PALEOSEISMIC AND STRUCTURAL CHARACTERIZATION OF THE HINES CREEK FAULT: DENALI NATIONAL PARK AND PRESERVE, ALASKA

The Hines Creek fault (HCF) is a Holocene-active fault in central Alaska. Its trace has been mapped several times, but data on the history of fault displacement is scarce. As a major crustal-scale geologic boundary with uncertain Quaternary tectonic activity, it is a priority for more to be known about the activity of this fault to better understand the hazards it presents to the Denali National Park and Preserve and Alaskan infrastructure. This study characterizes the late Quaternary activity of the HCF through surficial geologic mapping and paleoseismic investigations. Mapping revealed a very steep (~84°-88° apparent dip), north dipping fault plane and measurements from offset Pleistocene outwash terraces revealed south side-down vertical offsets of up to 12 m, indicating a steeply dipping reverse fault. Three paleoseismic trenches excavated across the fault trace provided a record of seismic activity and hold evidence for at least four prehistoric earthquakes in the last 2 ka. Slip rate calculations estimate movement on the HCF to be between 0.6mm yr-1 and1.2 mm yr-1. The active trace of the HCF follows the southern margin of the tectonically active Mount Healy anticline, suggesting a kinematic linkage between the fault that underlies this anticline and the HCF

Projected Linear Response Theory for Charge-Exchange Excitations and Double Beta Decay

The projected random phase approximation (PRPA) for charge-exchange excitations is derived from the time-dependent variational principle. Explicit results for the unperturbed energies (including the self-energy corrections), the PRPA matrices, and the transition matrix elements are presented. The effect of the projection procedure on the two-neutrino $\beta\beta$ decay in $^{76}Ge$ is briefly discussed.Comment: 12 pages text (LaTex) and 1 figure upon request, to be published in Phys. Lett.

Beta decay of r-process waiting-point nuclei in a self-consistent approach

Beta-decay rates for spherical neutron-rich r-process waiting-point nuclei are calculated within a fully self-consistent Quasiparticle Random-Phase Approximation, formulated in the Hartree-Fock-Bogolyubov canonical single-particle basis. The same Skyrme force is used everywhere in the calculation except in the proton-neutron particle-particle channel, where a finite-range force is consistently employed. In all but the heaviest nuclei, the resulting half-lives are usually shorter by factors of 2 to 5 than those of calculations that ignore the proton-neutron particle-particle interaction. The shorter half-lives alter predictions for the abundance distribution of r-process elements and for the time it takes to synthesize them.Comment: 14 pages RevTex, 10 eps figures, submitted to Phys. Rev.

Arbeiten zur Uebertragbarkeit und Praezisierung der Wirkungsmechanismen chemischer Belastung in verschiedenen Oekosystemen. Teilprojekt 2: Zoologische und mikrobiologische Parameter zum Streuabbau Abschlussbericht

Available from TIB Hannover: F95B83+a / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekSIGLEBundesministerium fuer Forschung und Technologie (BMFT), Bonn (Germany)DEGerman