R. Malservisi

University of South Florida

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Timothy H. Dixon

University of Queensland

Kevin P. Furlong

Pennsylvania State University

Marino Protti

Universidad Nacional

Christina Plattner

Innsbruck Medical University

T. H. Dixon

Louisiana Tech University

Charles B. Connor

University of South Florida

L. Connor

University of South Florida

Mel Rodgers

University of South Florida

Yan Jiang

Shanghai Micro Satellite Engineering Center

M. Hackl

Ludwig-Maximilians-Universität München

Cooperative Institutions

University of South Florida

University of South Florida St. Petersburg

United States Geological Survey

University of Miami

Pennsylvania State University

California Institute of Technology

College of Marin

Ludwig-Maximilians-Universität München

Istituto Nazionale di Geofisica e Vulcanologia

The University of Texas at Austin

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Earthquake cycle on a transform fault in the Gulf of California, Mexico.

EGUGA (2010)

R. Malservisi M. Hackl Christina Plattner Francisco Suárez Vidal Javier Gonzales Garcia

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Microplate transfer by lithospheric coupling forces at the plate boundary

EGUGA (2009)

Christina Plattner R. Malservisi Rob Govers Giampiero Iaffaldano Ludwig-Maximilians-Universitaet Muenchen

12 Ma ago and since then translated with the Pacific (PAC) plate. The microplates’ transport mechanism has been explained by partial coupling with the PAC plate. According to this theory, the young oceanic lithosphere from the Farallon-Pacific spreading center approaching North America was too buoyant to be subducted. Therefore a zone of increased lithospheric coupling developed between the partially subducted Farallon slabs and the overlying NAM margin. In consequence both, the subduction and the seafloor spreading slowed down and ceased. With the development of this coupling region west of BAJA the main PAC-NAM plate boundary jumped inland east of BAJA, first delocalized in the Protogulf extensional province, and later localized along the Gulf of California. We use a numerical modeling technique to test the dynamic conditions of BAJA transport as seen from present-day and from geologic plate motion studies. Using the kinematic data we test the necessary coupling forces for BAJA transport, as well as, geometrical constraints along the PAC-BAJA coupling zone. Evaluating the transport conditions at different stages of the plate boundary evolution, we want to learn about necessary pre-conditions for the BAJA transfer.

Seafloor Spreading

Pacific Plate

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Nuisance Flooding and Relative Sea-Level Rise: the Importance of Present-Day Land Motion

Scientific Reports (2017)

Makan A. Karegar Timothy H. Dixon R. Malservisi Jürgen Kusche Simon E. Engelhart

Abstract Sea-level rise is beginning to cause increased inundation of many low-lying coastal areas. While most of Earth’s coastal areas are at risk, areas that will be affected first are characterized by several additional factors. These include regional oceanographic and meteorological effects and/or land subsidence that cause relative sea level to rise faster than the global average. For catastrophic coastal flooding, when wind-driven storm surge inundates large areas, the relative contribution of sea-level rise to the frequency of these events is difficult to evaluate. For small scale “nuisance flooding,” often associated with high tides, recent increases in frequency are more clearly linked to sea-level rise and global warming. While both types of flooding are likely to increase in the future, only nuisance flooding is an early indicator of areas that will eventually experience increased catastrophic flooding and land loss. Here we assess the frequency and location of nuisance flooding along the eastern seaboard of North America. We show that vertical land motion induced by recent anthropogenic activity and glacial isostatic adjustment are contributing factors for increased nuisance flooding. Our results have implications for flood susceptibility, forecasting and mitigation, including management of groundwater extraction from coastal aquifers.

Nuisance

10.1038/s41598-017-11544-y

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Geodetic Applications to Geomorphology

Elsevier eBooks (2021)

Mel Rodgers F. Deng Timothy H. Dixon Craig Glennie M. R. James

Earth observation

10.1016/b978-0-12-818234-5.00084-5

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Creeping Faults and Seismicity: Lessons From The Hayward Fault, California

EGSGA (2002)

R. Malservisi Kevin P. Furlong C. Gans

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Development of the Eastern California Shear Zone — Walker Lane belt: The effects of microplate motion and pre-existing weakness in the Basin and Range

Tectonophysics (2009)

Christina Plattner R. Malservisi Kevin P. Furlong Rob Govers

10.1016/j.tecto.2009.11.021

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Citations (20)

Numerical modeling of strike-slip creeping faults and implications for the Hayward fault, California

Tectonophysics (2002)

R. Malservisi Carl Gans Kevin P. Furlong

Elastic-rebound theory

10.1016/s0040-1951(02)00587-5

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Citations (38)

Thermal-rheological controls on deformation within oceanic transforms

Geological Society London Special Publications (2001)

Kevin P. Furlong Steven D. Sheaffer R. Malservisi

Abstract Transform faults that offset mid-ocean ridge (MOR) segments accommodate plate motion through deformations that involve complex thermal and mechanical feedbacks involving both brittle and temperature-dependent ductile rheologies. Through the implementation of a 3D coupled thermal-mechanical modelling approach, we have developed a more detailed picture of the geometry of plate boundary deformation and its dependence on plate velocity and the age offset of MOR transforms. The modelling results show that cooling of near-ridge lithosphere (lateral heat transfer) has significant effects in the ductile mantle lithosphere for both the location and style of deformation. The region where strain is accommodated in the subjacent mantle lithosphere is systematically offset from the position of the overlying linear transform fault in the brittle crust. This offset causes the boundary to be oblique to plate motions along much of the transform’s length, producing extension in regions of significant obliquity modifying the location of the surface fault segments. An implication of this complex plate-boundary geometry is that in the near-ridge region, the older (cooler) lithosphere will extend beneath the ridge tip, restricting the upwelling of mantle to the MOR. The melt to generate the oceanic crust adjacent to the transform must migrate laterally from its offset source, resulting in a reduced volume and thinner crust. This near-ridge plate boundary structure also matches the pattern of core-complex extension observed at inside corners of many slow-spreading ridges. The oblique extensional structure may also explain magmatism that is observed along ‘leaky’ transforms, which could ultimately result in the generation of new ridge segments that effectively ‘split’ large transforms.

10.1144/gsl.sp.2001.186.01.05

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Citations (18)

A new method to assess long term small sea-bottom vertical displacement in shallow water from bottom pressure sensor: the case of Campi Flegrei, Southern Italy

AGUFM (2016)

R. Malservisi F. Chierici G. Iannaccone Sergio Guardato L. Pignagnoli

Ocean bottom

Vertical displacement

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Relative Motion of Africa Plate with Respect to South African Kalahari Craton