Emperors of the Extreme

submitted by: ucsandiego

Emperor penguins can flourish in locales where few other animals roam. But scientists now wonder if they can adapt to a new threat: climate change.

SDSU Geological Sciences - Thesis - Steven Stuart

submitted by: tcarrasc
Groundwater and Surface Water Interactions at the Tijuana Estuary, San Diego County, California - The Tijuana Estuary is a unique coastal plain and wetland-dominated estuary influenced by tidal fluctuations and saltwater inflow from the Pacific Ocean and by intermittent freshwater inflow from the Tijuana River. The lower Tijuana River valley, the alluvial river valley that leads into the estuary, collects 96% of runoff in the 4,500 km2 Tijuana River watershed. Stream flow in the Tijuana...

SDSU Geological Sciences - Seminar - Shuo Ma

submitted by: tcarrasc
A Physical Model for Widespread Near-Surface and Fault Zone Damage Induced by Earthquakes - Seismic observations indicate that material velocities at shallow depths decrease over a large area after large earthquakes. The reductions are widespread, and occur at distances of up to several source dimensions. A persistent low-velocity fault zone has also been documented extensively from seismic and geodetic observations, in which the velocity drops further after large earthquakes. Dynamic...

SDSU Geological Sciences - Thesis - Ben Slotnick

submitted by: tcarrasc
Biotic response of Tethyan bathyal ostracodes through the Eocene-Oligocene Transition from the Massignano Composite Stratotype Section (east central Italy) - The Eocene-Oligocene Transition (EOT) is marked by a double-stepped ~1.3‰ positive excursion in d18O over an ~300 kyr interval (i.e., Oi-1; Miller et al., 1991; Zachos et al., 1996; Coxall et al., 2005) and a deepening of the calcium compensation depth (CCD) interpreted to represent marked Antarctic glaciation and global...

SDSU Geological Sciences - Seminar - Clive Dorman

submitted by: tcarrasc
Tidal Bore on the Severn River - Tides progress up the Severn River in SW England as a tidal bore moving faster than 6 m/s. During spring tides, the leading edge of the bore can be up to 2 m high, taking more than an hour to travel from the lower portion of the river to past Gloucester. This is sufficient to attract surfers from around the world. The North Atlantic amphidromic system interacts with the broad continental shelf around the U.K. to produce a complicated field of large tidal...

SDSU Geological Sciences - Seminar - J. Fred Bair

submitted by: tcarrasc
Development Geology of the Antelope Shale: Section 1Y, Cymric Field, San Joaquin Valley, California - The Antelope Shale reservoir in Section 1Y, Cymric Field, San Joaquin Valley, California is one of Chevron’s key assets. The reservoir is a Miocene Age member of the Monterey Formation composed of Opal A (amorphous), Opal CT (cristobalite, tridimite) and Quartz phase diatomaceous deep water sediments. The Antelope Shale has an anomalously high average porosity of 58%, high initial oil...