Sessions and field trips

26/09 – Field trip 1 : “Lambesc Earthquake” and Ice Breaker (Wine Tasting)

Field leaders: Georgia Poursoulis, Magali Rizza, Olivier Bellier, Laurent Bollinger, Yann Klinger

This one day field trip will include a visit of the urban area damaged by the 1909 M6 earthquake, a tour around the Trévaresse fault source (tectonic geomorphology) and will focus on trench(es) excavated to document the past surface-rupturing events.

27/09 – Scientific sessions

Session Earthquakes Geology and General Contributions

This session will include contributions from the various topics covered by the PATA conferences, including studies of modern events through various approaches, of prehistoric events through classical paleoseismological analyses.

Session Plate interiors and earthquakes

We dedicate a specific session to the Plate interiors areas, to stimulate contributions from France and European regions out of the plate boundaries. This session will cover a series of approaches (geology, geodesy, seismology, modelling etc) that participate to describe and understand this vast and heterogeneous domain.

28/09 – Scientific sessions

Session Archeoseimology and historical earthquakes

Historical seismicity and archeoseismicity are significant contributors to the characterization of seismicity and seismic hazards, especially within the Plate Interiors. We propose a session on these topics, with special emphasis on Europe cases.

Session Advances and Challenges in Dating

Understanding the deformation of the Earth’s crust relies on quantifying the rates at which surfaces processes occur. Thus, the application of geochronological techniques such as in-situ cosmogenic nuclides (3He, 10Be, 14C, 21Ne, 26Al, 36Cl, …), thermochronology, radiocarbon, luminescence, electron spin resonance (ESR), and tephrochronology is critical. We propose a session to share and discuss the benefits and challenges of dating, and their applications to earthquake geology and active tectonics. Studies combining dating techniques and crossing over timescales from the seismic cycle to the mountain building are especially welcome to our session.

29/09 – Scientific sessions

Session Advances in earthquake geology techniques (inland and offshore)

During the last decade(s), earthquake geology, including tectonic geomorphology, environmental effects’ survey after earthquakes, and stratigraphic paleoseismology took advantages of the development of remote sensing techniques (InSAR, optical correlation, LiDAR), as well as 3D excavation approach, sedimentological or soil sciences advancements, or prospection of offshore active faults. Because, these progresses is paramount to further steps in tectonics models and seismic hazard analyses, we convene a session to them.

Session Contributions to seismic hazard analysis

Societal impact of earthquakes is significant, either from their primary (shaking, surface faulting) and secondary effects (liquefaction, slope failure , tsunami). Several initiatives, including in the framework of INQUA/TERPRO (EDITH, SURE) or not (Fault2SHA), are trying to bridge the gap between the communities of earthquake geologists (and in general earth scientists) and hazard practitioners: the PATA Days are a first-order opportunity to join those groups.

30/09 – Field trip 2: “Le Teil Earthquake”

Field leaders: Jeff Ritz, Stéphane Baize, Laurence Audin, Matthieu Ferry, Christophe Larroque

Departure by bus

This one-day field trip will be dedicated to the environment of the 2019 M4.9 surface rupturing earthquake in Southern France (Le Teil, Ardèche). We will visit the fault that caused that rupture, and have a look at excavations where paleo-ruptures could be evidenced, on this previously unknown active fault.

End of conference.

Extra Field Trip “Internal Alps tectonics and gravitational controls”

01 to 03/10

Field leaders: Christian Sue, Hervé Jomard, Riccardo Vassallo, Christophe Larroque

We propose a 3-days field trip in the Southern Alps, one of the most seismically active zone of the belt, and the locus of recurrent seismic crisis, in the surroundings of the Ubaye valley. We will focus on the active Serenne-Bersezio fault system and its expression on the field, and will adress the relative role of tectonics vs. gravitational processes at different scales, combining active extension and strike-slip. The field trip will happen in rugged and high elevation terrain.