Andrew H. Barclay

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, but the exact mechanism remained to be clarified. Here we analyse seismic data for the Endeavour segment of the Juan de Fuca ridge—a site of long-lived hydrothermal activity—recorded by seismometers located beneath the sea floor. Earthquake focal mechanisms derived from the data reveal a transition from normal faulting above the mid-crustal magma chamber(More)
We report the results of a seismic tomography experiment which images the three-dimensional nature of the crustal melt delivery system beneath a segment of the slow-spreading Mid-Atlantic Ridge. In the lower crust (s 3.5 km depth) near the segment center, inversion of first-arriving crustal P-waves reveals a pair of vertical pipe-like (6 10-km-diameter)(More)
OBJECTIVES Exploring associations between the gut microbiota and colonic inflammation and assessing sequential changes during exclusive enteral nutrition (EEN) may offer clues into the microbial origins of Crohn's disease (CD). METHODS Fecal samples (n=117) were collected from 23 CD and 21 healthy children. From CD children fecal samples were collected(More)
BACKGROUND A limited body of research suggests that ongoing maintenance enteral nutrition (MEN) can be beneficial in maintaining disease remission in Crohn's Disease (CD). We aimed to assess how achievable MEN is and whether it helps to prolong remission. METHODS Patients newly diagnosed with CD in 2010 and 2011 who commenced exclusive enteral nutrition(More)
Hydrothermal flow through seafloor black smoker vents is typically turbulent and vigorous, with speeds often exceeding 1 m/s. Although theory predicts that these flows will generate sound, the prevailing view has been that black smokers are essentially silent. Here we present the first unambiguous field recordings showing that these vents radiate(More)
[1] Shear wave splitting observed in microearthquake data at the axis of the Mid-Atlantic Ridge near 35°N has a fast polarization direction that is parallel to the trend of the axial valley. The time delays between fast and slow S wave arrivals range from 35 to 180 ms, with an average of 90 ms, and show no relationship with ray path length,(More)
Our society is not well prepared for an earthquake of this scale in the PNW. If a magnitude 9 earthquake along the coast occurred today, the US Federal Emergency Management Agency (FEMA) estimates that the direct financial losses would be $60 billion USD, while the Insurance Bureau of Canada expects losses of ~ $75 billion CAD in Canada. Because the locked(More)
There have been a number of reports recently that mother's breast milk may be a source of benefi cial bacteria that colonise her infant's gastrointestinal tract. 1 – 16 The human gut is the home of a large community of bacteria which plays a part in a range of activities which contribute to our health. Occupying the colon, where their collective number of(More)
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