Jakob Wilk
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View article: Seismic reflection and topography insights into Ries crater diameter and megablock zone
Seismic reflection and topography insights into Ries crater diameter and megablock zone Open
Most of the extensive crater‐wide geophysical studies at the Ries impact structure were made decades ago when the origin of the structure was still being debated. Although it is one of the most studied impact structures, its internal struc…
View article: Silts with a human touch: the shift from natural to anthropogenically controlled fluvial dynamics in the Kinzig River floodplains, southwestern Germany
Silts with a human touch: the shift from natural to anthropogenically controlled fluvial dynamics in the Kinzig River floodplains, southwestern Germany Open
Central European fluvial systems shifted from naturally to anthropogenically controlled during the middle to late Holocene, responding uniquely to non-synchronous and interdependent natural and anthropogenic forcings. Previous research mai…
View article: Shaped by the Double: Investigating Double-Layered Ejecta at Ries and Lonar Craters
Shaped by the Double: Investigating Double-Layered Ejecta at Ries and Lonar Craters Open
Double-layered ejecta (DLE) craters feature distinct ejecta layers, striated surfaces, moat and rampart structures, widely seen as evidence for an ejecta emplacement with fluidized components derived from subsurface volatiles such as water…
View article: Structure and age of ancient walls from the city of Nan, northern Thailand
Structure and age of ancient walls from the city of Nan, northern Thailand Open
View article: Layered by water: Impact excavation processes on terrestrial analogues for Mars. 
Layered by water: Impact excavation processes on terrestrial analogues for Mars.  Open
Comparative planetological studies show that the excavation of rock debris during impact processes and their distribution (ejecta) around impact craters are strongly influenced by rheology and volatile content of the affected crust [1]. Th…
View article: Reconstructing the Flood History of Nan Ancient City: Insights from Sedimentary Analysis
Reconstructing the Flood History of Nan Ancient City: Insights from Sedimentary Analysis Open
Monsoon-induced floods have played a pivotal role in shaping the fortunes of Asian civilizations and communities over the millennia, and their far-reaching consequences persist to this day. This study delves into the floodplain east of Nan…
View article: Understanding the Ries impact structure subsurface from high-resolution seismic data
Understanding the Ries impact structure subsurface from high-resolution seismic data Open
The Ries impact structure (southern Germany) formed ca. 15 Ma and is 22–26 km in diameter, making it one of the youngest and best-preserved mid-size terrestrial impact craters, yet the subsurface has not been studied with modern geophysics…
View article: Size–frequency distribution of shallow landslides in the Black Forest, Germany
Size–frequency distribution of shallow landslides in the Black Forest, Germany Open
Summary Landslides are a major hazard in mountainous regions, represent a threat to human life, and cause substantial economic costs. While some landslide hazard assessments, including hazards maps, are available for Germany, their spatial…
View article: Impact excavation processes studied by Ground-penetrating radar (GPR) on terrestrial analogues for Mars.
Impact excavation processes studied by Ground-penetrating radar (GPR) on terrestrial analogues for Mars. Open
Introduction: Recent studies have shown some terrestrial impact structures to possess ejecta ramparts similar to martian impact craters, e.g. Lonar crater in India [1], and Ries crater in Germany [2]. Nonetheless, the formation of ejecta r…
View article: Ground-penetrating radar (GPR) of the Ries crater's ejecta blanket at Aumühle
Ground-penetrating radar (GPR) of the Ries crater's ejecta blanket at Aumühle Open
Introduction:The Ries crater is a 26 km sized complex impact structure of Miocene origin (14.34+-0.08 Ma) [1, 2]. The impact event itself was caused by an oblique impact of a 1.5 km diameter stony meteorite exceeding an impact velocity of …
View article: The Erbisberg drilling 2011: Implications for the structure and postimpact evolution of the inner ring of the Ries impact crater
The Erbisberg drilling 2011: Implications for the structure and postimpact evolution of the inner ring of the Ries impact crater Open
The 26 km diameter Nördlinger Ries is a complex impact structure with a ring structure that resembles a peak ring. A first research drilling through this “inner crystalline ring” of the Ries was performed at the Erbisberg hill ( SW Ries) t…
View article: Petrographic investigation of shatter cone melt films recovered from MEMIN impact experiments in sandstone and iSALE modeling of their formation boundary conditions
Petrographic investigation of shatter cone melt films recovered from MEMIN impact experiments in sandstone and iSALE modeling of their formation boundary conditions Open
Shatter cones are diagnostic for the recognition of meteorite impact craters. They are unambiguously identifiable in the field and the only macroscopic shock deformation feature. However, the physical boundary conditions and exact formatio…
View article: Experimental impact cratering: A summary of the major results of the <scp>MEMIN</scp> research unit
Experimental impact cratering: A summary of the major results of the <span>MEMIN</span> research unit Open
This paper reviews major findings of the Multidisciplinary Experimental and Modeling Impact Crater Research Network ( MEMIN ). MEMIN is a consortium, funded from 2009 till 2017 by the German Research Foundation, and is aimed at investigati…
View article: Robust optical tracking of individual ejecta particles in hypervelocity impact experiments
Robust optical tracking of individual ejecta particles in hypervelocity impact experiments Open
New insights into the kinematics of ejecta clouds and the dynamics of crater formation are gained from the introduction of an approach to track individual particles ejected from a horizontal hypervelocity impact of a 2 mm aluminum sphere a…
View article: Formation of shatter cones by symmetric fracture bifurcation: Phenomenological modeling and validation
Formation of shatter cones by symmetric fracture bifurcation: Phenomenological modeling and validation Open
Several models of shatter cone formation require a heterogeneity at the cone apex of high impedance mismatch to the surrounding bulk rock. This heterogeneity is the source of spherically expanding waves that interact with the planar shock …
View article: Formation of shatter cones in MEMIN impact experiments
Formation of shatter cones in MEMIN impact experiments Open
Shatter cones are the only macroscopic feature considered as evidence for shock metamorphism. Their presence is diagnostic for the discovery and verification of impact structures. The occurrence of shatter cones is heterogeneous throughout…
View article: Dating a small impact crater: An age of Kaali crater (Estonia) based on charcoal emplaced within proximal ejecta
Dating a small impact crater: An age of Kaali crater (Estonia) based on charcoal emplaced within proximal ejecta Open
The estimates of the age of the Kaali impact structure (Saaremaa Island, Estonia) provided by different authors vary by as much as 6000 years, ranging from ~6400 to ~400 before current era ( BCE ). In this study, a new age is obtained base…