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Sanborn maps of Nevada

Sanborn maps of Nevada

The University of Nevada, Reno (UNR), as part of its Nevada in Maps collection, has made Sanborn maps of 29 Nevada towns available online for free. The dates of the maps range from 1879 through 1923. From the site: "Nevada's early western settlement history was one of tenuous existence. Settlements, hardly towns much less cities, came and went usually as mining sites were exploited and declined. Few maps exist to document the existence and changes to these towns . . . This project is an effort to present online a full-color set of Nevada SanbornŽ and other Nevada town maps. There is no full set in any format available at any location in the state."

The site also features a very useful set of links that include information about Sanborn maps, information about the UNR map project, an inventory of various formats of Nevada town maps online, and a site that details the coordination between Sanborn maps and historic photographs of specific buildings in Nevada.

Feb 11, 2009 | Categories: Web resources | jridener

Digital maps of Scotland

Digital maps of Scotland

The National Library of Scotland has made over 8,000 maps, originally published between 1560 and 1935, available online. The digital maps are high resolution, zoomable scans that users can zoom and pan over with or without the use of a browser plug-in.

The map subjects include: all of Scotland, county maps, town plans/views, coasts of Scotland, military maps, Bathymetrical Survey of the Fresh-Water Lochs of Scotland, series maps, and estate maps. Users can also search the holdings and browse by mapmaker. The About page gives examples of many of the different types of maps available. Many of the maps are also available as digital overlays for Google Maps and Google Earth.

Feb 04, 2009 | Categories: Web resources | jridener

Recent earthquakes in California

Recent Earth quakes in California and Nevada 1/30/09

There hasn't been an earthquake around the Bay Area for awhile, right? Well, not really.

The USGS makes up-to-the-hour earthquake information for California and Nevada available as part of their Real-Time Earthquake Maps site. From the site's FAQ: "[The site] currently combines data from the Northern and Southern California and Nevada seismograph networks and will expand to include others. It is mirrored on multiple sites for robust service during earthquake sequences and network problems. It offers complete coverage with no gaps because of an overlapping system of maps. It provides text information on each earthquake and auxiliary information on some of them."

Other maps from this program include shake maps for northern and southern California, and special maps for Long Valley, Los Angeles, San Francisco, and Parkfield.

A great resource for local and international earthquake information can be found on the Berkeley Seismological Laboratory site. This site features a robust collection of earthquake information including: felt reports, CISN earthquake reports, earthquake maps and lists, and seismocams, and a blog, among other resources.

Jan 30, 2009 | Categories: News & Updates, Web resources | jridener

GeoEye view of the Presidential inauguration

Aerial view of the Presidential inaguruation 1/20/09

Courtesy of GeoEye

GeoEye has provided a half meter resolution satellite image of the Presidential inauguration on January 20, 2009. Groups of audience members are visible in the high resolution version, which can be downloaded.

Jan 21, 2009 | Categories: Trivia, Web resources | jridener

US Climate Change Science Program

US Climate Change Science Program

The US Climate Change Science Program (CCSP) is an organization that integrates the work and research of 13 federal agencies regarding climate and global change. One of the Program's largest initiatives has been The U.S. Global Change Research Program (USGCRP), which has had a broad range of accomplishments including: "documented and characterized several important aspects of the sources, abundances and lifetimes of greenhouse gases; has mounted extensive space-based monitoring systems for global-wide monitoring of climate and ecosystem parameters; has begun to address the complex issues of various aerosol species that may significantly influence climate parameters; has advanced our understanding of the global water and carbon cycles (but with major remaining uncertainties); and has developed several approaches to computer modeling of the global climate."

Additionally, the CCSP publishes various reports on the research done within its 13 agencies. Some examples of the most recent reports (all available online) are:

Coastal sensitivity to sea-level rise: A focus on the Mid-Atlantic region

Aerosol properties and their impacts on climate

Past climate variability and change in the Arctic and at high latitudes

Global Climate Change in the United States


Jan 21, 2009 | Categories: Web resources | jridener

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