scholarly journals Modeling slow-slip segmentation in Cascadia subduction zone constrained by tremor locations and gravity anomalies

2017 ◽  
Vol 122 (4) ◽  
pp. 3138-3157 ◽  
Author(s):  
Duo Li ◽  
Yajing Liu
Keyword(s):  
Subduction Zone ◽  
Gravity Anomalies ◽  
Cascadia Subduction Zone ◽  
Slow Slip

Optimizing Sensor Configurations for the Detection of Slow‐Slip Earthquakes in Seafloor Pressure Records, Using the Cascadia Subduction Zone as a Case Study

2019 ◽  
Vol 124 (12) ◽  
pp. 13504-13531 ◽  
Author(s):  
Erik K. Fredrickson ◽  
William S. D. Wilcock ◽  
David A. Schmidt ◽  
Parker MacCready ◽  
Emily Roland ◽  
...  
Keyword(s):  
Subduction Zone ◽  
Cascadia Subduction Zone ◽  
Slow Slip ◽  
Seafloor Pressure

scholarly journals GPS constraints on 34 slow slip events within the Cascadia subduction zone, 1997–2005

2008 ◽  
Vol 113 (B4) ◽  
Author(s):  
W. Szeliga ◽  
T. Melbourne ◽  
M. Santillan ◽  
M. Miller
Keyword(s):  
Subduction Zone ◽  
Cascadia Subduction Zone ◽  
Slow Slip ◽  
Slow Slip Events

scholarly journals Applying Automatic Mapping Processing By GMT to Bathymetric and Geophysical Data: Cascadia Subduction Zone, Pacific Ocean

2020 ◽  
Vol 13 (3-4) ◽  
pp. 15-26
Author(s):  
Polina Lemenkova
Keyword(s):  
Pacific Ocean ◽  
Subduction Zone ◽  
Gravity Anomalies ◽  
Cascadia Subduction Zone ◽  
Plate Boundaries ◽  
Sediment Layer ◽  
Juan De Fuca Plate ◽  
North East ◽  
The North ◽  
Free Air Gravity

Abstract The Cascadia Trench is stretching along the convergent plate boundaries of Pacific Plate, North America Plate and Juan De Fuca Plate. It is an important geomorphological structural feature in the north-east Pacific Ocean. The aim of the paper is to analyse the geomorphology of the Cascadia Trench west of Vancouver Island (Canada and USA) using the GMT cartographic scripting toolset. The unique geomorphological feature of the Cascadia Trench is that the thick sediment layer completely obscures the subduction zone and abyssal hills. This results in the asymmetric profile in the cross-section of the trench. Bathymetric data were extracted from the GEBCO 2019 dataset (15 arc-second grid), sediment thickness by the GlobSed dataset. Due to the dominance of high sedimentary rate and complexity of the tectonic processes and geologic settings, Cascadia Trench develops very specific asymmetric geomorphic shape comparing to the typical V-form. The results of the geomorphic modelling show that eastern side of the trench has a gentle curvature (slope: 35.12°), partially stepped, due to the tectonic movements and faults. The opposite, oceanward side is almost completely leveled. The trench is narrow with maximal depth at the selected segment -3489 m and for the whole dataset -6201 m. The most repetitive depth is in a range -2500 to -2400 m (267 samples) and -2500 to -2600 m (261 samples). The bottom is mostly flat due to the high sedimentation rates indicating the accumulative leveling processes. Marine free-air gravity anomalies along the Cascadia Subduction Zone are characterized by weakly positive values (20 mGal) increasing rapidly in the zone of the continental slope (>200 mGal), which is associated with a decrease in thickness of the Earth’s crust.

AN INCOMPLETE HISTORY OF LATE HOLOCENE GREAT EARTHQUAKES AT THE NEHALEM RIVER ESTUARY, CENTRAL CASCADIA SUBDUCTION ZONE

2017 ◽  
Author(s):  
Alan R. Nelson ◽  
◽  
Yuki Sawai ◽  
Andrea D. Hawkes ◽  
Simon E. Engelhart ◽  
...  
Keyword(s):  
Subduction Zone ◽  
Late Holocene ◽  
River Estuary ◽  
Cascadia Subduction Zone ◽  
Great Earthquakes ◽  
History Of

ASSESSING THE UTILITY OF δ13C AND BULK GEOCHEMISTRY IN ESTUARIES ALONG THE CASCADIA SUBDUCTION ZONE FOR COASTAL PALEOSEISMOLOGY

2017 ◽  
Author(s):  
Robert J. O'Donnell ◽  
◽  
Andrea D. Hawkes ◽  
Chad S. Lane ◽  
Simon E. Engelhart ◽  
...  
Keyword(s):  
Subduction Zone ◽  
Cascadia Subduction Zone
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