Map of Quaternary-active faults in the San Francisco Bay region

Author(s):  
R.W. Graymer ◽  
William Bryant ◽  
C.A. McCabe ◽  
Suzanne Hecker ◽  
C.S. Prentice
1992 ◽  
Vol 8 (2) ◽  
pp. 225-257
Author(s):  
J. Litehiser ◽  
J. Marrone ◽  
N. Abrahamson

The results of a study of earthquake peak horizontal component acceleration hazard is presented for the nine counties of the San Francisco Bay Area. The main objective of the study is to develop an interim and simple estimate of the regional earthquake acceleration hazard using an extended hazard algorithm that allows a more complete consideration of recently published regional earthquake source parameters. Complexities of source directivity, soft foundation conditions, and site topography are not considered. Results are presented in the form of contour maps of acceleration on rock or stiff soil with a probability of exceedance of 10% for the next (as of 1990) 20 and 50 years. As would be expected, the locations of greatest earthquake shaking hazard in the Bay Area are near major active faults. When characteristic earthquake size, characteristic earthquake recurrence interval, and time of occurrence of the last earthquake along specified fault segments (if known) are explicitly used in the source model for larger earthquakes, the hazard computed depends significantly on these parameters. If smaller earthquakes are not constrained to major faults, but are considered to occur randomly throughout the Bay Area, significant high-frequency motion hazard at points away from the immediate vicinity of active faults comes from these smaller, randomly located earthquakes. All results show considerable variation of peak accelerations over areas generally treated as homogeneous in conventional engineering design practice for seismically active regions.


Author(s):  
Sheigla Murphy ◽  
Paloma Sales ◽  
Micheline Duterte ◽  
Camille Jacinto

2020 ◽  
Vol 14 (2) ◽  
pp. 44-66
Author(s):  
José Ramón Lizárraga ◽  
Arturo Cortez

Researchers and practitioners have much to learn from drag queens, specifically Latinx queens, as they leverage everyday queerness and brownness in ways that contribute to pedagogy locally and globally, individually and collectively. Drawing on previous work examining the digital queer gestures of drag queen educators (Lizárraga & Cortez, 2019), this essay explores how non-dominant people that exist and fluctuate in the in-between of boundaries of gender, race, sexuality, the physical, and the virtual provide pedagogical overtures for imagining and organizing for new possible futures that are equitable and just. Further animated by Donna Haraway’s (2006) influential feminist post-humanist work, we interrogate how Latinx drag queens as cyborgs use digital technologies to enhance their craft and engage in powerful pedagogical moves. This essay draws from robust analyses of the digital presence of and interviews with two Latinx drag queens in the San Francisco Bay Area, as well as the online presence of a Xicanx doggie drag queen named RuPawl. Our participants actively drew on their liminality to provoke and mobilize communities around socio-political issues. In this regard, we see them engaging in transformative public cyborg jotería pedagogies that are made visible and historicized in the digital and physical world.


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