This paper presents a reconnaissance study of regional flood patterns in the United States, focusing on peak discharges at several recurrence intervals and characteristics of flood-causing rainfall. Because of an interest in flash floods, attention was restricted to watersheds between 10 and 200 km in area. Data were obtained from 130 stream gaging stations with a consistent 30-year period of r...

The floods are an annual phenomenon on the Pacific Coast of Ecuador and can become devastating during El Niño years, especially in the Guayas watershed (32,300 km2), the largest drainage basin of the South American western side of the Andes. As limited information on flood extent in this basin is available, this study presents a monitoring of the spatio-temporal dynamics of floods in the Guayas...

In 2009, an expansion of West Nile virus (WNV) into the Canadian province of British Columbia was detected. Two locally acquired cases of infection in humans and 3 cases of infection in horses were detected by ELISA and plaque-reduction neutralization tests. Ten positive mosquito pools were detected by reverse transcription PCR. Most WNV activity in British Columbia in 2009 occurred in the hot ...

Repeated seismic surveys of the Landers, California, fault zone that ruptured in the magnitude (M) 7.5 earthquake of 1992 reveal an increase in seismic velocity with time. P, S, and fault zone trapped waves were excited by near-surface explosions in two locations in 1994 and 1996, and were recorded on two linear, three-component seismic arrays deployed across the Johnson Valley fault trace. The...

The effects of aldicarb on soybean cyst (Heterodera glycines) and root-knot (Meloidogyne incognita and M. arenaria) nematode populations, early season insect pests and soybean (Glycine max) yield were evaluated in five field experiments in northern and southern Alabama. Aldicarb significantly (P = 0.05) reduced nematode populations in only two cases: M. arenaria in Centennial soybean in the Wir...

Abstract Open‐basin lakes that have outlets, formed where the stored water breached basin‐confining topography (e.g., crater rims), been recognized on Mars for decades. However, mechanics involved in formation of these outlets has not studied detail. Here, we study this outlet process through a series numerical experiments accomplished by adding erosion and sediment transport routines to an exi...