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Articles 31 - 60 of 575
Full-Text Articles in Physical Sciences and Mathematics
Reconnaissance Surveying Of Bechevin Bay, Ak Using Satellite-Derived Bathymetry, Shachak Pe'eri, Patrick Keown, Leland P. Snyder, Michael Gonsalves, John Nyberg
Reconnaissance Surveying Of Bechevin Bay, Ak Using Satellite-Derived Bathymetry, Shachak Pe'eri, Patrick Keown, Leland P. Snyder, Michael Gonsalves, John Nyberg
Center for Coastal and Ocean Mapping
Recently, a remote sensing study has been conducted over Bechevin Bay Channel, Alaska as part of a collaboration project between NOAA and the U.S. Coast Guard (USCG). The goal of the study to develop a procedure to prioritize survey areas and plan the annual deployment of Aids to Navigation (AtoN) along the channel. Bechevin Bay is considered a priority for marine surveying because it constitutes the easternmost passage through the Aleutians from the Bering Sea to the Gulf of Alaska. The channel is located in a mud flat area, where every winter the passage is closed due to ice cover. …
Multibeam Mapping Of Feature Rich Seafloor In The U.S. Pacific Remote Islands Marine National Monument And On Mendocino Ridge Off The California Coast, Andy Armstrong, James V. Gardner, Brian R. Calder, Giuseppe Masetti
Multibeam Mapping Of Feature Rich Seafloor In The U.S. Pacific Remote Islands Marine National Monument And On Mendocino Ridge Off The California Coast, Andy Armstrong, James V. Gardner, Brian R. Calder, Giuseppe Masetti
Center for Coastal and Ocean Mapping
No abstract provided.
S-100 Overlays: A Brave New World?, Lee Alexander, C. Mcleay
S-100 Overlays: A Brave New World?, Lee Alexander, C. Mcleay
Center for Coastal and Ocean Mapping
Marine Information Overlay (MIO) is a generic term used to describe chart and navigation related information that supplement the content that is already contained in an ENC. This includes both static and dynamic information such as tide/water level, current flow, meteorological, oceanographic, and environmental protection. With the advent of S-100 and S-101, there is increased interest in providing a wide variety of ‘new’ overlay information. This paper provides a brief history of S-57 MIOs. Examples of navigational and non-navigation MIOs are given in terms of how currently used, by who, and for what purpose. Recommendations are provided for making a …
Simulating Ice Core 10be On The Glacial–Interglacial Timescale, C Elsasser, D Wagenbach, I Levin, A Stanzick, Mark J. Christl, A Wallner, S Kipfstuhl, I K. Seietstad, H Wershofen, Jack E. Dibb
Simulating Ice Core 10be On The Glacial–Interglacial Timescale, C Elsasser, D Wagenbach, I Levin, A Stanzick, Mark J. Christl, A Wallner, S Kipfstuhl, I K. Seietstad, H Wershofen, Jack E. Dibb
Earth Sciences
10Be ice core measurements are an important tool for paleoclimate research, e.g., allowing for the reconstruction of past solar activity or changes in the geomagnetic dipole field. However, especially on multi-millennial timescales, the share of production and climate-induced variations of respective 10Be ice core records is still up for debate. Here we present the first quantitative climatological model of the 10Be ice concentration up to the glacial–interglacial timescale. The model approach is composed of (i) a coarse resolution global atmospheric transport model and (ii) a local 10Be air–firn transfer model. Extensive global-scale observational data of short-lived …
Euclidean Reconstruction Of Natural Underwater Scenes Using Optic Imagery Sequence, Han Hu
Euclidean Reconstruction Of Natural Underwater Scenes Using Optic Imagery Sequence, Han Hu
Center for Coastal and Ocean Mapping
The development of maritime applications require monitoring, studying and preserving of detailed and close observation on the underwater seafloor and objects. Stereo vision offers advanced technologies to build 3D models from 2D still overlapping images in a relatively inexpensive way. However, while image stereo matching is a necessary step in 3D reconstruction procedure, even the most robust dense matching techniques are not guaranteed to work for underwater images due to the challenging aquatic environment. In this thesis, in addition to a detailed introduction and research on the key components of building 3D models from optic images, a robust modified quasi-dense …
Arctic Ocean Bathymetry: A Necessary Geospatial Framework, Martin Jakobsson, Larry A. Mayer, Dave Monahan
Arctic Ocean Bathymetry: A Necessary Geospatial Framework, Martin Jakobsson, Larry A. Mayer, Dave Monahan
Center for Coastal and Ocean Mapping
Most ocean science relies on a geospatial infrastructure that is built from bathymetry data collected from ships underway, archived, and converted into maps and digital grids. Bathymetry, the depth of the seafloor, besides having vital importance to geology and navigation, is a fundamental element in studies of deep water circulation, tides, tsunami forecasting, upwelling, fishing resources, wave action, sediment transport, environmental change, and slope stability, as well as in site selection for platforms, cables, and pipelines, waste disposal, and mineral extraction. Recent developments in multibeam sonar mapping have so dramatically increased the resolution with which the seafloor can be portrayed …
Arctic Air Pollution: New Insights From Polarcat-Ipy, Katherine S. Law, Andreas Stohl, Patricia K. Quinn, Charles A. Brock, John F. Burkhart, Jean-Daniel Paris, Gerard Ancellet, Hanwant B. Singh, Anke Roiger, Hans Schlager, Jack E. Dibb, Daniel J. Jacob, S R. Arnold, Jacques Pelon, Jennie L. Thomas
Arctic Air Pollution: New Insights From Polarcat-Ipy, Katherine S. Law, Andreas Stohl, Patricia K. Quinn, Charles A. Brock, John F. Burkhart, Jean-Daniel Paris, Gerard Ancellet, Hanwant B. Singh, Anke Roiger, Hans Schlager, Jack E. Dibb, Daniel J. Jacob, S R. Arnold, Jacques Pelon, Jennie L. Thomas
Earth Sciences
Given the rapid nature of climate change occurring in the Arctic and the difficulty climate models have in quantitatively reproducing observed changes such as sea ice loss, it is important to improve understanding of the processes leading to climate change in this region, including the role of short-lived climate pollutants such as aerosols and ozone. It has long been known that pollution produced from emissions at midlatitudes can be transported to the Arctic, resulting in a winter/spring aerosol maximum known as Arctic haze. However, many uncertainties remain about the composition and origin of Arctic pollution throughout the troposphere; for example, …
Nippon Foundation / Gebco Indian Ocean Bathymetric Compilation Project, Rochelle A. Wigley, Norhizam Hassan, Mohammad Chowdhury, Roshan Ranaweera, Xinh Le Sy, Hemanaden Runghen, Jan Erik Arndt
Nippon Foundation / Gebco Indian Ocean Bathymetric Compilation Project, Rochelle A. Wigley, Norhizam Hassan, Mohammad Chowdhury, Roshan Ranaweera, Xinh Le Sy, Hemanaden Runghen, Jan Erik Arndt
Center for Coastal and Ocean Mapping
The Indian Ocean Bathymetric Compilation (IOBC) project, undertaken by Nippon Foundation / GEBCO Scholars, is focused on building a regional bathymetric data compilation, of all publically-available bathymetric data within the Indian Ocean region from 30°N to 60° S and 10° to 147° E. One of the objectives of this project is the creation of a network of Nippon Foundation / GEBCO Scholars working together, derived from the thirty Scholars from fourteen nations bordering on the Indian Ocean who have graduated from this Postgraduate Certificate in Ocean Bathymetry (PCOB) training program training program at the University of New Hampshire. The IOBC …
Nippon Foundation/Gebco Postgraduate Certificate In Ocean Bathymetry, Rochelle A. Wigley
Nippon Foundation/Gebco Postgraduate Certificate In Ocean Bathymetry, Rochelle A. Wigley
Center for Coastal and Ocean Mapping
No abstract provided.
R/V Sikuliaq Em302 And Em710 Multibeam Echosounder System Shipboard Acceptance Tests - Skq201400l3, Paul Johnson, Ashton F. Flinders, Samuel F. Greenaway
R/V Sikuliaq Em302 And Em710 Multibeam Echosounder System Shipboard Acceptance Tests - Skq201400l3, Paul Johnson, Ashton F. Flinders, Samuel F. Greenaway
Center for Coastal and Ocean Mapping
No abstract provided.
U.S. Extended Continental Shelf Cruise To Map Gaps In Kela And Karin Ridges, Johnston Atoll, Equatorial Pacific Ocean, James V. Gardner, Andy Armstrong
U.S. Extended Continental Shelf Cruise To Map Gaps In Kela And Karin Ridges, Johnston Atoll, Equatorial Pacific Ocean, James V. Gardner, Andy Armstrong
Center for Coastal and Ocean Mapping
The objectives for cruise KM14-17 are to map the bathymetry of two gaps in two submarine ridges in the vicinity of Johnston Atoll. One ridge gap occurs along the informally named Keli Ridge (Hein et al., 2005) south of Johnston Atoll and the other ridge gap occurs north of Johnston Atoll that separates Sculpin Ridge (also informally called Karin Ridge) and Horizon Ridge, all in the central equatorial Pacific (Fig. 1). The cruise took advantage of a scheduled dead-head transit from Papeete, Tahiti to Honolulu, Hawai’i that could be extended for 5 days to include the planned mapping. The mapping …
Assessing Effects Of Permafrost Thaw On C Fluxes Based On Multiyear Modeling Across A Permafrost Thaw Gradient At Stordalen, Sweden, Jia Deng, C Li, Steve Frolking, Y Zhang, K Backstrand, P Crill
Assessing Effects Of Permafrost Thaw On C Fluxes Based On Multiyear Modeling Across A Permafrost Thaw Gradient At Stordalen, Sweden, Jia Deng, C Li, Steve Frolking, Y Zhang, K Backstrand, P Crill
Earth Sciences
Northern peatlands in permafrost regions contain a large amount of organic carbon (C) in the soil. Climate warming and associated permafrost degradation are expected to have significant impacts on the C balance of these ecosystems, but the magnitude is uncertain. We incorporated a permafrost model, Northern Ecosystem Soil Temperature (NEST), into a biogeochemical model, DeNitrificationDeComposition (DNDC), to model C dynamics in highlatitude peatland ecosystems. The enhanced model was applied to assess effects of permafrost thaw on C fluxes of a subarctic peatland at Stordalen, Sweden. DNDC simulated soil freeze–thaw dynamics, net ecosystem exchange of CO2 (NEE), and CH4 fluxes across …
Atmospheric Oxidation Chemistry And Ozone Production: Results From Sharp 2009 In Houston, Texas, Katherine A. Duderstadt, Jack E. Dibb, Charles H. Jackman, Cora E. Randall, Stanley C. Solomon, Michael J. Mills, Nathan A. Schwadron, Harlan E. Spence
Atmospheric Oxidation Chemistry And Ozone Production: Results From Sharp 2009 In Houston, Texas, Katherine A. Duderstadt, Jack E. Dibb, Charles H. Jackman, Cora E. Randall, Stanley C. Solomon, Michael J. Mills, Nathan A. Schwadron, Harlan E. Spence
Earth Sciences
This study considers whether spikes in nitrate in snow sampled at Summit, Greenland, from August 2000 to August 2002 are related to solar proton events. After identifying tropospheric sources of nitrate on the basis of correlations with sulfate, ammonium, sodium, and calcium, we use the three-dimensional global Whole Atmosphere Community Climate Model (WACCM) to examine unaccounted for nitrate spikes. Model calculations confirm that solar proton events significantly impact HOx, NOx, and O3 levels in the mesosphere and stratosphere during the weeks and months following the major 9 November 2000 solar proton event. However, solar proton event (SPE)-enhanced NOy calculated within …
Enhanced Coastal Mapping Using Lidar Waveform Features, Christopher Parrish, Jeffrey A. Rogers, Larry G. Ward, Jennifer A. Dijkstra
Enhanced Coastal Mapping Using Lidar Waveform Features, Christopher Parrish, Jeffrey A. Rogers, Larry G. Ward, Jennifer A. Dijkstra
Center for Coastal and Ocean Mapping
No abstract provided.
Intercomparison Of Field Measurements Of Nitrous Acid (Hono) During The Sharp Campaign, J R. Pinto, Jack E. Dibb, B H. Lee, B Rappengluck, E C. Wood, M Levy, R Y. Zhang, Barry Lefer, Xinrong Ren, J Stutz, C Tsai, L Ackermann, J Golovko, S C. Herndon, M Oakes, Q Y. Meng, J W. Munger, M Zahniser, J Zheng
Intercomparison Of Field Measurements Of Nitrous Acid (Hono) During The Sharp Campaign, J R. Pinto, Jack E. Dibb, B H. Lee, B Rappengluck, E C. Wood, M Levy, R Y. Zhang, Barry Lefer, Xinrong Ren, J Stutz, C Tsai, L Ackermann, J Golovko, S C. Herndon, M Oakes, Q Y. Meng, J W. Munger, M Zahniser, J Zheng
Earth Sciences
Because of the importance of HONO as a radical reservoir, consistent and accurate measurements of its concentration are needed. As part of SHARP (Study of Houston Atmospheric Radical Precursors), time series of HONO were obtained by six different measurement techniques on the roof of the Moody Tower at the University of Houston. Techniques used were long path differential optical absorption spectroscopy (DOAS), stripping coil-visible absorption photometry (SC-AP), long path absorption photometry (LOPAP® ), mist chamber/ion chromatography (MC-IC), quantum cascade-tunable infrared laser differential absorption spectroscopy (QC-TILDAS), and ion drift-chemical ionization mass spectrometry (ID-CIMS). Various combinations of techniques were in operation from …
Satellite-Derived Bathymetry Using Multiple Images: The Alaska North Slope Case Study, Shachak Pe'eri, Shep M. Smith Lt, Leland P. Snyder, Brian Madore
Satellite-Derived Bathymetry Using Multiple Images: The Alaska North Slope Case Study, Shachak Pe'eri, Shep M. Smith Lt, Leland P. Snyder, Brian Madore
Center for Coastal and Ocean Mapping
Currently, charting data in much of the U.S. Arctic North Slope is inadequate or nonexistent and most of its areas have not been updated since the early-1950s. Although the charting infrastructure is out of date, ship transportation (such as, fishing and transit between the towns) has increased. NOAA conducted a preliminary multibeam survey in 2013 that reached Point Barrow, AK. However, all the Arctic North Slope remained untouched. Previous studies have shown that satellite-derived bathymetry (SDB) is a useful reconnaissance tool in tropical and sub-tropical waters in clear water conditions, especially over sandy seafloor. However, it is very difficult to …
Brown Carbon In The Continental Troposphere, Jiumeng Liu, Eric Scheuer, Jack E. Dibb, Luke D. Ziemba, Kenn L. Thornhill, Bruce Anderson, Armin Wisthaler, Tomas Mikoviny, J J. Devi, Mike Bergin, Rodney J. Weber
Brown Carbon In The Continental Troposphere, Jiumeng Liu, Eric Scheuer, Jack E. Dibb, Luke D. Ziemba, Kenn L. Thornhill, Bruce Anderson, Armin Wisthaler, Tomas Mikoviny, J J. Devi, Mike Bergin, Rodney J. Weber
Earth Sciences
No abstract provided.
Mercury Speciation At A Coastal Site In The Northern Gulf Of Mexico: Results From The Grand Bay Intensive Studies In Summer 2010 And Spring 2011, Xinrong Ren, Winston T. Luke, Paul Kelley, Mark Cohen, Fong Ngan, Richard Artz, Jake Walker, Steve Brooks, Christopher Moore, Phil Swartzendruber, Dieter Bauer, James Remeika, Anthony Hynes, Jack E. Dibb, John Rolison, Nishanth Krishnamurthy, William M. Landing, Arsineh Hecobian, Jeffery Shook, L Gregory Huey
Mercury Speciation At A Coastal Site In The Northern Gulf Of Mexico: Results From The Grand Bay Intensive Studies In Summer 2010 And Spring 2011, Xinrong Ren, Winston T. Luke, Paul Kelley, Mark Cohen, Fong Ngan, Richard Artz, Jake Walker, Steve Brooks, Christopher Moore, Phil Swartzendruber, Dieter Bauer, James Remeika, Anthony Hynes, Jack E. Dibb, John Rolison, Nishanth Krishnamurthy, William M. Landing, Arsineh Hecobian, Jeffery Shook, L Gregory Huey
Earth Sciences
During two intensive studies in summer 2010 and spring 2011, measurements of mercury species including gaseous elemental mercury (GEM), gaseous oxidized mercury (GOM), and particulate-bound mercury (PBM), trace chemical species including O3, SO2, CO, NO, NOY, and black carbon, and meteorological parameters were made at an Atmospheric Mercury Network (AMNet) site at the Grand Bay National Estuarine Research Reserve (NERR) in Moss Point, Mississippi. Surface measurements indicate that the mean mercury concentrations were 1.42 ± 0.12 ng∙m−3 for GEM, 5.4 ± 10.2 pg∙m−3 for GOM, and 3.1 ± 1.9 pg∙m−3 for …
Climate Change In Northern New Hampshire: Past, Present And Future, Cameron P. Wake, C. Keeley, Elizabeth A. Burakowski, Peter Wilkinson, Katharine Hayhoe, Anne Stoner, Julie Labrance
Climate Change In Northern New Hampshire: Past, Present And Future, Cameron P. Wake, C. Keeley, Elizabeth A. Burakowski, Peter Wilkinson, Katharine Hayhoe, Anne Stoner, Julie Labrance
The Sustainability Institute Publications
EARTH’S CLIMATE CHANGES. It always has and always will. However, an extensive and growing body of scientific evidence indicates that human activities—including the burning of fossil fuel (coal, oil, and natural gas) for energy, clearing of forested lands for agriculture, and raising livestock—are now the primary force driving change in the Earth’s climate system. This report describes how the climate of northern New Hampshire has changed over the past century and how the future climate of the region will be affected by a warmer planet due to human activities.
Pose Detection And Control Of Multiple Unmanned Underwater Vehicles Using Optical Feedback, Firat Eren, Shachak Pe'eri, Yuri Rzhanov, May-Win Thein, Barbaros Celikkol
Pose Detection And Control Of Multiple Unmanned Underwater Vehicles Using Optical Feedback, Firat Eren, Shachak Pe'eri, Yuri Rzhanov, May-Win Thein, Barbaros Celikkol
Center for Coastal and Ocean Mapping
This paper proposes pose detection and control algorithms in order to control the relative pose between two Unmanned Underwater Vehicles (UUVs) using optical feedback. The leader UUV is configured to have a light source at its crest which acts as a guiding beacon for the follower UUV which has a detector array at its bow. Pose detection algorithms are developed based on a classifier, such as the Spectral Angle Mapper (SAM), and chosen image parameters. An archive look-up table is constructed for varying combinations of 5-degree-of-freedom (DOF) motion (i.e., translation along all three coordinate axes as well as pitch and …
Climate Change In Southern New Hampshire: Past, Present And Future, Cameron P. Wake, Elizabeth A. Burakowski, Peter Wilkinson, Katharine Hayhoe, Anne Stoner, C. Keeley, Julie Labranche
Climate Change In Southern New Hampshire: Past, Present And Future, Cameron P. Wake, Elizabeth A. Burakowski, Peter Wilkinson, Katharine Hayhoe, Anne Stoner, C. Keeley, Julie Labranche
The Sustainability Institute Publications
EARTH’S CLIMATE CHANGES. It always has and always will. However, an extensive and growing body of scientific evidence indicates that human activities—including the burning of fossil fuel (coal, oil, and natural gas) for energy, clearing of forested lands for agriculture, and raising livestock—are now the primary force driving change in the Earth’s climate system. This report describes how the climate of southern New Hampshire has changed over the past century and how the future climate of the region will be affected by a warmer planet due to human activities.
Salt Marsh Values In A Changing World: Examining Sea Level Rise On Tidal Marshes With A Surface Elevation Table, Sarah Martina Tierney
Salt Marsh Values In A Changing World: Examining Sea Level Rise On Tidal Marshes With A Surface Elevation Table, Sarah Martina Tierney
Student Research Projects
Rising seas are threatening coastal communities and putting added pressures on the natural environment. Sea level rise rates are increasing on a global scale (from 1.7 to 3.2 mm/yr). Salt marshes are not only intertidal habitats acutely influenced by sea levels, but they also provide key ecosystem services such as: buffers against storm surges, habitat for wildlife, carbon dioxide storage, and pollutant filtration. In New England, salt marshes have built at a rate of 1 to 2 mm annually over the past 4,000 years, which has kept pace with sea level rise. However, we do not know if salt marshes …
Caratterizzazione Dell’Ambiente Marino Dei Campi Flegrei. Risultati Preliminari Della Campagna Oceanografica Ricamar 2013, M. Grassi, C. Carmisciano, L. Cocchi, L. Dialti, M. Filippone, Matteo Guideri, Roberta Ivaldi, Giuseppe Masetti, F. Muccini, M. Pratellesi, E. Ricci, Paolo Stefanelli
Caratterizzazione Dell’Ambiente Marino Dei Campi Flegrei. Risultati Preliminari Della Campagna Oceanografica Ricamar 2013, M. Grassi, C. Carmisciano, L. Cocchi, L. Dialti, M. Filippone, Matteo Guideri, Roberta Ivaldi, Giuseppe Masetti, F. Muccini, M. Pratellesi, E. Ricci, Paolo Stefanelli
Center for Coastal and Ocean Mapping
The caldera of the Phlegraean Fields (also known as Campi Flegrei) is one of the most dangerous and populated volcanic area in the world, covering an area that comprises the western part of Naples and the Gulf of Pozzuoli. The main peculiarity of current volcanic activity is the gradual and periodic lift (positive or negative) of part of the Earth's surface (bradyseism) combined, only during the positive phase, with a strong sismicity and surficial hydrotermal activity. Deformative models, calibrated using land-based measurements, highlighted the Gulf of Pozzuoli as the area with the largest deformation. Although the network of monitoring sensors …
Alb Evaluation For Noaa Charting Requirements, Gretchen Imahori, Shachak Pe'eri, Christopher E. Parrish
Alb Evaluation For Noaa Charting Requirements, Gretchen Imahori, Shachak Pe'eri, Christopher E. Parrish
Center for Coastal and Ocean Mapping
The National Oceanic and Atmospheric Administration (NOAA) acquires hydrographic data around the coasts of the US and its territories using in-house surveys and contracting resources. Hydrographic data are primarily collected using sonar systems, while a small percent is acquired via Airborne Lidar Bathymetry (ALB) for nearshore areas. NOAA has an ongoing requirement, as per the Coast and Geodetic Survey Act of 1947, to survey nearshore areas as part of its coastal mapping activities, including updating nautical charts, creating hydrodynamic models and supporting coastal planning and habitat mapping. NOAA has initiated a project to investigate the potential use of ALB data …
A Detailed Seabed Signature From Hurricane Sandy Revealed In Bedforms And Scour, Arthur Trembanis, Carter Duval, Jonathan Beaudoin, Val E. Schmidt, Doug Miller, Larry A. Mayer
A Detailed Seabed Signature From Hurricane Sandy Revealed In Bedforms And Scour, Arthur Trembanis, Carter Duval, Jonathan Beaudoin, Val E. Schmidt, Doug Miller, Larry A. Mayer
Center for Coastal and Ocean Mapping
On 30 October 2012, Hurricane Sandy made landfall near Brigantine New Jersey bringing widespread erosion and damage to the coastline. We have obtained a unique set of high-resolution before and after storm measurements of seabed morphology and in situhydrodynamic conditions (waves and currents) capturing the impact of the storm at an inner continental shelf field site known as the “Redbird reef”. Understanding the signature of this storm event is important for identifying the impacts of such events and for understanding the role that such events have in the transport of sediment and marine debris on the inner continental shelf. …
Gradual Generalization Of Nautical Chart Contours With A Cube B-Spline Snake Model, Dandan Miao, Brian R. Calder
Gradual Generalization Of Nautical Chart Contours With A Cube B-Spline Snake Model, Dandan Miao, Brian R. Calder
Center for Coastal and Ocean Mapping
—B-spline snake methods have been used in cartographic generalization in the past decade, particularly in the generalization of navigational charts where this method yields good results with respect to the shoal-bias rules for generalization of chart contours. However, previous studies only show generalization results at particular generalization (or scale) levels, and the user can only see two conditions: before the generalization and after generalization, but nothing in between. This paper presents an improved method of using B-spline snakes for generalization in the context of nautical charts, where the generalization process is done gradually, and the user can see the complete …
Designing Improved Sediment Transport Visualizations, Chris Englert, Thomas J. Butkiewicz, Larry A. Mayer, Val E. Schmidt, Jonathan Beaudoin, Arthur Trembanis, Carter Duval
Designing Improved Sediment Transport Visualizations, Chris Englert, Thomas J. Butkiewicz, Larry A. Mayer, Val E. Schmidt, Jonathan Beaudoin, Arthur Trembanis, Carter Duval
Center for Coastal and Ocean Mapping
Monitoring, or more commonly, modeling of sediment transport in the coastal environment is a critical task with relevance to coastline stability, beach erosion, tracking environmental contaminants, and safety of navigation. Increased intensity and regularity of storms such as Superstorm Sandy heighten the importance of our understanding of sediment transport processes. A weakness of current modeling capabilities is the ability to easily visualize the result in an intuitive manner. Many of the available visualization software packages display only a single variable at once, usually as a two-dimensional, plan-view cross-section. With such limited display capabilities, sophisticated 3D models are undermined in both …
Evaluating The Usace's Ncmp For Noaa Charting Operations, Gretchen Imahori, Shachak Pe'eri, Christopher Parrish, Toshi Wozumi, Stephen A. White, Inseong Jeong, Christopher L. Macon
Evaluating The Usace's Ncmp For Noaa Charting Operations, Gretchen Imahori, Shachak Pe'eri, Christopher Parrish, Toshi Wozumi, Stephen A. White, Inseong Jeong, Christopher L. Macon
Center for Coastal and Ocean Mapping
No abstract provided.
Satellite-Derived Bathymetry: A Reconnaissance Tool For Hydrography, Shachak Pe'eri, Christopher Parrish, Lee Alexander, Andy Armstrong
Satellite-Derived Bathymetry: A Reconnaissance Tool For Hydrography, Shachak Pe'eri, Christopher Parrish, Lee Alexander, Andy Armstrong
Center for Coastal and Ocean Mapping
No abstract provided.
Snow Spectral Albedo At Summit, Greenland: Measurements And Numerical Simulations Based On Physical And Chemical Properties Of The Snowpack, Carlo Carmagnola, Florent Domine, Marie Dumont, Patrick Wright, B Strellis, M Bergin, Jack E. Dibb, G Picard, Q Libois, L Arnaud, S Morin
Snow Spectral Albedo At Summit, Greenland: Measurements And Numerical Simulations Based On Physical And Chemical Properties Of The Snowpack, Carlo Carmagnola, Florent Domine, Marie Dumont, Patrick Wright, B Strellis, M Bergin, Jack E. Dibb, G Picard, Q Libois, L Arnaud, S Morin
Earth Sciences
The broadband albedo of surface snow is determined both by the near-surface profile of the physical and chemical properties of the snowpack and by the spectral and angular characteristics of the incident solar radiation. Simultaneous measurements of the physical and chemical properties of snow were carried out at Summit Camp, Greenland (72°36´ N, 38°25´ W, 3210 m a.s.l.) in May and June 2011, along with spectral albedo measurements. One of the main objectives of the field campaign was to test our ability to predict snow spectral albedo by comparing the measured albedo to the albedo calculated with a radiative transfer …