James F. Zumberge

TL;DR: This work determines precise GPS satellite positions and clock corrections from a globally distributed network of GPS receivers, and analysis of data from hundreds to thousands of sites every day with 40-Mflop computers yields results comparable in quality to the simultaneous analysis of all data.

TL;DR: In this article, baseline lengths and geocentric radii have been determined from GPS data without the use of fiducial sites and the geodetic information can be obtained by examining the structure of the polyhedron and its change with time.

TL;DR: In this article, the combined geodetic moment for the Landers and Big Bear earthquakes was analyzed and shown to be dominantly symmetric and the rupture extended farther south on the Johnson Valley fault than has been mapped on the basis of ground offsets.

TL;DR: Using carrier phase and pseudorange data from a small network of globally distributed GPS receivers with precise time references, the accuracy obtained is a factor of 100 to 1000 times better than that of clocks in the broadcast navigation message, and allows postprocessing of high-rate single-receiver kinematic GPS data with few-centimeter-level precision.

TL;DR: Geodetic measurements using the Global Positioning System and other techniques show north-south shortening near Los Angeles to be fastest across the northern part of the metropolitan area, where an ESE-striking, 5- to 40-km-wide belt lying to the south of San Gabriel Mountains and to the north of downtown and West Los Angeles is shortening at 5 mm/yr as mentioned in this paper.