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  • 1
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    In:  Journal of Geophysical Research, Amsterdam, Elsevier Scientific Publishing Company, vol. 103, no. B5, pp. 10141-10160, pp. B12308
    Publication Date: 1998
    Keywords: Fault zone ; SAF ; Geol. aspects ; JGR ; J ; w/out ; dot
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  • 2
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    Elsevier
    In:  Professional Paper, Structural Geology and Personal Computers, New York, Elsevier, vol. 15, no. 16, pp. 359-388, (ISBN 1-86239-165-3, vi + 330 pp.)
    Publication Date: 1996
    Keywords: cracks and fractures (.NE. fracturing) ; Fracture ; Elasticity ; Rock mechanics ; Mathematica ; MATLAB ; MAPLE ; Modelling ; J ; w/out ; dot
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  • 3
    Publication Date: 2016-04-27
    Description: The northern Tien Shan of Kyrgyzstan and Kazakhstan has been affected by a series of major earthquakes in the late 19th and early 20th centuries. To assess the significance of such a pulse of strain release in a continental interior, it is important to analyze and quantify strain release over multiple time scales. We have undertaken paleoseismological investigations at two geomorphically distinct sites (Panfilovkoe and Rot Front) near the Kyrgyz capital Bishkek. Although located near the historic epicenters, both sites were not affected by these earthquakes. Trenching was accompanied by dating stratigraphy and offset surfaces using luminescence, radiocarbon, and 10 B e terrestrial cosmogenic nuclide methods. At Rot Front, trenching of a small scarp did not reveal evidence for surface rupture during the last five thousand years. The scarp rather resembles an extensive debris-flow lobe. At Panfilovkoe, we estimate a late Pleistocene minimum slip rate of 0.2 ± 0.1 mm/a, averaged over at least two, probably three earthquake cycles. Dip-slip reverse motion along segmented, moderately steep faults resulted in hanging-wall collapse scarps during different events. The most recent earthquake occurred around 3.6 ± 1.3 kyr ago (1 σ ), with dip-slip offsets between 1.2 and 1.4m. We calculate a probabilistic paleomagnitude to be between 6.7 and 7.2, which is in agreement with regional data from the Kyrgyz range. The morphotectonic signals in the northern Tien Shan are a prime example of deformation in a tectonically active intracontinental mountain belt and as such can help understand the longer-term co-evolution of topography and seismogenic processes in similar structural settings worldwide.
    Print ISSN: 0148-0227
    Topics: Geosciences , Physics
    Published by Wiley on behalf of American Geophysical Union (AGU).
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  • 4
    Publication Date: 2010-01-23
    Description: The moment magnitude (Mw) 7.9 Fort Tejon earthquake of 1857, with a approximately 350-kilometer-long surface rupture, was the most recent major earthquake along the south-central San Andreas Fault, California. Based on previous measurements of its surface slip distribution, rupture along the approximately 60-kilometer-long Carrizo segment was thought to control the recurrence of 1857-like earthquakes. New high-resolution topographic data show that the average slip along the Carrizo segment during the 1857 event was 5.3 +/- 1.4 meters, eliminating the core assumption for a linkage between Carrizo segment rupture and recurrence of major earthquakes along the south-central San Andreas Fault. Earthquake slip along the Carrizo segment may recur in earthquake clusters with cumulative slip of approximately 5 meters.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Zielke, Olaf -- Arrowsmith, J Ramon -- Grant Ludwig, Lisa -- Akciz, Sinan O -- New York, N.Y. -- Science. 2010 Feb 26;327(5969):1119-22. doi: 10.1126/science.1182781. Epub 2010 Jan 21.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉School of Earth and Space Exploration, Arizona State University, Tempe, AZ 85287, USA. olaf.zielke@asu.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20093436" target="_blank"〉PubMed〈/a〉
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 5
    Publication Date: 2010-01-23
    Description: The spatial and temporal distribution of fault slip is a critical parameter in earthquake source models. Previous geomorphic and geologic studies of channel offset along the Carrizo section of the south central San Andreas Fault assumed that channels form more frequently than earthquakes occur and suggested that repeated large-slip earthquakes similar to the 1857 Fort Tejon earthquake illustrate typical fault behavior. We found that offset channels in the Carrizo Plain incised less frequently than they were offset by earthquakes. Channels have been offset by successive earthquakes with variable slip since ~1400. This nonuniform slip history reveals a more complex rupture history than previously assumed for the structurally simplest section of the San Andreas Fault.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Grant Ludwig, Lisa -- Akciz, Sinan O -- Noriega, Gabriela R -- Zielke, Olaf -- Arrowsmith, J Ramon -- New York, N.Y. -- Science. 2010 Feb 26;327(5969):1117-9. doi: 10.1126/science.1182837. Epub 2010 Jan 21.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Program in Public Health and California Institute for Hazards Research, University of California, Irvine, CA 92697, USA. lgrant@uci.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20093439" target="_blank"〉PubMed〈/a〉
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 6
    Publication Date: 2012-02-11
    Description: Large [moment magnitude (M(w)) 〉/= 7] continental earthquakes often generate complex, multifault ruptures linked by enigmatic zones of distributed deformation. Here, we report the collection and results of a high-resolution (〉/=nine returns per square meter) airborne light detection and ranging (LIDAR) topographic survey of the 2010 M(w) 7.2 El Mayor-Cucapah earthquake that produced a 120-kilometer-long multifault rupture through northernmost Baja California, Mexico. This differential LIDAR survey completely captures an earthquake surface rupture in a sparsely vegetated region with pre-earthquake lower-resolution (5-meter-pixel) LIDAR data. The postevent survey reveals numerous surface ruptures, including previously undocumented blind faults within thick sediments of the Colorado River delta. Differential elevation changes show distributed, kilometer-scale bending strains as large as ~10(3) microstrains in response to slip along discontinuous faults cutting crystalline bedrock of the Sierra Cucapah.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Oskin, Michael E -- Arrowsmith, J Ramon -- Hinojosa Corona, Alejandro -- Elliott, Austin J -- Fletcher, John M -- Fielding, Eric J -- Gold, Peter O -- Gonzalez Garcia, J Javier -- Hudnut, Ken W -- Liu-Zeng, Jing -- Teran, Orlando J -- New York, N.Y. -- Science. 2012 Feb 10;335(6069):702-5. doi: 10.1126/science.1213778.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Geology, University of California, Davis, 1 Shields Avenue, Davis, CA 95618, USA. meoskin@ucdavis.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/22323817" target="_blank"〉PubMed〈/a〉
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 7
    Publication Date: 2015-03-06
    Description: Sedimentary basins in eastern Africa preserve a record of continental rifting and contain important fossil assemblages for interpreting hominin evolution. However, the record of hominin evolution between 3 and 2.5 million years ago (Ma) is poorly documented in surface outcrops, particularly in Afar, Ethiopia. Here we present the discovery of a 2.84- to 2.58-million-year-old fossil and hominin-bearing sediments in the Ledi-Geraru research area of Afar, Ethiopia, that have produced the earliest record of the genus Homo. Vertebrate fossils record a faunal turnover indicative of more open and probably arid habitats than those reconstructed earlier in this region, which is in broad agreement with hypotheses addressing the role of environmental forcing in hominin evolution at this time. Geological analyses constrain depositional and structural models of Afar and date the LD 350-1 Homo mandible to 2.80 to 2.75 Ma.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉DiMaggio, Erin N -- Campisano, Christopher J -- Rowan, John -- Dupont-Nivet, Guillaume -- Deino, Alan L -- Bibi, Faysal -- Lewis, Margaret E -- Souron, Antoine -- Garello, Dominique -- Werdelin, Lars -- Reed, Kaye E -- Arrowsmith, J Ramon -- New York, N.Y. -- Science. 2015 Mar 20;347(6228):1355-9. doi: 10.1126/science.aaa1415. Epub 2015 Mar 4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Geosciences, Pennsylvania State University, University Park, PA 16802, USA. dimaggio@psu.edu kreed@asu.edu. ; Institute of Human Origins, School of Human Evolution and Social Change, Arizona State University, Tempe, AZ 85287, USA. ; CNRS Geosciences Rennes, Campus de Beaulieu, 35042 Rennes, France. ; Berkeley Geochronology Center, 2455 Ridge Road, Berkeley, CA 94709, USA. ; Museum fur Naturkunde, Leibniz Institute for Evolution and Biodiversity Science, Invalidenstrasse 43, 10115 Berlin, Germany. ; Biology Program, Stockton University, 101 Vera King Farris Drive, Galloway, NJ 08205, USA. ; Human Evolution Research Center, University of California, Berkeley, 3101 Valley Life Sciences Building, Berkeley, CA, 94720-3160, USA. ; School of Earth and Space Exploration, Arizona State University, Tempe, AZ 85287, USA. ; Swedish Museum of Natural History, Department of Palaeobiology, Box 50007, SE-10405 Stockholm, Sweden.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25739409" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Biological Evolution ; *Ecosystem ; Ethiopia ; Fossils ; *Geologic Sediments ; *Hominidae
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 8
    Publication Date: 2015-06-20
    Description: Hawks et al. argue that our analysis of Australopithecus sediba mandibles is flawed and that specimen LD 350-1 cannot be distinguished from this, or any other, Australopithecus species. Our reexamination of the evidence confirms that LD 350-1 falls outside of the pattern that A. sediba shares with Australopithecus and thus is reasonably assigned to the genus Homo.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Villmoare, Brian -- Kimbel, William H -- Seyoum, Chalachew -- Campisano, Christopher J -- DiMaggio, Erin -- Rowan, John -- Braun, David R -- Arrowsmith, J Ramon -- Reed, Kaye E -- New York, N.Y. -- Science. 2015 Jun 19;348(6241):1326. doi: 10.1126/science.aab1122.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Anthropology, University of Nevada Las Vegas, Las Vegas, NV, 89154, USA. Center for the Advanced Study of Hominin Paleobiology, George Washington University, Washington, DC 20052, USA. Department of Anthropology, University College London, London WC1H 0BW, UK. brian.villmoare@unlv.edu wkimbel.iho@asu.edu. ; School of Human Evolution and Social Change and Institute of Human Origins, Arizona State University, Tempe, AZ 85287, USA. brian.villmoare@unlv.edu wkimbel.iho@asu.edu. ; School of Human Evolution and Social Change and Institute of Human Origins, Arizona State University, Tempe, AZ 85287, USA. Authority for Research and Conservation of Cultural Heritage, Addis Ababa, Ethiopia. ; School of Human Evolution and Social Change and Institute of Human Origins, Arizona State University, Tempe, AZ 85287, USA. ; Department of Geosciences, Pennsylvania State University, University Park, PA 16802, USA. ; Center for the Advanced Study of Hominin Paleobiology, George Washington University, Washington, DC 20052, USA. ; School of Earth and Space Exploration, Arizona State University, Tempe, AZ 85281, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26089506" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Biological Evolution ; Hominidae/*anatomy & histology ; Humans
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 9
    Publication Date: 2015-03-06
    Description: Our understanding of the origin of the genus Homo has been hampered by a limited fossil record in eastern Africa between 2.0 and 3.0 million years ago (Ma). Here we report the discovery of a partial hominin mandible with teeth from the Ledi-Geraru research area, Afar Regional State, Ethiopia, that establishes the presence of Homo at 2.80 to 2.75 Ma. This specimen combines primitive traits seen in early Australopithecus with derived morphology observed in later Homo, confirming that dentognathic departures from the australopith pattern occurred early in the Homo lineage. The Ledi-Geraru discovery has implications for hypotheses about the timing and place of origin of the genus Homo.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Villmoare, Brian -- Kimbel, William H -- Seyoum, Chalachew -- Campisano, Christopher J -- DiMaggio, Erin N -- Rowan, John -- Braun, David R -- Arrowsmith, J Ramon -- Reed, Kaye E -- New York, N.Y. -- Science. 2015 Mar 20;347(6228):1352-5. doi: 10.1126/science.aaa1343. Epub 2015 Mar 4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Anthropology, University of Nevada Las Vegas, Las Vegas, NV 89154, USA. Center for the Advanced Study of Hominin Paleobiology, George Washington University, Washington, DC 20052, USA. Department of Anthropology, University College London, London WC1H 0BW, UK. brian.villmoare@unlv.edu wkimbel.iho@asu.edu. ; Institute of Human Origins and School of Human Evolution and Social Change, Arizona State University, Tempe, AZ 85287, USA. brian.villmoare@unlv.edu wkimbel.iho@asu.edu. ; Institute of Human Origins and School of Human Evolution and Social Change, Arizona State University, Tempe, AZ 85287, USA. Authority for Research and Conservation of Cultural Heritage, Addis Ababa, Ethiopia. ; Institute of Human Origins and School of Human Evolution and Social Change, Arizona State University, Tempe, AZ 85287, USA. ; Department of Geosciences, Pennsylvania State University, University Park, PA 16802, USA. ; Center for the Advanced Study of Hominin Paleobiology, George Washington University, Washington, DC 20052, USA. ; School of Earth and Space Exploration, Arizona State University, Tempe, AZ 85281, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25739410" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Biological Evolution ; Ethiopia ; Fossils ; Hominidae/*anatomy & histology ; Humans ; Mandible/anatomy & histology ; Tooth/anatomy & histology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 10
    Publication Date: 2016-11-09
    Description: In areas where regional tectonic strain is accommodated by broad zones of short and low slip-rate faults, geomorphic and paleoseismic characterization of faults is difficult because of poor surface expression and long earthquake recurrence intervals. In humid areas, faults can be buried by thick sediments or soils; their geomorphic expression subdued and sometimes undetectable until the next earthquake. In Java, active faults are diffused and their characterization is challenging. Among them is the ENE-striking Cimandiri fault zone. Cumulative displacement produces prominent ENE-oriented ranges with the southeast side moving relatively upward and to the northeast. The fault zone is expressed in the bedrock by numerous NE, W and NW-trending thrust- and strike-slip faults and folds. However, it is unclear which of these structures are active. We performed a morphometric analysis of the fault zone using 30-m resolution Shuttle Radar Topography Mission Digital Elevation Model (SRTM-DEM). We constructed longitudinal profiles of 601 bedrock rivers along the up-thrown ranges along the fault zone, calculated the normalized channel steepness index (k sn ), identified knickpoints and use their distribution to infer relative magnitudes of rock uplift and locate boundaries that may indicate active fault traces. We compare the rock uplift distribution to surface displacement predicted by elastic dislocation model to determine the plausible fault kinematics. The active Cimandiri fault zone consists of six segments with predominant sense of reverse motion. This geometric characterization implies a maximum earthquake magnitude along its 100 km length of M7.3, but its geometric complexity suggests greater segmentation and smaller events.\
    Print ISSN: 0148-0227
    Topics: Geosciences , Physics
    Published by Wiley on behalf of American Geophysical Union (AGU).
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