Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Non-destructive Tests for Concrete Strength01:12

Non-destructive Tests for Concrete Strength

The rebound hammer test, also known as the Schmidt hammer test, is a non-destructive technique for evaluating the hardness of concrete and, indirectly, the strength of concrete. It operates on the principle that the rebound of a spring-driven mass from a concrete surface correlates to the surface's hardness. The device comprises a mass within a tubular housing, a spring mechanism, and a plunger that strikes the concrete. Upon release, the energy imparted to the mass by the spring causes it to...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Preparatory phase of large earthquakes illuminated by unsupervised categorization of earthquake catalog features.

Nature communications·2026
Same author

Impact of zervimesine on the neuroinflammatory biomarker GFAP and related proteomic molecular correlates in plasma of participants from a phase 2 clinical trial in Alzheimer's disease.

Alzheimer's research & therapy·2026
Same author

Understanding the Financial Implications of Antimicrobial Resistance Surveillance in Nepal: Context-Specific Evidence for Policy and Sustainable Financing Strategies.

Antibiotics (Basel, Switzerland)·2026
Same author

Drug Development.

Alzheimer's & dementia : the journal of the Alzheimer's Association·2025
Same author

A prodrug targeting CIM6P/IGF2R enhances memory in healthy mice and reverses deficits in an Angelman syndrome mouse model.

Translational psychiatry·2025
Same author

Why does the m6A writer complex require so many proteins?

PLoS biology·2025

Related Experiment Video

Updated: Jun 25, 2026

Blast Quantification Using Hopkinson Pressure Bars
09:41

Blast Quantification Using Hopkinson Pressure Bars

Published on: July 5, 2016

9.0K

A laboratory perspective on accelerating preparatory processes before earthquakes and implications for foreshock

Thomas H W Goebel1, Valerian Schuster2, Grzegorz Kwiatek2

  • 1University of Memphis, Center for Earthquake Research and Information, Memphis, TN, USA. thgoebel@memphis.edu.

Nature Communications
|July 3, 2024
PubMed
Summary

Foreshock activity duration is shortened by high fluid pressures and low fault heterogeneity. This leads to faster slip acceleration and fewer, more earthquake-like acoustic emissions, especially on immature faults.

More Related Videos

Kinematic History of a Salient-recess Junction Explored through a Combined Approach of Field Data and Analog Sandbox Modeling
06:55

Kinematic History of a Salient-recess Junction Explored through a Combined Approach of Field Data and Analog Sandbox Modeling

Published on: August 5, 2016

8.2K
The Role of Fabric in Frictional Properties of Phyllosilicate-Rich Tectonic Faults
07:39

The Role of Fabric in Frictional Properties of Phyllosilicate-Rich Tectonic Faults

Published on: November 6, 2021

3.1K

Related Experiment Videos

Last Updated: Jun 25, 2026

Blast Quantification Using Hopkinson Pressure Bars
09:41

Blast Quantification Using Hopkinson Pressure Bars

Published on: July 5, 2016

9.0K
Kinematic History of a Salient-recess Junction Explored through a Combined Approach of Field Data and Analog Sandbox Modeling
06:55

Kinematic History of a Salient-recess Junction Explored through a Combined Approach of Field Data and Analog Sandbox Modeling

Published on: August 5, 2016

8.2K
The Role of Fabric in Frictional Properties of Phyllosilicate-Rich Tectonic Faults
07:39

The Role of Fabric in Frictional Properties of Phyllosilicate-Rich Tectonic Faults

Published on: November 6, 2021

3.1K

Area of Science:

  • Geophysics
  • Earthquake Science
  • Seismology

Background:

  • Dynamic failure in laboratory settings is often preceded by foreshocks accompanying premonitory aseismic slip.
  • Aseismic slip is hypothesized to govern earthquake nucleation in nature, yet natural foreshocks are infrequent.

Purpose of the Study:

  • To investigate the influence of fault heterogeneity (roughness, damage, pore pressure) on premonitory slip and acoustic emission characteristics.
  • To understand why foreshocks are rare in natural earthquakes despite the role of aseismic slip.

Main Methods:

  • Laboratory experiments simulating fault behavior under varying conditions of roughness, damage, and pore pressure.
  • Analysis of premonitory slip acceleration and acoustic emission (AE) patterns.
  • Characterization of AE focal mechanisms.

Main Results:

  • High fluid pressures increase fault stiffness and reduce heterogeneity, promoting rapid slip acceleration and shorter precursory periods.
  • Low geometric heterogeneity (smooth faults) similarly accelerates slip and shortens precursory periods.
  • Acoustic emission activity in low-heterogeneity samples shows an increasing dominance of earthquake-like double-couple focal mechanisms.

Conclusions:

  • Increased stress and geometric homogeneity, akin to high fluid pressure and reduced roughness, can significantly shorten foreshock duration.
  • Gradual fault activation and extended foreshock activity are more probable on immature faults at shallow depths.