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Journal Article

A strainmeter array as the fulcrum of novel observatory sites along the Alto Tiberina Near Fault Observatory

Authors

Chiaraluce,  Lauro
External Organizations;

Bennett,  Richard
External Organizations;

Mencin,  David
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Johnson,  Wade
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Barchi,  Massimiliano Rinaldo
External Organizations;

/persons/resource/bohnhoff

Bohnhoff,  M.
4.2 Geomechanics and Scientific Drilling, 4.0 Geosystems, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum;

Baccheschi,  Paola
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Caracausi,  Antonio
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Calamita,  Carlo
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Cavaliere,  Adriano
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Gualandi,  Adriano
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Mandler,  Eugenio
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Mariucci,  Maria Teresa
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Martelli,  Leonardo
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Marzorati,  Simone
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Montone,  Paola
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Pantaleo,  Debora
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Pucci,  Stefano
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Serpelloni,  Enrico
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Supino,  Mariano
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Stramondo,  Salvatore
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Hanagan,  Catherine
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Van Boskirk,  Liz
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Gottlieb,  Mike
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Mattioli,  Glen
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Urbani,  Marco
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Mirabella,  Francesco
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Akimbekova,  Assel
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/persons/resource/pierdo

Pierdominici,  S.
4.2 Geomechanics and Scientific Drilling, 4.0 Geosystems, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum;

/persons/resource/wiers

Wiersberg,  T.
4.2 Geomechanics and Scientific Drilling, 4.0 Geosystems, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum;

Marone,  Chris
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Palmieri,  Luca
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Schenato,  Luca
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Fulltext (public)

5026796.pdf
(Publisher version), 10MB

Supplementary Material (public)
There is no public supplementary material available
Citation

Chiaraluce, L., Bennett, R., Mencin, D., Johnson, W., Barchi, M. R., Bohnhoff, M., Baccheschi, P., Caracausi, A., Calamita, C., Cavaliere, A., Gualandi, A., Mandler, E., Mariucci, M. T., Martelli, L., Marzorati, S., Montone, P., Pantaleo, D., Pucci, S., Serpelloni, E., Supino, M., Stramondo, S., Hanagan, C., Van Boskirk, L., Gottlieb, M., Mattioli, G., Urbani, M., Mirabella, F., Akimbekova, A., Pierdominici, S., Wiersberg, T., Marone, C., Palmieri, L., Schenato, L. (2024): A strainmeter array as the fulcrum of novel observatory sites along the Alto Tiberina Near Fault Observatory. - Scientific drilling: reports on deep earth sampling and monitoring, 33, 2, 173-190.
https://doi.org/10.5194/sd-33-173-2024


Cite as: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5026796
Abstract
Fault slip is a complex natural phenomenon involving multiple spatiotemporal scales from seconds to days to weeks. To understand the physical and chemical processes responsible for the full fault slip spectrum, a multidisciplinary approach is highly recommended. The Near Fault Observatories (NFOs) aim at providing high-precision and spatiotemporally dense multidisciplinary near-fault data, enabling the generation of new original observations and innovative scientific products. The Alto Tiberina Near Fault Observatory is a permanent monitoring infrastructure established around the Alto Tiberina fault (ATF), a 60 km long low-angle normal fault (mean dip 20°), located along a sector of the Northern Apennines (central Italy) undergoing an extension at a rate of about 3 mm yr−1. The presence of repeating earthquakes on the ATF and a steep gradient in crustal velocities measured across the ATF by GNSS stations suggest large and deep (5–12 km) portions of the ATF undergoing aseismic creep. Both laboratory and theoretical studies indicate that any given patch of a fault can creep, nucleate slow earthquakes, and host large earthquakes, as also documented in nature for certain ruptures (e.g., Iquique in 2014, Tōhoku in 2011, and Parkfield in 2004). Nonetheless, how a fault patch switches from one mode of slip to another, as well as the interaction between creep, slow slip, and regular earthquakes, is still poorly documented by near-field observation. With the strainmeter array along the Alto Tiberina fault system (STAR) project, we build a series of six geophysical observatory sites consisting of 80–160 m deep vertical boreholes instrumented with strainmeters and seismometers as well as meteorological and GNSS antennas and additional seismometers at the surface. By covering the portions of the ATF that exhibits repeated earthquakes at shallow depth (above 4 km) with these new observatory sites, we aim to collect unique open-access data to answer fundamental questions about the relationship between creep, slow slip, dynamic earthquake rupture, and tectonic faulting.