Fluid Injection and Seismic Activity in the Northern Montney Play, British Columbia, Canada, with Special Reference to the 17 August 2015Mw 4.6 Induced Earthquake

2017 ◽  
Vol 107 (2) ◽  
pp. 542-552 ◽  
Author(s):  
Alireza Babaie Mahani ◽  
Ryan Schultz ◽  
Honn Kao ◽  
Dan Walker ◽  
Jeff Johnson ◽  
...  
Keyword(s):  
British Columbia ◽  
Special Reference ◽  
Seismic Activity ◽  
Fluid Injection ◽  
Induced Earthquake

Controlling Induced Earthquake Magnitude by Cycled Fluid Injection

2021 ◽  
Vol 48 (19) ◽  
Author(s):  
J. B. Zhu ◽  
J. Q. Kang ◽  
D. Elsworth ◽  
H. P. Xie ◽  
Y. Ju ◽  
...  
Keyword(s):  
Earthquake Magnitude ◽  
Fluid Injection ◽  
Induced Earthquake

Urban landslides in the vicinity of Vancouver, British Columbia, with special reference to the December 1979 rainstorm

1981 ◽  
Vol 18 (2) ◽  
pp. 205-216 ◽  
Author(s):  
G. H. Eisbacher ◽  
J. J. Clague
Keyword(s):  
British Columbia ◽  
Special Reference ◽  
Urban Areas ◽  
Debris Flows ◽  
Unconsolidated Sediments ◽  
Runoff Water ◽  
Protective Measures ◽  
Local Newspapers ◽  
Debris Avalanches ◽  
Autumn And Winter

Historical landslides in the urbanized Vancouver region, southwestern British Columbia, have almost commonly occurred along escarpments within and at the margins of gently rolling upland surfaces underlain by Pleistocene unconsolidated sediments. The most common and most destructive landslides are debris avalanches and debris flows. They are triggered by intense autumn and winter rainstorms, when water infiltrates and saturates the surficial layer of weathered colluvium. After failure the veneer of debris gains momentum and picks up additional soil and uprooted vegetation. Debris avalanches may temporarily block gullies swollen with runoff water, thus changing into rapidly moving debris flows.A severe rainstorm in December 1979 was accompanied by destructive debris avalanches and debris flows in urban areas in the vicinity of Vancouver. A search of local newspapers and meteorological records back to 1900 indicates that this event was not unique, for at least 26 other comparable storms have triggered landslides in the Vancouver region during this century. Thus it is likely that landslides similar to those of December 1979 will occur repeatedly in the future. The danger of such landslides to life and property will grow if potentially hazardous sites are urbanized without appropriate protective measures.

scholarly journals Dynamic Fault Interaction during a Fluid-Injection-Induced Earthquake: The 2017 Mw 5.5 Pohang Event

2020 ◽  
Vol 110 (5) ◽  
pp. 2328-2349
Author(s):  
Kadek Hendrawan Palgunadi ◽  
Alice-Agnes Gabriel ◽  
Thomas Ulrich ◽  
José Ángel López-Comino ◽  
Paul Martin Mai
Keyword(s):  
Fault Plane ◽  
Fluid Pressure ◽  
Local Stress ◽  
Stress Conditions ◽  
Fluid Injection ◽  
Geothermal System ◽  
Dynamic Rupture ◽  
Fault Interaction ◽  
Induced Earthquake ◽  
Secondary Fault

ABSTRACT The 15 November 2017 Mw 5.5 Pohang, South Korea, earthquake has been linked to hydraulic stimulation and fluid injections, making it the largest induced seismic event associated with an enhanced geothermal system. To understand its source dynamics and fault interactions, we conduct the first 3D high-resolution spontaneous dynamic rupture simulations of an induced earthquake. We account for topography, off-fault plastic deformation under depth-dependent bulk cohesion, rapid velocity weakening friction, and 1D subsurface structure. A guided fault reconstruction approach that clusters spatiotemporal aftershock locations (including their uncertainties) is used to identify a main and a secondary fault plane that intersect under a shallow angle of 15°. Based on simple Mohr–Coulomb failure analysis and 180 dynamic rupture experiments in which we vary local stress loading conditions, fluid pressure, and relative fault strength, we identify a preferred two-fault-plane scenario that well reproduces observations. We find that the regional far-field tectonic stress regime promotes pure strike-slip faulting, whereas local stress conditions constrained by borehole logging generate the observed thrust-faulting component. Our preferred model is characterized by overpressurized pore fluids, nonoptimally oriented but dynamically weak faults and a close-to-critical local stress state. In our model, earthquake rupture “jumps” to the secondary fault by dynamic triggering, generating a measurable non-double-couple component. Our simulations suggest that complex dynamic fault interaction may occur during fluid-injection-induced earthquakes and that local stress perturbations dominate over regional stress conditions. Therefore, our findings have important implications for seismic hazard in active georeservoir.

On the control of slip modes and seismic activity of faults using drilling fluid injection

2020 ◽  
Author(s):  
Valery V. Ruzhich ◽  
Andrey G. Vakhromeev ◽  
Elena A. Levina ◽  
Evgeny V. Shilko
Keyword(s):  
Seismic Activity ◽  
Drilling Fluid ◽  
Fluid Injection

Did (Or Will) Fluid Injection Cause Earthquakes? - Criteria for a Rational Assessment

1993 ◽  
Vol 64 (3-4) ◽  
pp. 207-224 ◽  
Author(s):  
Scott D. Davis ◽  
Cliff Frohlich
Keyword(s):  
Injection Site ◽  
Seismic Activity ◽  
Rocky Mountain ◽  
Fluid Injection ◽  
Earthquake Activity ◽  
Convenient Tool ◽  
Deep Wells ◽  
Rocky Mountain Arsenal ◽  
Induced Seismic Activity

Abstract Occasionally, the injection of fluids into deep wells causes or triggers earthquake activity. We propose two lists of yes-or-no questions to assess 1) whether an ongoing injection project has induced an earthquake that has already occurred; or 2) whether a proposed injection project is likely to induce a nearby earthquake. The answers to these questions form a descriptive profile of the injection project that facilitates comparison with other projects. To illustrate the application of these questions, we describe the answers in detail for the first set of questions at two sites: 1) the Rocky Mountain Arsenal near Denver, Colorado, where three significant earthquakes occurred in 1967; and 2) an injection site near Painesville, Ohio, near the epicenter of an earthquake that occurred 31 January, 1986. We also present a table of answers to these questions for several additional sites, and review other factors that may affect the potential for induced, seismic activity. The profiles of injection sites presented herein provide a convenient tool for deciding whether an injection site more closely resembles other sites where injection does, or does not induce earthquakes.

REVIEW OF TULARAEMIA IN BRITISH COLUMBIA, WITH SPECIAL REFERENCE TO A RECENT HUMAN CASE

1936 ◽  
Vol 68 (6) ◽  
pp. 121-124
Author(s):  
T. K. Moilliet
Keyword(s):  
British Columbia ◽  
North America ◽  
Special Reference ◽  
Human Case ◽  
Widespread Distribution

Since its discovery in rodents by McCoy3 in California in 1911, tularaemia has been found to have a widespread distribution in North America. The same year it was described by Pearsd12 as an insect-borne disease. Francis1. in 1919- 1920 correlated these two manifestations and to him we owe most of our knowledge of the disease. It is now known to be contracted by man either by contact with infected animals or by the bites of flies or ticks which have become carriers through biting diseased rodents prior to attacking man, or even from the excreta of these insects.

Sign in / Sign up

Export Citation Format

Share Document