The simulated annealing method has recently been applied to several multiparameter optimization problems, including those of geophysical inversion. A new variant of simulated annealing, called very fast simulated annealing (VFSA), overcomes some of the drawbacks of a conventional simulated annealing; it has been found to be a practical tool for geophysical inversion (Sen & Stoffa 1995). The met...

Julien Jumelet, Slimane Bekki, Christine David, Philippe Keckhut, G. Baumgarten. Size distribution time series of a polar stratospheric cloud observed above Arctic Lidar Observatory for Middle Atmosphere Research (ALOMAR) (69N) and analyzed from multiwavelength lidar measurements during winter 2005. Journal of Geophysical Research: Atmospheres, American Geophysical Union, 2009, 114, pp.D02202. .

The paper presents interesting data on a critical issue: estimation of carbon stocks of tropical peatlands. However, the paper, as currently written, is not well structured for Biogeoscience discussion. It is too technical and focused on the geophysical methods. The paper should be restructured and extended for a publication in Biogeoscience discussions or sent to another journal more focused o...

Todd Faulkner is a staff scientist with ENSCO, Inc. and has 12 years experience in geophysical signal processing and development of geolocation technologies. His areas of interest include optimal estimation, signal processing and novel applications of inertial navigation technologies. Mr. Faulkner obtained his B.S. in Geophysical Engineering from Colorado School of Mines in 1998. Faulkner.todd@...

Permafrost (frozen ground that remains at or below 0◦C for at least two consecutive years) covers 24% of northern circumpolar continents (Zhang et al. 1999). Thawing permafrost in a warming climate can cause hazards of serious concern: (1) Significant amounts of greenhouse gases can be released into the atmosphere due to large-scale microbial decomposition of organic matter that are previously ...

Understanding how hydrological and biogeochemical properties change over space and time in response to remedial treatments is hindered by our ability to monitor these processes with sufficient resolution and over field relevant scales. Here, we explored the use of geophysical approaches for monitoring the spatiotemporal distribution of hydrological and biogeochemical transformations associated ...

s and Conference Proceedings Segall, P. and J.R. Rice, Dilatancy, compaction, and slip instability of a fluid-infiltrated fault, EOS. Transactions, American Geophysical Union, Vol. 75, No. 44, p. 425,1994. MOSSOP, Antony, and P. Segall. Induced seismicity at The Geysers, Northern California (EOS, TRANSACTIONS, AMERICAN GEOPHYSICAL UNION ; Vol. 75, No. 44, Suppl., p. 444, 1994). MOSSOP, Antony. ...

Motivated by ongoing efforts to understand the nature and the energy potential of geothermal resources, we devise a coupled numerical model (hydrological, thermal, mechanical), which may help in the characterization and monitoring of hydrothermal systems through computational experiments. Hydrothermal areas in volcanic regions arise from a unique combination of geological and hydrological featu...