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  • 1
    Online Resource
    Online Resource
    Enhanced Surface Imaging of Crustal Deformation : Obtaining Tectonic Force Fields Using GPS Data (2015)
    Cham : Springer International Publishing
    Details Availability
    Keywords: Geography ; Physical geography ; Geology ; Earth Sciences ; Geophysics. ; Natural disasters. ; Mathematical physics. ; Geography ; Physical geography ; Geology ; Geology, Structural ; Imaging systems in geology ; Plate tectonics -- Research ; Faults (Geology) ; Global Positioning System ; Inversion (Geophysics) ; Rock deformation ; Earth (Planet) ; Südinsel ; Rezente Krustenbewegung ; GPS ; Messung ; Seismometrie ; Neuseeland ; Erdbeben ; Neotektonik ; Krustenbewegung ; Deformation ; Deformationsmessung ; Südinsel ; Rezente Krustenbewegung ; GPS ; Messung ; Seismometrie ; Neuseeland ; Erdbeben ; Neotektonik ; Krustenbewegung ; Deformation ; Deformationsmessung
    Description / Table of Contents: 1. Introduction.- 2. Introduction to the Vertical Derivatives of Horizontal Stress (VDoHS) Rates -- 3. Inversion Methodology -- 4. 1-Dimensional Synthetic Examples -- 5. Application to Central South Island, New Zealand -- 6. 2-Dimensional Examples -- 7. Concluding Remarks.
    Type of Medium: Online Resource
    Pages: Online-Ressource (X, 99 p. 50 illus., 37 illus. in color, online resource)
    Edition: 1st ed. 2015
    ISBN: 9783319215785
    Series Statement: SpringerBriefs in Earth Sciences
    URL: https://doi.org/10.1007/978-3-319-21578-5
    URL: http://dx.doi.org/10.1007/978-3-319-21578-5
    URL: https://zbmath.org/?q=an:1327.86002
    DOI: 10.1007/978-3-319-21578-5
    Language: English
    Note: Description based upon print version of record , 1. Introduction.- 2. Introduction to the Vertical Derivatives of Horizontal Stress (VDoHS) Rates3. Inversion Methodology -- 4. 1-Dimensional Synthetic Examples -- 5. Application to Central South Island, New Zealand -- 6. 2-Dimensional Examples -- 7. Concluding Remarks.
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  • 2
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    Observations of Laboratory and Natural Slow Slip Events: Hikurangi Subduction Zone, New Zealand (2021)
    Details
    Publication Date: 2021-07-21
    Description: Slow slip events (SSEs) are recognized as an important component of plate boundary fault slip, and there is a need for laboratory friction data on natural samples to guide comparisons with natural SSEs. Here, we compile a comprehensive catalog of SSEs observed geodetically at the Hikurangi subduction zone offshore northern New Zealand, and compare it with results of laboratory friction experiments that produce laboratory SSEs under plate tectonic driving rates (5 cm/yr). We use samples from Ocean Drilling Program Site 1124 seaward of the Hikurangi subduction zone to represent the plate boundary that hosts shallow SSEs at Hikurangi. We find that laboratory SSEs exhibit a similar displacement record and range of stress drops as the natural SSEs. Results of velocity step tests, which can be used to evaluate frictional instability based on the critical stiffness criterion, indicate that the slow slip activity at Hikurangi is a form of stably-accelerating slip. Our laboratory SSEs provide an alternative method of quantifying (in)stability by direct measurement of the unloading stiffness during the stress drop. The observed dependence of laboratory SSE parameters on effective normal stress is consistent with critical stiffness theory; however, depth-increasing projections based on laboratory data do not match observations from natural SSEs. These differences are likely related to changing temperature and fault rock composition downdip but also complications related to scaling and/or limited sampling. Scientific drilling recently undertaken at the Hikurangi subduction zone should serve to improve and guide future studies of the role of frictional properties for the occurrence of SSEs.
    Keywords: 551.8 ; Hikurangi ; slow slip ; subduction zone ; friction ; GPS ; fault
    Language: English
    Type: article
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