A general proecological urban road traffic control idea for the street canyon is proposed with emphasis placed on development of advanced continuum field gasdynamical (hydrodynamical) control model of the street canyon. The continuum field model of optimal control of street canyon is studied. The mathematical physics approach (Eulerian approach) to vehicular movement, to pollutants’ emission an...

Canyon incision into mountain topography is commonly used as a proxy for surface uplift driven by tectonic or geodynamic processes, but climatic changes can also instigate incision. The ~1250-kilometer (km)-long eastern margin of the Andean Plateau hosts a series of 1.5- to 2.5-km-deep canyons that cross major deformation zones. Using (U-Th)/He thermochronology, we document a transition from Mi...

Re-evaluation of acoustic, gamma ray and dip meter logs from the Cominco American Federal No. 2 well in the Sevier Desert basin of west-central Utah sheds new light on the interpretation of Neoproterozoic and Cambrian stratigraphy and Mesozoic structure in a region that has been influential in the development of ideas about crustal shortening and extension. The most prominent of several major t...

Abstract The La Jolla Canyon System (LJCS) is a small, steep, shelf-incising canyon offshore of San Diego, California. Observations conducted in the fall 2016 capture dynamics internal tides and turbulence patterns. Semidiurnal (D 2 ) energy flux was oriented up-canyon; 62% ± 20% signal contained mode 1 at mooring. observed mode-1 D tide partly standing based on ratio group speed times c g E F ...

Abstract This article introduces an intuitive conservation dilemma called the Canyon Dilemma: Is it possible to condemn mining of Grand Canyon, even by a poor generation, while also permitting this generation’s unremarkable small canyon? It then argues that not one several prominent theories environmental justice, including various forms egalitarianism, welfarism, deep-ecological theories, comm...

Extreme flood events have the potential to cause catastrophic landscape change in short periods of time (10(0) to 10(3) h). However, their impacts are rarely considered in studies of long-term landscape evolution (>10(3) y), because the mechanisms of erosion during such floods are poorly constrained. Here we use topographic analysis and cosmogenic (3)He surface exposure dating of fluvially scul...

Abstract Landslide-dams, which are often transient, can strongly affect the geomorphology, and sediment geochemical fluxes, within subaerial fluvial systems. The potential occurrence impact of analogous landslide-dams in submarine canyons has, however, been difficult to determine due a scarcity sufficiently time-resolved observations. Here we present repeat bathymetric surveys major canyon, Con...

A general proecological urban road traffic control idea for the street canyon is proposed with emphasis placed on development of advanced continuum field gasdynamical (hydrodynamical) control model of the street canyon. The continuum field model of optimal control of street canyon is studied. The mathematical physics approach (Eulerian approach) to vehicular movement, to pollutants’ emission an...