

  • Badcoe et al.: Good vibrations: living with the motions of our unsettled planet tention grabbing, are the vibrations produced by phenomena such as earthquakes

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Summary

Introduction – the Unsettled Planet project

People live with the ground shaking on a daily basis but when and why we become aware of this is contextual. We found ourselves interested in how people react to first-hand experiences with the fact that the ground is not stable or firm At one extreme, this involved thinking about living in earthquakeprone regions, and at the other, it involved considering how someone from the countryside might find it unsettling to live in a city with heavy traffic vibrations. As we discovered, thinking about how people live with the ground shaking daily does not just apply to distant places, rich in seismic activity, poised on a fault line, but can be used to consider our own located positions, which, for the purposes of the project, took in the steep incline of Park Street and the Wills Memorial Building in Bristol: surely, the epitome of solid ground. What we each brought to the discussion was dependent on the parts of the Earth’s surface with which we are familiar; this was a frame of reference which came partly from professional activities and personal trajectories, anecdotes, questions, lines from a poem, an image and identities; all of these provided points of connection, but we found collective stimulus in a bell

Great George and the Wills Memorial Building
Thumbing through the Special Collections
Public colloquium
Data summary – monitoring the world from a bell tower
Signals from the bell-ringing
Variations in activity levels near the tower as a function of time
Regional and teleseismic earthquakes
Variations in signal amplitude due to local site effects
How does it compare
Church bells ring during earthquakes
What determines how people respond to ground shaking?
Closing thoughts
Full Text
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