Channel widths, landslides, faults, and beyond: The new world order of high-spatial resolution Googl

Author(s): Fisher, GB; Amos, CB; Bookhagen, B; Burbank, DW; Godard, V | Abstract: The past decade has seen a rapid increase in the application of high-resolution imagery and geographic-based information systems across every segment of society from security intelligence to product marketing to scientific research. Google Earth has positioned itself at the forefront of this spatial information wave by providing free access to high-resolution imagery through a simple, user-friendly interface. Whereas Google Earth imagery has been widely exploited across the earth sciences for spatial visualization, education, and place-based searches, few studies have utilized the highresolution imagery to yield quantitative insights about the processes and mechanisms acting at the earth's surface. In this paper, we detail the benefits of the underlying high-resolution imagery available within Google Earth, review the limited published research to date, and utilize this imagery to quantitatively illuminate previously difficult and unresolved questions within the discipline of geomorphology involving: (1) channel-width variability and scaling relations in the tectonically active Himalaya; (2) landslide characteristics related to large magnitude climatic and tectonic events in Haiti; and (3) identification and quantification of laterally offset geomorphic features within eastern California. In each example, we compare analyses using freely available Google Earth imagery with standard imagery and techniques (e.g., Landsat, ASTER, lidar) to demonstrate the potential benefits of using high-spatial resolution Google Earth imagery over established methodologies. In addition, we discuss the potential limitations and problems with using the imagery currently available in Google Earth and propose favorable future applications, namely studies in remote terrains and those requiring high-resolution imagery across a large spatial extent, where purchasing such imagery in an academic environment would be costprohibitive. Whether as a supplement, for reconnaissance, or as the primary data set, high-resolution Google Earth imagery, when properly applied, holds great promise for quantitatively tackling previously unresolved problems in the study of earth surface processes. © 2012 The Geological Society of America. All rights reserved.

[1]  B. Clarke,et al.  Quantifying bedrock-fracture patterns within the shallow subsurface: Implications for rock mass strength, bedrock landslides, and erodibility , 2011 .

[2]  K. Whipple BEDROCK RIVERS AND THE GEOMORPHOLOGY OF ACTIVE OROGENS , 2004 .

[3]  D. Lague,et al.  Response of bedrock channel width to tectonic forcing: Insights from a numerical model, theoretical considerations, and comparison with field data , 2009 .

[4]  Yang Hong,et al.  Evaluation of the potential of NASA multi‐satellite precipitation analysis in global landslide hazard assessment , 2006 .

[5]  Paul A. Rosen,et al.  Transient strain accumulation and fault interaction in the eastern California shear zone , 2001 .

[6]  V. Gornitz,et al.  River profiles along the Himalayan arc as indicators of active tectonics , 1983 .

[7]  David R. Montgomery,et al.  Tibetan plateau river incision inhibited by glacial stabilization of the Tsangpo gorge , 2008, Nature.

[8]  B. Bookhagen,et al.  Abnormal monsoon years and their control on erosion and sediment flux in the high, arid northwest Himalaya , 2005 .

[9]  Declan Butler,et al.  Virtual globes: The web-wide world , 2006, Nature.

[10]  Y. Klinger,et al.  Characteristic slip for five great earthquakes along the Fuyun fault in China , 2011 .

[11]  J W Head,et al.  Possible ancient oceans on Mars: evidence from Mars Orbiter Laser Altimeter data. , 1999, Science.

[12]  E. Foufoula‐Georgiou,et al.  A nonlocal theory of sediment buffering and bedrock channel evolution , 2008 .

[13]  D. Burbank,et al.  Channel width response to differential uplift , 2007 .

[14]  B. Clarke,et al.  Bedrock fracturing, threshold hillslopes, and limits to the magnitude of bedrock landslides , 2010 .

[15]  D. Montgomery,et al.  Coupling of rock uplift and river incision in the Namche Barwa–Gyala Peri massif, Tibet , 2008 .

[16]  M. Wolman,et al.  Magnitude and Frequency of Forces in Geomorphic Processes , 1960, The Journal of Geology.

[17]  Michael Oskin,et al.  Large-magnitude transient strain accumulation on the Blackwater fault, Eastern California shear zone , 2004 .

[18]  David T. Potere,et al.  Horizontal Positional Accuracy of Google Earth's High-Resolution Imagery Archive , 2008, Sensors.

[19]  Paul Mann,et al.  Complex rupture during the 12 January 2010 Haiti earthquake , 2010 .

[20]  K. Kelson,et al.  Map of the late Quaternary active Kern Canyon and Breckenridge faults, southern Sierra Nevada, California , 2012 .

[21]  Douglas W. Burbank,et al.  Towards a complete Himalayan hydrologic budget : The spatiotemporal distribution of snowmelt and rainfall and their impact on river discharge , 2010 .

[22]  E. Kirby,et al.  Tectonic geomorphology along the eastern margin of Tibet: insights into the pattern and processes of active deformation adjacent to the Sichuan Basin , 2011 .

[23]  N. Hovius,et al.  Topographic site effects and the location of earthquake induced landslides , 2008 .

[24]  D. Paor,et al.  The digital revolution in geologic mapping , 2010 .

[25]  J. Humphrey,et al.  Transtensional model for the Sierra Nevada frontal fault system, eastern California , 2003 .

[26]  J. Pierce,et al.  Fire-induced erosion and millennial-scale climate change in northern ponderosa pine forests , 2004, Nature.

[27]  Erika Upegui,et al.  Retrieving urban areas on Google Earth images: application to towns of West Africa , 2010 .

[28]  R. Cattin,et al.  Spatial distribution of denudation in Eastern Tibet and regressive erosion of plateau margins , 2010 .

[29]  Sean C. Solomon,et al.  Geodetic slip rate for the eastern California shear zone and the recurrence time of Mojave desert earthquakes , 1994, Nature.

[30]  B. Pratt-Sitaula,et al.  Rainfall thresholds for landsliding in the Himalayas of Nepal , 2004 .

[31]  B. Bookhagen,et al.  Erosional variability along the northwest Himalaya , 2009 .

[32]  Brandon J. Weihs,et al.  Geomorphology of the lake shewa landslide dam, badakhshan, afghanistan, using remote sensing data , 2010 .

[33]  G. Asner,et al.  Comparison of gully erosion estimates using airborne and ground-based LiDAR on Santa Cruz Island, California , 2010 .

[34]  Steven N. Bacon,et al.  A 25,000-year record of earthquakes on the Owens Valley fault near Lone Pine, California: Implications for recurrence intervals, slip rates, and segmentation models , 2007 .

[35]  J. Shulmeister,et al.  Evidence for a landslide origin of New Zealand’s Waiho Loop moraine , 2008 .

[36]  Nicholas Brozovic,et al.  Bedrock incision, rock uplift and threshold hillslopes in the northwestern Himalayas , 1996, Nature.

[37]  Jérôme Lavé,et al.  Fluvial incision and tectonic uplift across the Himalayas of central Nepal , 2001 .

[38]  B. Hynek,et al.  Ancient ocean on Mars supported by global distribution of deltas and valleys , 2010 .

[39]  Sean C. Solomon,et al.  A new look at the planet Mercury , 2011 .

[40]  P. Kubik,et al.  Deglaciation and landscape history around Annapurna, Nepal, based on 10Be surface exposure dating , 2009 .

[41]  A. Sobel,et al.  Tropical cyclone triggering of sediment discharge in Taiwan , 2006 .

[42]  B. Bookhagen,et al.  Hillslope‐glacier coupling: The interplay of topography and glacial dynamics in High Asia , 2011 .

[43]  N. Hovius,et al.  Supply and Removal of Sediment in a Landslide‐Dominated Mountain Belt: Central Range, Taiwan , 2000, The Journal of Geology.

[44]  James A. Slater,et al.  Global Assessment of the New ASTER Global Digital Elevation Model , 2011 .

[45]  G. Tucker,et al.  Incision and channel morphology across active structures along the Peikang River, central Taiwan: Implications for the importance of channel width , 2010 .

[46]  Michael Oskin,et al.  Elevated shear zone loading rate during an earthquake cluster in eastern California , 2008 .

[47]  B. Bookhagen,et al.  Spatially variable response of Himalayan glaciers to climate change affected by debris cover , 2011 .

[48]  E. Kirby,et al.  Tectonic and lithologic controls on bedrock channel profiles and processes in coastal California , 2004 .

[49]  J. Parker,et al.  Using Google Earth to Teach the Magnitude of Deep Time. , 2011 .

[50]  D. Burbank,et al.  Denudation processes and rates in the Transverse Ranges, southern California: Erosional response of a transitional landscape to external and anthropogenic forcing , 2004 .

[51]  E. Wohl,et al.  Consistency of scaling relations among bedrock and alluvial channels , 2008 .

[52]  Peng Gong,et al.  Removing shadows from Google Earth images , 2010 .

[53]  O. Korup,et al.  The role of landslides in mountain range evolution. , 2010 .

[54]  Sang-Hoon Hong,et al.  Transpressional rupture of an unmapped fault during the 2010 Haiti earthquake , 2010 .

[55]  J. Roering,et al.  Fire and the evolution of steep, soil-mantled landscapes , 2005 .

[56]  N. Hovius,et al.  The characterization of landslide size distributions , 2001 .

[57]  T. Pavelsky,et al.  Estimation of river discharge, propagation speed, and hydraulic geometry from space: Lena River, Siberia , 2008 .

[58]  E. Harp,et al.  Interpretation of earthquake-induced landslides triggered by the 12 May 2008, M7.9 Wenchuan earthquake in the Beichuan area, Sichuan Province, China using satellite imagery and Google Earth , 2009 .

[59]  Frank Winde,et al.  Generating high-resolution digital elevation models for wetland research using Google EarthTM imagery - an example from South Africa. , 2010 .

[60]  B. Bookhagen,et al.  Bedrock channel geometry along an orographic rainfall gradient in the upper Marsyandi River valley in central Nepal , 2007 .

[61]  Daniel A. Contreras Huaqueros and remote sensing imagery: assessing looting damage in the Virú Valley, Peru , 2010, Antiquity.

[62]  T. Dunne,et al.  Meander cutoff and the controls on the production of oxbow lakes , 2008 .

[63]  R. DeFries,et al.  A Contemporary Assessment of Change in Humid Tropical Forests , 2009, Conservation biology : the journal of the Society for Conservation Biology.

[64]  J. Milliman,et al.  Earthquake-triggered increase in sediment delivery from an active mountain belt , 2004 .

[65]  Gregory E. Tucker,et al.  Bedrock channel adjustment to tectonic forcing: Implications for predicting river incision rates , 2007 .

[66]  F. Phillips,et al.  The role of low-angle normal faulting in active tectonics of the northern Owens Valley, California , 2011 .

[67]  Y. Hong,et al.  The TRMM Multisatellite Precipitation Analysis (TMPA): Quasi-Global, Multiyear, Combined-Sensor Precipitation Estimates at Fine Scales , 2007 .

[68]  J. Pelletier,et al.  Evolution of the Bonneville shoreline scarp in west-central Utah: Comparison of scarp-analysis methods and implications for the diffusion model of hillslope evolution , 2006 .

[69]  Jonathan C. Lewis,et al.  Seismotectonics of the Coso Range–Indian Wells Valley region, California: Transtensional deformation along the southeastern margin of the Sierran microplate , 2002 .

[70]  M. Hashimoto,et al.  Fan-delta uplift and mountain subsidence during the Haiti 2010 earthquake , 2011 .

[71]  J. Červený,et al.  Magnetic alignment in grazing and resting cattle and deer , 2008, Proceedings of the National Academy of Sciences.

[72]  L. Sklar,et al.  Interplay of sediment supply, river incision, and channel morphology revealed by the transient evolution of an experimental bedrock channel , 2007 .

[73]  Bodo Bookhagen,et al.  Appearance of extreme monsoonal rainfall events and their impact on erosion in the Himalaya , 2010 .

[74]  F. Magilligan,et al.  Constraining the timescales of sediment sequestration associated with large woody debris using cosmogenic 7Be , 2010 .

[75]  R. Finkel,et al.  Spatial and temporal constancy of seismic strain release along an evolving segment of the Pacific-North America plate boundary , 2011 .

[76]  L. B. Leopold,et al.  The hydraulic geometry of stream channels and some physiographic implications , 1953 .

[77]  G. Tucker,et al.  Dynamics of the stream‐power river incision model: Implications for height limits of mountain ranges, landscape response timescales, and research needs , 1999 .

[78]  N. Snyder,et al.  Tectonics from topography: Procedures, promise, and pitfalls , 2006 .

[79]  Meghan S. Miller,et al.  Present‐day motion of the Sierra Nevada block and some tectonic implications for the Basin and Range province, North American Cordillera , 2000 .

[80]  G. Tucker,et al.  Controls and limits on bedrock channel geometry , 2010 .

[81]  J. Syvitski,et al.  Geomorphic/Tectonic Control of Sediment Discharge to the Ocean: The Importance of Small Mountainous Rivers , 1992, The Journal of Geology.

[82]  Eike Luedeling,et al.  Spatial expansion and water requirements of urban agriculture in Khartoum, Sudan , 2009 .

[83]  David R. Montgomery,et al.  Geologic constraints on bedrock river incision using the stream power law , 1999 .

[84]  Yong Li,et al.  Mass wasting triggered by the 2008 Wenchuan earthquake is greater than orogenic growth , 2011 .