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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

Sanborn map indexes at EART

EART Sanborn map of Berkeley index

The Earth Sciences and Map Library has created a new series of updated index maps for its holdings of Sanborn fire insurance maps. The first maps in the series will cover Bay Area cities including Berkeley, Oakland, and San Francisco.

Some of the index maps currently used to determine volume numbers in the Earth Sciences and Map Library collection have seen better days. Many of them are third- and fourth-generation photocopies of not-to-scale maps. These have proven difficult for patrons to use in determining coverage for their areas of interest and have caused needless hours of extra work and searching.

Library staff members John Ridener and Zach Veley created the new maps from the old indexes found in Sanborn volumes. The maps were created using ArcGIS with data files for local roads and state highways provided by the California Environmental Information Clearinghouse. The volume boundaries were crosschecked with the online Sanborn maps, creating the historic boundaries of the Sanborn volumes over a contemporary map.

Hopefully this index series will prove useful in locating contemporary sites on historic maps.

Jan 12, 2009 | Categories: News & Updates, How To: | jridener

Maps from "A Cartographic Journey Through Las Vegas History"

Portion of Las Vegas realty map

Campbell Realty Company. [1957?] A general map of Las Vegas, Nevada. Las Vegas, Nev.: Campbell Realty: Distributed by Las Vegas Nevada Chamber of Commerce.

The Western Association of Map Libraries (WAML) publishes its Information Bulletin three times a year. The official publication of the association, it, "includes feature articles, photoessays, association business and selected news and notes related to all forms of cartographic information, including maps, spatial data, GIS, and all aspects of map librarianship."

The July, 2008 issue features two web pages of historic maps of Las Vegas. These 27 maps from various sources chronicle the cartographic developments and changes in mapping the Las Vegas area from 1848 - 2008. These images accompany the article, "A Cartographic Journey Through Las Vegas History: Tracing the Las Vegas Landscape Through Maps" by Su Kim Chung and Kathy Rankin, University of Nevada, Las Vegas.


Jan 07, 2009 | Categories: Web resources | jridener

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