Archeomagnetic dating in western North America: An updated reference curve based on paleomagnetic and archeomagnetic data sets

Using PHP and MySQL for Ranking and Displaying Archeomagnetic Data

We present a new archeointensity database application that stores data of the Earth’s magnetic field intensity for the last 7000 years. Our application allows users to query and rank data according to selectable criteria. It is also possible to plot the data as archeointensity curves. Users can access the database using any Web browser and see the results of their queries immediately on the scr...

Archeomagnetic Intensity Spikes: Global or Regional Geomagnetic Field Features?

Variations of the geomagnetic field prior to direct observations are inferred from archeoand paleomagnetic experiments. Seemingly unusual variations not seen in the present-day and historical field are of particular interest to constrain the full range of core dynamics. Recently, archeomagnetic intensity spikes, characterized by very high field values that appear to be associated with rapid sec...

Spatially and temporally continuous LAI data sets based on an integrated filtering method: Examples from North America

Leaf Area Index (LAI) is an important biophysical variable for characterizing the land surface vegetation. Global LAI product has been routinely produced from the MODerate resolution Imaging Spectroradiometer (MODIS) aboard the Terra and Aqua satellite platforms. However, the MODIS standard LAI product is not continuous both spatially and temporally. To fill the gaps and improve the quality, we...

Declining Mountain Snowpack in Western North America*

JANUARY 2005 AMERICAN METEOROLOGICAL SOCIETY | ountain snowpack in western North America is a key component of the hydrologic cycle, storing water from the winter (when most precipitation falls) and releasing it in spring and early summer, when economic, environmental, and recreational demands for water throughout the West are frequently greatest. In most river basins of the West, especially in...

Rock Art Tallies: Mathematics on Stone in Western North America