Lmst

#faulting

Slab Tearing Along A Subducted Oceanic Plate Joint Beneath The Alaska Peninsula
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https://doi.org/10.1038/s41561-025-01749-6 <-- shared paper
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#fault #faulting #subduction #slab #oceanic #plate #trench #Alaska #USA #geophysics #seismic #seismology #remotesensing #tomography #model #modeling #seismicity #volcano #vulcanism #Aniakchak #asthenosphere #geology #structuralgeology #mantle

Landslide Influence On Delta Stratigraphy, Northeastern Gulf Of Mexico
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https://doi.org/10.1130/GES02908.1 <-- shared paper
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https://zenodo.org/records/15857064 <-- shared seismic reflection datasets
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#spatial #mapping #marine #submarine #chanels #canyons #GulfOfMexico #delta #massmovement #landslide #submarinelandslide #remotesensing #geophysics #seismic #reflection #engineeringgeology #sediment #sedimentology #delta #stratigraphy #hydrology #deepwater #fault #faulting #glacioeustatic #erosion #model #modeling #scarp #masstransport #shelf #shelfmargin #geologicmapping

Unravelling The Dance Of Earthquakes - Evidence Of Partial Synchronization Of The Northern San Andreas Fault And Cascadia Megathrust
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https://doi.org/10.1130/GES02857.1 <-- shared paper
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“Previous paleoseismic work has suggested a possible stress triggering relationship between the Cascadia subduction zone and the northern San Andreas fault based on similar event timings. Turbidite successions correlated to both systems may support this hypothesis. Historic earthquakes in 1980 and 1992 in the Cascadia subduction zone and the 1906 earthquake on the northern San Andreas fault left turbidite records that are temporally well constrained by bomb-carbon−supported age-depth models..."
#geology #USWest #Seattle #Washington #California #earthquake #engineeringeology #fault #faulting #SanAndreas #Cascadiasubductionzone #linked #Cascadia #research #sediment #sedimentology #Turbidite #paleoseismology #historic #spatial #spatialanalysis #spatiotemporal #model #modeling #stress #subduction #dating #radiocarbon #Holocene

New Research Aims To Better Predict And Understand Cascading Land Surface Hazards
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https://phys.org/news/2025-06-aims-cascading-surface-hazards.html <-- shared technical article
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https://doi.org/10.1126/science.adp9559 <-- shared paper
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#interconnected #geology #engineeringgeology #landcover #landsurface #GIS #spatial #mapping #landcover #hydrology #water #geomorphology # geomiorphmetry #risk #hazard #extremeweather #climatechange #cascading #cascadinghazards #debrisflow #wildfire #massmovement #landslides #flood #flooding #mudflow #susceptibility #chainreaction #spatialanalysis #spatiotemporal #prediction #management #planning #mitigation #multifactor #sediment #erosion #fluvial #earthquake #fault #faulting #hazardassessment #riskassessment #volcano #vulcanism #sealevelchange #cryosphere #ice #snow #GLOF #humanimpacts #urban #infrastructure #cost #economics #loss #damage #earthobservation #remotesensing #LiDAR #UAV

Non-Collisional Orogeny In Northeast Japan Driven By Nearby Same-Dip Double Subduction
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https://doi.org/10.1038/s41561-025-01704-5 <-- shared paper
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#geology #structuralgeology #japan #subduction #system #plate #geometry #mantle #tectonics #geodynamics #orogeny #Ryukyu #IzuBoninMarianas #kinematics #backarc #earthquake #fault #faulting #orogenesis #platetectonics

Increased Flood Exposure In The Pacific Northwest Following Earthquake-Driven Subsidence And Sea-Level Rise
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https://doi.org/10.1073/pnas.2424659122 <-- shared paper
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https://oregoncapitalchronicle.com/2025/05/02/big-one-coupled-with-rising-ocean-could-leave-many-in-northwest-living-in-flood-zones-study-finds/ <-- shared media article
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#GIS #spatial #mapping #coast #coastal #sealevelrise #sealevel #SLR #climatechange #PNW #PacificNorthWest #Cascadia #flood #flooding #risk #hazard #exposure #damage #infrastructure #publicsafety #geology #fault #faulting #engineeringgeology #subsidence #earthquake #floodplains #omgoing #spatialanalysis #model #deformation #modeling #roads #residents ##Washington #Oregon #California #subduction #communities #management #planning #mitigation #coastalengineering #sinking

Multispectral Remote Sensing Expression of Lineaments and Alteration Minerals in Part of Crystalline Rock Units of Southwestern Nigeria - Implication on Gold Prospecting
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https://doi.org/10.1016/j.oreoa.2025.100091 <-- shared paper
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#GIS #spatial #mapping #ASTER #Gold #Hydrothermal #HydrothermalAlteration #Lineament #Landsat #ETM #EnhancedThematicMapper #phyllic #Ilesha #schist #belt #geology #mining #Nigeria #naturalresources #mineral #mineralresources #golddeposits #aerogeophysical #remotesensing #geophysical #spatialanalysis #geomorphology #geomorphometry #alteration #propylitic #argillic #mineralogy #XRD #structuralgeology #lithology #PrincipalComponentAnalysis #PCA #prospecting #fracture #joints #faulting #Multispectral #Lineaments #Crystalline

aerial oblique image - existing gold mine, Nigeria

geology/geomorphology map - Showing VES Positions Overlay on Mineral Prospective Map

(a) Lineament Map of the Study Area (b) Lineament Density Map of the Study Area (c) Superposition of Lineament on Geology Map of the Study Area

maps of remote sensing data - (a) Composite (RGB) 7, 5, 2 Image of the Study Area (b) Composite (RGB) 3, 2, 1 Image of the Study Area (c) Composite (RGB) 4, 3, 1 Image of the Study Area (d) Composite (RGB) 3, 2, 1 Image of the Study Area

Deep Beneath California's Sierra Nevada, Earth's Lithosphere May Be Peeling Away
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https://phys.org/news/2025-01-deep-beneath-california-sierra-nevada.html <-- shared technical article
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https://doi.org/10.1029/2024GL111290 <-- shared paper
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#GIS #spatial #mapping #geology #lithosphere #California #SierraNevada #continentalcrust #crust #mantle #foundering #remotesensing #geophysics #geophysical #earthquake #spatialanalysis #spatiotemporal #structuralgeology #earthquake #seismic #seismology #Moho #platetectonics #tectonics #shearzone #faults #faulting #seismicity #model #modeling #3dmodel

photo - portion of the Sierra Nevadas, rocky landscape

maps - results from receiver function analysis, Sierra Nevada, California

cross-section schematic - Perspective view of imaged shear layer in geographic context for the central and southern Sierra

map - Study area. Seismic stations (triangles, dark gray = permanent, light gray = temporary), seismicity with 40+ km depth from USGS ComCat catalog 2006–2023 (blue circles); thin black rectangle is extent of Figure 2. Faults in light gray. Small inset map shows regional context; main figure area outlined. GO-Gorda plate; MTJ-Mendocino triple junction; PA-Pacific plate; YP-Yosemite National Park; FR-Fresno; MW-Mt. Whitney; RC-Ridgecrest. Blue station labels mark examples appearing in later figures.

Here’s How Earthquakes Are Measured
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https://www.nytimes.com/2024/12/05/us/earthquakes-measured-magnitude-richter-scale.html <-- shared media article
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https://www.usgs.gov/programs/earthquake-hazards/earthquake-magnitude-energy-release-and-shaking-intensity <-- shared technical article
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[I have experienced a number of earthquakes, including the 2001 Nisqually earthquake when I lived in Western Washington State.]
#GIS #spatial #mapping #earthquakes #seismology #magnitude #momentmagnitude #energy #geology #engineeringgeology #risk #hazard #scale #fault #faulting #Richter #logarithmic #rupture #engineering #buildingstandards #seismic #seismometers #shaking #quake #spatialanalysis #spatiotemporal #infrastructure

Jan. 17, 1994 file photo shows a portion of the Bullock's department store in Los Angeles' Northridge Fashion Center that collapsed in the Northridge earthquake. Twenty-five years ago this week, a violent, pre-dawn earthquake shook Los Angeles from its sleep, and sunrise revealed widespread devastation, with dozens killed and $25 billion in damage.

schematic / chart - Earthquake magnitudes and energy release, and comparison with other natural and man-made events.

Maps showing the shaking intensity from two different earthquakes with about the same magnitude.

schematic / chart / map - Visualizing the Power and Frequency of Earthquakes - https://www.visualcapitalist.com/visualizing-the-power-and-frequency-of-earthquakes/

Research Offers Insights Into Permian Basin Earthquake Hazards
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https://phys.org/news/2024-12-insights-permian-basin-earthquake-hazards.html <-- shared technical article
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https://doi.org/10.1306/intro10012424106 <-- shared paper(s)
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https://www.usgs.gov/programs/earthquake-hazards <-- USGS earthquake record, including catalogue
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#GIS #spatial #mapping #model #modeling #3dmodeling #Texas #NewMexico #well #fracking #injection #oilandgas #petroleumindustry #wastewater #PermianBasin #subsurface #reservoirs #fault #faulting #earthquake #sesimicity #inducedseismicity #geology #basin #spatialanalysis #spatiotemporal #risk #hazard #reservoirengineering #geomechanics #WestTexas #oil #gas #production #Midland #MidlandBasin #regulations

$photo - workers at a fracking rig in Midland, TX$

graphic - The cover of the special issue of AAPG Bulletin containing the seven Permian Basin studies led by researchers at the Bureau of Economic Geology at The University of Texas at Austin. The diagram illustrates the geologic complexity of Paleozoic strata used for wastewater disposal and the relationship to underlying seismogenic basement in the central Midland Basin of west Texas.

map - Generalized map of the Permian Basin showing earthquakes as merged with duplicates removed from the US Geological Survey for the period 2000–2023, Gan and Frohlich (2013) for 2009–2010, the Texas Seismological Network Earthquake Catalog for 2017–2023, and the New Mexico Tech Seismological Observatory for southeast New Mexico for 2019–2023.

Earthquake Hazard Uncertainties Improved Using Precariously Balanced Rocks
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https://doi.org/10.1029/2020AV000182 <-- shared paper
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#GIS #spatial #mapping #spatialanalysis #geomorphometry #probabilistic #seismichazard #analysis #PSHA #groundmotion #earthquake #risk #hazard #naturalhazard #quantitative #fault #faulting #geology #engineeringgeology #empirical #balancedrocks #PBR #California #cosmogenic #10Be #dating #model #modeling #hazardmodel #probability #infrastructure #cost #economics

photo - the Golden Rock in Myanmar is a precarious boulder that has acquired religious significance and is now a major tourist attraction

photo - markers are used along with LiDAR and drones to see if the boulders move over time

charts and photos - Fragility and fragility age results for precariously balanced rock DRW1. (a) 3-D model comparison to a field photo of the most slender view of DRW1 with the measured geometric parameters required for toppling calculations, alpha (α) and radius (R), labeled. (b) PGA (x axis) and PGV/PGA (y axis) vector ground-motion probability of toppling matrix fragility results, colored from blue to yellow with increasing probability of toppling. (c) 3-D model and field photo of DRW1 looking from the toppling direction with the cosmogenic 10Be exposure ages given in ky with 1σ errors at the sample locations. (d) Probability density function (PDF) of the cosmogenic 10Be exposure ages and uncertainties of individual samples collected around DRW1 shown by green lines and aggregated probability density function shown by black line. (e) PDF of all samples collected at the site to bound the fragility age of all seven PBRs shown by red lines, and black dashed line of whole site aggregated PDF. The youngest peak (n = 6) in the aggregated PDF (solid black line and 1.65σ gray shaded area) is selected as the best estimate fragility age of the Double Rock PBRs.

maps and photo - Maps of the Double Rock site in Central California. (a) Regional map showing the Double Rock site (black square) in relation to the Hosgri Fault Zone and other active faults in the USGS Quaternary Fault and Fold Database, shown in red, that contribute to the site's seismic hazard. Population centers are shown by black triangles and site of critical infrastructure by black star. (b) Geologic and geomorphic map of the Double Rock study area (modified from Dibblee & Minch, 2006) overlain on LiDAR hillshade image. The three chert outcrops on which the fragile geologic features form are labeled, and the localities investigated in this study are numbered. Field photo inset (looking toward 140°) shows the paleo-sea stacks DRE and DRW extending above the abandoned major alluvial fan complex Qf1 and modern sea stack DRM.

The 2023 US 50-State National Seismic Hazard Model - Overview And Implications
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https://www.usgs.gov/programs/earthquake-hazards/science/2023-national-seismic-hazard-model-whats-shaking <-- USGS technical article
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https://doi.org/10.1177/87552930231215428 <-- shared paper
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#GIS #spatial #mapping #earthquake #seismichazard #risk #hazard #shakemap #cost #economics #geology #engineeringgeology #hazardmodel #model #modeling #seismicity #faultruptures #groundmotions #probabilistic #probability #geostatistics #engineering #planning #management #mitigation #NSHM #forecast #infrastructure #publicsafety #hazardassessment #fault #faulting #structuralgeology #intensity #mercalli #buildingcode #design #publicpolicy #shakemap #engineeringrisk #future
@USGS @FEMA

A map from the 2018 United States Seismic Hazard Model showing highest hazard in red and lowest hazard in gray. Damage from various earthquakes around the U.S. is shown in the photographs. Larger versions of each photo can be found at: 2001 M6.8 Nisqually, Washington, 2014 M6.0 South Napa, California, 1994 M6.7 Northridge, California, 1975 M7.7 Kalapani, Hawaii, 2011 M5.8 Mineral, Virginia, and 2018 M7.1 Anchorage, Alaska.

maps - The 2023 Modified Mercalli Intensity (MMI) hazard maps of the conterminous United States showing estimates of earthquake shaking in terms of (1) 50% probability of exceedance (PE) in 50 years (somewhat likely), (b) 10% PE in 50 years (uncommon), and (c) 2% PE in 50 years (rare).

maps - Maps show faults, zones applied in the CEUS, and zones of ground-motion model (GMM) amplification for the 2023 50-State National Seismic Hazard Model. The inset map is a close-up view of the New Madrid seismic zone area (orange dashed boundary). Spatial boundaries include potentially induced earthquakes for the update and the previous 2018 zones, 2023 central and eastern United States (CEUS)–western United States (WUS) attenuation boundary update and 2018 boundary, WUS basins, and two areas of uniform seismicity. Fault sections for the WUS (Hatem et al., 2022a, 2022b) and for Alaska from Bender et al. (2021) are shown colored according to slip rates. Fault sections in the CEUS are not shown according to slip rates but all slip rates are less than 0.2 mm/year. The Alaska megathrust is represented by 14 segmented zones. Damaging earthquake locations are shown in all three maps. In addition, we show seismicity for Alaska (M7+) and Hawaii (M5+) (Petersen et al., 2021; Rukstales et al., 2021)....

maps and charts - Normalized probability density function grids of seismicity-based earthquake rates (no fault models) are displayed for (a) the western United States (WUS), (b) the central and eastern United States (CEUS), (c) Alaska, and (d) Hawaii...

Preliminary Observations of the 5 April 2024 Mw 4.8 New Jersey Earthquake
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https://doi.org/10.1785/0320240024 <-- shared paper
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https://doi.org/10.1785/0320240020 <-- shared paper
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https://doi.org/10.1177/87552930231215428 <-- shared paper
--
[This is ‘unusual’ seismic activity and shaking patterns for this part of the USA, on an ‘unmapped’ fault, and seemingly challenging existing models of earthquake risk in the region; while a 4.8 is not big, it must have been quite a surprise for the people in this heavily populated U.S. Northeast not used to such things (per the paper, the USGS estimated it was felt by some 42 million people.]
#GIS #spatial #mapping #earthquake #risk #hazard #spatialanalysis #model #modeling #NewJersey #USA #geology #engineeringgeology #seismic #USGS #seismology #fault #faulting #Tewksbury #DidYouFeelIt #geotechnical #NIST #remotesensing #InSAR #strikeslip #mechanism #thrust

Map showing the chance of any level of damaging earthquake shaking in 100 years from the 2023 50-State National Seismic Hazard Model.

Photos of Taylor’s Mill taken before and after the 5 April 2024, earthquake.

(a) Topographic map showing a mainshock (yellow star) and seismicity (open circles) across geological units from west‐northwest to east‐southeast: Catskills, Highland, Newark basin, and Atlantic Coastal plain. Ramapo fault trending northeast runs through the epicentral area toward Peekskill, New York (NY) (red lines). Border faults between the geologic units–Highland and Newark basin continue southwest from the epicenter through Pennsylvania (PA). Three large known historical earthquakes, 30 November 1783 M 5.3 New Jersey, 1 September 1895 M 4.1 New Jersey, and 10 August 1884 M 5.5 New York, are plotted by red squares. The 2024 Tewksbury earthquake is ∼20 km west of the 1895 earthquake. (b) Contour map showing mainshock peak ground velocity (PGV) measured on transverse‐component records filtered at 0.3–10 Hz. Stations used for the PGV estimation and Lg relative source time function (RSTF) analysis are plotted as open and gray triangles, respectively.

Geologic map of the epicentral area simplified from Owens et al. (1998) and Drake et al. (1996) draped over topography showing mapped faults (black lines), initial aftershock locations from U.S. Geological Survey (USGS) Comprehensive Earthquake Catalog (ComCat; U.S. Geological Survey [USGS], 2017; downloaded 7 April 2024, at 13:59 UTC; purple circles), and mainshock focal mechanism (see Data and Resources). The location of seismic station BRNJ, which was not recording during the mainshock, is shown by the red square. The New Jersey Highlands, composed of Mesoproterozoic to Ordovician igneous and metamorphic rocks, are shown to the northwest of the white line, and the Newark basin, composed of Mesozoic sedimentary and volcanic rocks, lies to the southeast. Background image is a shaded relief derived from the 10 m National Elevation Dataset (see Data and Resources). Seismicity in inset (gray dots and yellow stars) is from the USGS ComCat (USGS, 2017). The blue rectangle in the inset map indicates the region depicted in the larger figure.

Earthquake Focal Mechanisms – Life’s A Beach(Ball) [USGS]
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https://www.usgs.gov/observatories/yvo/news/earthquake-focal-mechanisms-lifes-a-beachball <-- shared technical link
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https://doi.org/10.1029/2003JB002675 <-- shared paper
--
#geology #faulting #risk #hazard #spatialanalysis #spatial #GIS #mapping #earthquake #beachball #beachballdiagram #slip #orientation #slipdirection #focalmechanism #focalsphere #structuralgeology #seismic #waves #compression #tension #mechanism #geomorphometry
@USGS

schematic - earthquake focal mechanisms

photo - rock slide after Hebgen Lake Earthquake

graphics and charts - Focal mechanism determined by moment tensor analysis, which uses a model to fit the long-period (~10 s period or greater) ground motion records recorded at multiple locations. This example is for a M4.4 event that occurred during the 2017 Maple Creek earthquake swarm. Left-hand plots show the fit between recorded ground motions at different seismic stations (black lines) and modeled ground motions (red dashed lines). The associated focal mechanism beachball diagram is shown at the right, with labels showing the directions to stations used in the model. Above the mechanism, various parameters of the model solution are listed. Depth indicates the earthquake depth. Strike indicates the horizontal directions of the two possible fault planes. Rake indicates the angle of modeled slip on those fault planes. Dip indicates the steepness angle of the fault plane from vertical. M0 indicates seismic moment of different components of the mechanism. Mw indicates moment magnitude. Percent DC is the percentage of the modeled source that represents simple faulting, while CLVD and ISO indicate deviations from simple faulting. Variance, Var. Red., and RES/Pdc indicate parameters associated with how well the model explains the data.

beach ball plots - Left hand plot shows a focal mechanism from an earthquake where the fault is horizontal (red line), and the motion is right-lateral strike skip. The initial direction of wave motion (either back toward the source or away from the source is shown by the arrows. Right hand plot shows the associated beachball diagram, with compressional (“C”) and tensional (“T”) quadrants labeled. (Source, wikipedia.com, By Mikenorton - Own work, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=4050363)

Most Detailed Study Yet Of Seismic Activity Links Fault Strength To Likelihood Of Large Earthquakes
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https://phys.org/news/2024-09-seismic-links-fault-strength-likelihood.html <-- shared technical article
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https://www.nature.com/articles/s41467-024-49422-7 <-- shared paper
--
[seems intuitive, but nice to see some data/analysis]
#GIS #spatial #mapping #monitoring #observations #network #seismicstations #earthquake #faults #faulting #Pacific #RingOfFire #Japan #geology #structuralgeology #risk #hazard #prediction #seismic #activity #seismology #strength #bvalue #model #modeling #numericmodeling #stress

maps - Researchers from Kyushu University deployed 1,000 seismic stations in the area around the epicenter of the 2000 Western Tottori Earthquake, allowing seismic observations of unprecedented accuracy.

graphic / block schematics - When the earth's crust contains many weak faults in random orientations, large earthquakes are unlikely to occur. However, when the earth's crust contains many strong faults that are oriented in characteristic direction, there is a higher likelihood that a large earthquake could occur.

maps - Dense seismic observation and detected events

photo - on the approach to Wajima, fallen boulders partially blocked roads

Earthquake Fault Friction’s Dependence On Temperature Different From Previously Thought
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https://today.usc.edu/earthquake-fault-frictions-dependence-on-temperature-different-from-previously-thought/ <-- shared technical article
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https://doi.org/10.1073/pnas.2405111121 <-- shared paper
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#model #modeling #earthquake #fault #faulting #numericmodeling #rock #friction #temperature #mechanics #stress #stressrelief #geology #structuralgeology #experiment #experimentation #brittle #ductile #deform #degrade #fracturing #thermal #predictive #prediction

photo - surface expression of a fault in hard rock, desert

New Study Seeks To Shed Light On Earthquake Hazards In The Gallatin Range
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https://www.usgs.gov/observatories/yvo/news/new-study-seeks-shed-light-earthquake-hazards-gallatin-range <-- shared technical article
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#GIS #spatial #mapping #remotesensing #LiDAR #earthquake #fault #scarps #faulting #opendata #3dep #NGTOC #ruptures #surfaceexpression #risk #hazard #geology #engineeringgeology #geomorphology #geomorphmetry #seismology #elevation #topography #EastGallatin #ReeseCreek #faultsystem #EGRCFS #GallatinRange #GardnersHole #Yellowstone #Wyoming #Montana #USA #glaciation #superposition #dating #geologichistory #NationalSeismicHazardModel #model #modeling #spatialanalysis #spatiotemporal #massmovement #hydrothermal #YellowstoneNationalPark
@USGS

photo - View to the southwest of the eastern front of the Gallatin Range from Gardners Hole. The East Gallatin-Reese Creek fault system runs along the base of the range at the prominent break-in-slope in the trees.

maps - Lidar hillshade maps of fault scarps that offset Pinedale glacial till along the East Gallatin-Reese Creek fault system (EGRCFS) near Fawn Creek (A) and Panther Creek (B). Fault scarps are visible as darker lineaments in the hillshade and are marked by the black arrows. Red rectangles on inset maps show location along the EGRCFS.

map - Shaded relief location map for the East Gallatin-Reese Creek fault system (EGRCFS) in northwest Yellowstone National Park (YNP). The location of the EGRCFS is shown as mapped in the U.S. Geological Survey Quaternary Fault and Fold Database, subdivided into the southern East Gallatin section (blue dashed line) and the northern Reese Creek section (black dashed line). Red rectangle on inset map shows location within Yellowstone National Park.

Most Detailed Study Yet Of Seismic Activity Links Fault Strength To Likelihood Of Large Earthquakes
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https://phys.org/news/2024-09-seismic-links-fault-strength-likelihood.html <-- shared technical article
--
https://doi.org/10.1038/s41467-024-49422-7 <-- shared paper
--
#GIS #spatial #mapping #earthquake #Japan #risk #hazard #seismology #bvalue #model #modeling #spatiotemporal #stress #sampling #spatialanalysis #fault #faulting #strength #magnitude #stressfield

maps - Researchers from Kyushu University deployed 1,000 seismic stations in the area around the epicenter of the 2000 Western Tottori Earthquake, allowing seismic observations of unprecedented accuracy.

charts - When the earth's crust contains many weak faults in random orientations, large earthquakes are unlikely to occur. However, when the earth's crust contains many strong faults that are oriented in characteristic direction, there is a higher likelihood that a large earthquake could occur.

maps and charts - Dense seismic observation and detected events

photo - Bystanders look at damages somewhere near Noto town in the Noto peninsula facing the Sea of Japan, northwest of Tokyo.

More Faults, More Resolution, More Features - The New Zealand Active Faults Database Webmap Gets A Major Upgrade
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https://www.gns.cri.nz/news/more-faults-more-resolution-more-features-the-nz-active-faults-database-webmap-gets-a-major-upgrade/ <-- shared technical article
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https://data.gns.cri.nz/af/ <-- New Zealand Active Faults home page/ webmap
--
#GIS #spatial #mapping #spatiotemporal #fault #faulting #NewZealand #earthquake #geology #risk #hazard #groundsurface #webmap #record #database #surfacetrace #geomorphology #geomorphmetry #NZAFD #infrastructure #earthquakeengineering #engineeringgeology #planning #urbanplanning #regulations #geotechnical #landuse #permits #slip #frequency #riskassessment #GNS
@gnsscience

graphic/map - portions of New Zealand, elevation model, with active faults shown

photo - example of house right over a surface fault rupture, Kaikoura, New Zealand, November 2016

screen shot - web map - New Zealand Active Faults Database

screen shot - web map - New Zealand Active Faults Database

Japan Issues First ‘Megaquake’ Warning For Nankai Trough After Strong Earthquake Hits Miyazaki [August 8th 2024]
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https://www.nzherald.co.nz/world/japan-issues-first-megaquake-warning-for-nankai-trough-after-strong-earthquake-hits-miyazaki/FPL7SAYODZGAXC6TGMJEXOC5TE/ <-- shared media article
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https://earthquakeinsights.substack.com/p/m71-earthquake-strikes-southern-japan <-- shared Earthquake Insights details page
--
#GIS #spatial #mapping #operationalearthquakeforecast #OEP #japan #NankaiTrough #megaquake #earthquake #Miyazaki #risk #hazard #model #modeling #fault #faulting #geology #engineeringgeology #structuralgeology #earthquakehazard #infrastructure #humanimpacts

Miyazaki Earthquake - schematic / graphic overview

Map of the Nankai Trough showing locations where geological evidence of great earthquakes has been identified. Right: list of known great earthquakes on the Nankai Trough. Source: Figure 1 of Garrett et al. (2016).

Seismicity around the M7.1 earthquake in map view and cross-section. Curved line in the cross-section is subduction interface model from slab2.0. Earthquakes are from the JMA catalog; focal mechanisms are from EMSC/GCMT/GFZ/ISC.

Left: Map showing the age of the ocean floor. Arrows show plate motion relative to southern Japan, in mm/yr. Black rectangle is location of figure on the right; black circles show earthquakes <100 km deep and red star is the recent M7.2.

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