A5076625045- Geology and Paleoclimatology Research
- earthquake and tectonic studies
- Hydrology and Sediment Transport Processes
- Landslides and related hazards
- Hydrology and Watershed Management Studies
- Geological formations and processes
- Geological and Geochemical Analysis
- Flood Risk Assessment and Management
- Archaeology and Natural History
- Geological and Tectonic Studies in Latin America
- Soil erosion and sediment transport
- Tree-ring climate responses
- Seismology and Earthquake Studies
- Geological and Geophysical Studies Worldwide
- Climate variability and models
- Archaeology and ancient environmental studies
- Earthquake Detection and Analysis
- Geological Studies and Exploration
- Career Development and Diversity
- Groundwater flow and contamination studies
- Cryospheric studies and observations
- Hydrocarbon exploration and reservoir analysis
- Water Quality and Resources Studies
- Maritime and Coastal Archaeology
- Urban Stormwater Management Solutions
Central Washington University
2014-2024
University of Arizona
1985-1995
Pennsylvania State University
1993-1994
Sediments from Lunkaransar dry lake in northwestern India reveal regional water table and level fluctuations over decades to centuries during the Holocene that are attributed changes southwestern Indian monsoon rains. The levels were very shallow fluctuated often early then rose abruptly around 6300 carbon-14 years before present (14C yr B.P.). completely desiccated 4800 (14)C B.P. end of this 1500-year wet period coincided with a intense dune destabilization. major Harrapan-Indus...
A 5000-year regional paleoflood chronology, based on flood deposits from 19 rivers in Arizona and Utah, reveals that the largest floods region cluster into distinct time intervals coincide with periods of cool, moist climate frequent El Niño events. The were most numerous 4800 to 3600 years before present (B.P.), around 1000 B.P., after 500 but decreased markedly 2200 800 600 B.P. Analogous modern are associated a specific set anomalous atmospheric circulation conditions probably more...
A sequence of flood deposits left by the Colorado River in Grand Canyon, Arizona, provides evidence at least 15 floods with peak discharges greater than $$5500 m^{3}sec^{-1}$$ over last 4500 yr. Ten during 2000-2300 yr had $$6800 m^{3}sec^{-1}$$. One flood, 1600-1200 ago, a discharge exceeding $$14,000 m^{3}sec{-1}$$, flow rate more twice largest gaged flood. This record flooding is one longest for major U.S. river, and, combined twentieth century floods, allows determination frequency and...
Fine-grained slackwater flood deposits provide a key to the paleoflood history of Verde River in central Arizona. During large flows, accumulate areas sharply reduced flow velocity at channel expansions and contractions or back-flooded tributaries. The upper surfaces highest approximate peak stages associated floods. Stratigraphic analysis, radiocarbon archaeological dating, correlation between slack-water sites along study reach revealed multiple floods, including two paleo-floods that...
The existence of an upper limit to the magnitude floods in a region is long‐standing and controversial hypothesis flood hydrology. Regional envelope curves encompassing maximum magnitudes stabilize with progressive increases areal coverage period observation (Wolman Costa, 1984). However, short lengths conventional gaging records substantial advances testing whether this stabilization evidence limit. In Colorado River basin there are 32,120 station years gage data, but average at only 20...
Research Article| November 01, 2014 Five centuries of tsunamis and land-level changes in the overlapping rupture area 1960 2010 Chilean earthquakes Lisa L. Ely; Ely 1Department Geological Sciences, Central Washington University, Ellensburg, 98926-7418, USA Search for other works by this author on: GSW Google Scholar Marco Cisternas; Cisternas 2Escuela de Ciencias del Mar, Pontificia Universidad Católica Valparaíso, 1020 Chile Robert Wesson; Wesson 3U.S. Survey, Denver, Colorado 80225-0046,...
Research Article| September 01, 1996 Changes in the magnitude and frequency of late Holocene monsoon floods on Narmada River, central India Lisa L. Ely; Ely 1Department Geology, Central Washington University, Ellensburg, 98926 Search for other works by this author on: GSW Google Scholar Yehouda Enzel; Enzel 2Institute Earth Sciences, Hebrew Jerusalem 91904, Israel Victor R. Baker; Baker 3Department Geosciences, University Arizona, Tucson, Arizona 85721 Vishwas S. Kale; Kale 4Department...
Specific anomalous atmospheric circulation conditions over the North Pacific are conducive to occurrence of largest winter floods (≥10-yr return period) on rivers in six hydroclimatic subregions Arizona and southern Utah, Nevada, California. Composite maps anomalies daily 700-mb heights indicate that all associated with a low pressure anomaly off California coast high-pressure vicinity either Alaska or Aleutian Islands. Of these two major features, presence is controlling factor determining...
The accuracy and precision of 137Cs 14C for dating post-1950 alluvial deposits were evaluated from known floods on two rivers in Arizona. presence reliably indicates that deposition occurred after intensive above-ground nuclear testing was initiated around 1950. There a positive correlation between the measured level activity clay content sediments, although detected even sandy flood sediments with low content. is valuable tool arid environments where organic materials or tree-ring are...
Research Article| November 01, 2012 Owyhee River intracanyon lava flows: Does the river give a dam? Lisa L. Ely; Ely † 1Department of Geological Sciences, Central Washington University, Ellensburg, 98926, USA †E-mail: ely@cwu.edu Search for other works by this author on: GSW Google Scholar Cooper C. Brossy; Brossy §Present addresses: Brossy—Fugro Consultants, Inc., 1777 Botelho Drive, Suite 262, Walnut Creek, California 94546, USA. Bondre—International Geosphere-Biosphere Programme, The...
Research Article| September 01, 2011 Controls on large landslide distribution and implications for the geomorphic evolution of southern interior Columbia River basin Elizabeth B. Safran; Safran * 1Environmental Studies Program, Lewis & Clark College, Portland, Oregon 97219, USA *E-mail: safran@lclark.edu Search other works by this author on: GSW Google Scholar Scott W. Anderson; Anderson † 2Physics Department, †Current address: Department Geography, University Colorado at Boulder, 80309,...
Research Article| November 07, 2017 Exploring the Historical Earthquakes Preceding Giant 1960 Chile Earthquake in a Time‐Dependent Seismogenic Zone M. Cisternas; Cisternas aEscuela de Ciencias del Mar, Pontificia Universidad Católica Valparaíso, Avenue Altamirano 1480, Valparaiso, Chile, marco.cisternas@pucv.cl, matias.carvajal.ramirez@gmail.com, nga2043@gmail.com Search for other works by this author on: GSW Google Scholar Carvajal; Carvajal R. Wesson; Wesson bU.S. Geological Survey, Denver...
The stratigraphy within coastal river valleys in south-central Chile clarifies and extends the region’s history of large, earthquakes accompanying tsunamis. Our site at Quidico (38.1°S, 73.3°W) is located an overlap zone between ruptures magnitude 8–9 1960 2010, and, therefore, records tsunamis originating from subduction-zone north south city Concepción. Hand-dug pits cores a 3-m-thick sequence freshwater peat abandoned meander (a little-examined depositional environment for tsunami...
Abstract The 1300 km long Narmada River flows along a structural lineament, alternating between constricting rocky gorges and rapids, meandering wide alluvial reaches. Channel forms processes were studied in 120 section of an reach. size, shape bedforms the are related to very large floods which have occurred three times this century. During such entire 400 m channel is utilized 10–15 high cliffs on both sides operate as riverbanks. Normally, even south‐western monsoon insufficient fill...