Knowledge Resource Center for Ecological Environment in Arid Area
| 项目编号 | 1039147 |
| RAPID: Collaborative Research: Airborne Lidar Scan of the 4 April 2010 Sierra El Mayor, Baja California Earthquake Rupture | |
| J Ramon Arrowsmith | |
| 主持机构 | Arizona State University |
| 开始日期 | 2010-05-15 |
| 结束日期 | 2012-04-30 |
| 资助经费 | 112381(USD) |
| 项目类别 | Standard Grant |
| 资助机构 | US-NSF（美国国家科学基金会） |
| 项目所属计划 | EARTHSCOPE-SCIENCE UTILIZATION, COLLABORATIVE RESEARCH |
| 语种 | 英语 |
| 国家 | 美国 |
| 英文简介 | Surface ruptures provide a physically important accessible record of the distribution of slip in earthquakes and are the primary record of prehistoric seismic activity. Traditional field mapping and measurements may incompletely characterize surface ruptures due to their often complex, distributed nature. Prehistoric earthquake ruptures are also subject to surface processes that, over time, smooth out displaced features and mask critical components of the deformation field, such as warping of the land surface. This grant through the NSF EarthScope Program and the Americas Program of the NSF Office of International Science and Engineering supports the acquisition of very high-resolution airborne LiDAR topography over the surface rupture from the 4 April 2010 El Mayor - Cucapah earthquake in northernmost Baja California. The El Mayor - Cucapah earthquake ruptured the Pescadoros-Borrego fault system, which lies adjacent to the Laguna Salada fault that produced a similar-sized earthquake in 1892. Why the earthquake occurred where it did presents an important challenge to our understanding of the physics of earthquake slip and recurrence. Detailed comparison of the geometry of the 2010 and 1892 surface ruptures, engendered by the airborne LiDAR scan, will be especially important for assessing the relationship between these earthquakes. The El Mayor - Cucapah Earthquake occurred in a hyper-arid desert setting where little vegetation cover exists to obscure the rupture. Thus high-resolution digital elevation models (~25 cm resolution) may be generated with current scanning technology (>10 points/sq. m), providing very high-resolution measurements of the surface rupture from this earthquake in a near-pristine state. The data span the rupture belt as identified by initial aerial and satellite reconnaissance by at least 500-1000 meters. The data acquisition and analysis involve numerous students and strengthen US-Mexico earthquake science collaborations. Terrestrial laser scanning data covering select portions of the rupture at ultra high resolution (1000s of points/sq. m) will be embedded in the airborne data and their seamless visualization and analysis will be enabled using tools developed at the KeckCaves facility at UC Davis (http://keckcaves.ucdavis.edu/). These data, including the embedded ground-based LiDAR scans, will be made immediately available to the research community using the existing infrastructure of the OpenTopography Facility (http://www.opentopography.org/). They will significantly advance the state of the art in earthquake geology and address important questions on the nature and preservation of earthquake ground ruptures. The response to this earthquake enhances international collaboration and education opportunities. Close collaboration with scientists in Mexico has been central to the response to the El Mayor - Cucapah Earthquake. All data-gathering and dissemination activities will emphasize students from both the United States and Mexico. Openly available LiDAR data collected from the ground rupture will provide new opportunities for Mexican scientists and students to work with this imagery data, strengthening new collaborative relationships with U.S. scientists that have been established as part of the earthquake response. |
| 来源学科分类 | Geosciences |
| URL | https://www.nsf.gov/awardsearch/showAward?AWD_ID=1039147 |
| 资源类型 | 项目 |
| 条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/342563 |
| 推荐引用方式 GB/T 7714 | J Ramon Arrowsmith.RAPID: Collaborative Research: Airborne Lidar Scan of the 4 April 2010 Sierra El Mayor, Baja California Earthquake Rupture.2010. |
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