s and Program, Geological Society of America, Denver,Colo., 28(7,) A-261.Turcios, L. M., and Gray, J. R. (2001). „U.S. Geological Surveysediment and ancillary data on the World Wide Web.‰ Proceedings of the 7th Federal Interagency Sedimentation Conference, Subcommittee on Sedimentation, Reno, Nev.,Poster 31-36.Turcios, L. M., Gray, J. R., and Ledford, A. L. (2000). „...

The importance of automating feature generalization is increasing in conjunction with demands for updated data. Determining which features to represent at myriad scales is an important part of this process. The Principles of Selection, as proposed by Töpfer and Pillewizer in 1966, provide cartographers with an empirically based generalization rule. Also known as the Radical Law, the principles ...

Disasters often lead to other kinds of disasters, forming multi-hazards such as landslides, which may be caused by earthquakes, rainfalls, water erosion, among other reasons. Effective detection and management of multihazards cannot rely only on one information source. In this paper, we evaluate a landslide detection system LITMUS, which combines multiple physical sensors and social media to ha...

OBJECTIVE This study investigates the availability and frequency of emergency physician-performed ultrasonography (USG) in the emergency department (ED) and the status of USG training programs in emergency medicine residencies in academic EDs in Korea. METHODS In spring 2014, a link to a 16-question, multiple-choice, and rating scale web-based survey was e-mailed to all 97 academic ED residen...

The C1-ungrouped carbonaceous chondrite Flensburg fell in Germany on September 12, 2019, the daytime. We determined atmospheric trajectory, velocity, and heliocentric orbit using one dedicated AllSky6 meteor camera three casual video records of bolide. It was found that meteorite originated vicinity 5:2 resonance with Jupiter at distance 2.82 AU. When combined bolide energy reported by U.S. Gov...

in 2012 august 11 (12:23 utc) a moderate earthquake with mw=6.4 (usgs) occurred between ahar and varzaghan towns in azarbayjan province at northwest of iran. after eleven minutes another earthquake shook the area with mw=6.2 (usgs). these consecutive earthquakes followed by intensive sequences of aftershocks whereas the strongest one had mw=5.3 (usgs). in data processing including depth modific...

After decades of using only one map projection, the Polyconic, for its mapping program, the U.S. Geological Survey (USGS) now uses several of the more common projections for its published maps. For larger scale maps, including topographic quadrangles and the State Base Map Series, conformal projections such as the Transverse Mercator and the Lambert Conformal Conic are used. Equal-area and equi...

A USGS scientist collects data from an automated sampling system moored in Malibu Lagoon (July 2009). Photograph by John Izbicki, USGS. Each year, over 550 million people visit California’s public beaches. To protect beach-goers from exposure to waterborne disease, California state law requires water-quality monitoring for fecal indicator bacteria (FIB), such as enterococci and Escherichia coli...