NDLI: Improved global marine gravity by retracking altimeter waveforms

Please wait, while we are loading the content...

OCEANS 2015 - MTS/IEEE Washington

2014 Oceans - St. John's

2013 OCEANS - San Diego

OCEANS'11 MTS/IEEE KONA

OCEANS 2010 MTS/IEEE SEATTLE

Proceedings of OCEANS 2005 MTS/IEEE

Oceans '04 MTS/IEEE Techno-Ocean '04 (IEEE Cat. No.04CH37600)

Oceans 2003. Celebrating the Past ... Teaming Toward the Future (IEEE Cat. No.03CH37492)

Volume 5 - 2003

Volume 4 - 2003

Volume 3 - 2003

Volume 2 - 2003

Time domain geoacoustic inversion using ship noise

Estimates of geoacoustic model parameters from inversions of horizontal and vertical line array data

Geoacoustic model parameter estimation using a bottom moored hydrophone array

Biosonar model for improved range accuracy in a noisy environment

Evidence for acoustic imaging capability in a bottlenose dolphin

A filterbank model for echo delay estimation in biosonar

Target echo processing in the dolphin's auditory system

Characterization of various fluids in cylinders from dolphin sonar data in the interval domain

Discrimination of the signals with identical energy spectra by the bottlenose dolphin

Performance of an AUV navigation system at Arctic latitudes

A comparison of AUV navigation performance: a system approach

Fuel-optimally guided navigation and tracking control of AUV under current interaction

Model experiment of a launcher of a Deep-Sea Monitoring Robot System

Visual servoing for underwater docking of an autonomous underwater vehicle with one camera

Post mission trajectory smoothing for the Isurus AUV

Preliminary identification of a dynamical plant model for the Jason 2 underwater robotic vehicle

User-assisted trajectory generation- of underwater vehicles

Controlling the dynamic positioning of a ROV

Integrated maneuver and control design for ROV operations

Multivariable saturating control and antiwindup control for the phantom 500 body motion: a comparison

NEOS: the North East Ocean Observing System by: Scott Glenn & NEOS partners

Carolinas Coastal Ocean Observing and Prediction System: enhancing US integrated ocean observing system through improved regional coastal observations and services

Bonne bay ocean observatory

Automated control of a fleet of Slocum gliders within an operational coastal observatory

AUV surveys of bioluminescence and coastal processes in the Monterey Bay

An assessment of fecal coliform bacteria in cruise ship wastewater discharge

Biological and ecological effects of wastewater discharges from cruise ships in Alaska

Evaluation of new technology for shipboard wastewater treatment

Global change in ocean circulation from satellite sea surface temperature records: implications for the future of coral-reefs, fisheries, and climate change

Restoring coral reefs, oyster banks, and fisheries by seawater electrolysis: coastal zone management and tourism applications

Improved global marine gravity by retracking altimeter waveforms

Real-time positioning and navigation for ocean applications using GPS

Integrating bathymetry, topography, and shoreline, and the importance of vertical datums

GPS/acoustic seafloor positioning experiment in the subduction zone of the Japan Trench

Alaska Peninsula deployment of laser airborne bathymetric system

Oceanographic profiler for shallow water

The evolution of a deep water current meter, the Argonaut-MD

Water level prediction skill of an operational marine forecast using a hybrid Kalman filter and time series modeling approach

Tropical air-sea interaction in the navy coupled data assimilation/modeling system

Performance evaluation of two neural network-based models for predicting sea ice concentration

Artificial reef site selection: geophysical surveys for San Clemente Kelp reef

Assessing the ecological risk of creating artificial reefs from ex-warships

Benthic community settled on an artificial reef in the Western Adriatic Sea (Italy)

Investigating terrain changes around two artificial reefs by using the multibeam echosounder (western Adriatic Sea, Italy)

Yukon artificial reef monitoring project. Data collection using volunteer research divers

Seasonality of blue and fin whale calls west of the Antarctic Peninsula

Advances in density and abundance estimation for cetaceans using geospatial modeling

Cetacean abundance in the eastern tropical Pacific

Automated model-based localization of sperm whale clicks

Spatial and temporal patterns in visual and acoustic detection rates of blue whales in the southern California Bight

A holographic system for subsea recording and analysis of plankton and other marine particles (HOLOMAR)

Precision underwater positioning for in situ laser Raman spectrographic applications

Study of the effectiveness of infrared LED source for underwater night photography

Quantifying upper ocean response to surface wind field forcing during an MJO

The northern annular mode in atmosphere-ocean coupling

Coupling between the atmosphere and Asian Marginal Seas

Mixed-layer heat budget associated with ENSO, IOD, and PDO inferred from satellite ocean data assimilation

Our recent understanding about the eddies in the South China Sea

Development of offshore monitoring platform "SOLAReS" for SOLAS

Technical feasibility of "Eco-Platform" - technology integration for the 21st century

Utilization of a very large mobile offshore structure for clean energy conversion

Load-out operation of South Pars Gas Field-phase 1 production platform in the Persian Gulf

Real sea experiment of ocean nutrient enhancer "TAKUMI" upwelling deep ocean water

Ambient Noise Imaging-first deployments of ROMANIS and preliminary data analysis

Origins of directionality in snapping shrimp sounds and its potential applications

Angular dependence of statistical distributions for backscattered signals: modelling and application to multibeam echosounder data

High-frequency broadband matched field processing in the 8-16 kHz band

Time-reversal imaging of distant targets in shallow water channel

Source depth estimation using matched field processing and frequency-wavenumber transform

On the use of time-frequency methods in the oceanic passive tomography context

Quantitive ambiguity analysis for matched-field source localization under spatially-correlated noise field

Advanced mission management for long-range autonomous underwater vehicles

Using a high order sliding modes for diving control a torpedo autonomous underwater vehicle

Experimental results of an autonomous underwater vehicle "Urashima"

Advanced glider concepts for missions beyond oceanographic vertical profiling

Alternatives for enhancement of transport economy in underwater gliders

Glider control: a close look into the current glider controller structure and future developments

Mapping ocean bathymetry using an AUV equipped of an altimeter: a terrain-driven approach

Field results of multi-UUV missions using ranger micro-UUVs

Chemical plume tracing experimental results with a REMUS AUV

Variability in the wave climate of the North Pacific: links to interannual and interdecadal variability

ENSO and winter storms in California

Variability of storm-forced extreme sea levels along the U.S. West Coast

Tide and sea level fluctuations from days to decades

The influence of climate on the flux of sediment to the coastal ocean

Collaborative nautical charting and scientific seabed mapping missions: a case study in the Northwestern Hawaiian Islands

Plane-based calibration for multibeam sonar mounting angles

Analogous response of the North Pacific intermediate water to 20th century and glacial age climate changes

Tropical Atlantic and Indian Ocean influences on the terrestrial and marine resources of Africa

Digital atlas and evaluation of the influence of inter-annual variability on climate analyses

Doing tangible, applied, community based marine restoration in the U.S.: the TNC/CRP experience

Legal regulation of ocean energy systems

Comparison on the characteristics of natural sound of waves and imitation sound of waves in terms of comfort level

Environmental engineering Grade A shock tests

Ecosystem-based management-a new goal under NOAA's strategic plan

A tidal habitat restoration success story - the Union Slough (WA) restoration project

SIOExplorer: IT for research and education

New developments in Internet-based delivery of MetOc data to Warfighters

Spatio-temporal data access for information-based decision making

EnVis/Hum: high-resolution ocean model visualization and display

Parallel software solutions for processing hydrographic data

Project NEPTUNE: an interactive, regional cabled ocean observatory in the Northeast Pacific

Dynamics of Earth and Ocean Systems (DEOS)

Validation of QSCAT vector winds with air-sea interaction spar fluxes

QuikSCAT wind retrievals for tropical cyclones

Fine resolution satellite-based winds for episodic events

A new temporal interpolation method for high-frequency vector wind fields

Improving bend-over-sheave fatigue in fiber ropes

Fatigue and residual strength of fiber tuglines

Proper use of fiber ropes on capstans and bitts

Modeling the effects of surface sediments and small scale bathymetry upon high-frequency shallow water reverberation

Acoustic echo formation-a filter theory approach

Wave reflection from porous ocean sediment with depth-dependent properties

Acoustic wave scattering from a rough seabed over a sediment layer with generalized-exponential density and inverse-square sound speed profiles

Analysis of the field of narrow-band signals percolating into marine bottom

High rate acoustic link for underwater video transmission

3D acoustic image segmentation by a RANSAC-based approach

Normalization of ambient background intensity in high-resolution sonar imagery and its impact on mine detection and classification

The use of texture measures in improving mine classification performance

Relevance vector machine feature selection and classification for underwater targets

Processing string fusion approach investigation for automated sea mine classification in shallow water

Real-time performance of fusion algorithms for computer aided detection and classification of bottom mines in the littoral environment

Conformal hull search using the harbor defense CetusII AUV

NAVOCEANO seahorse AUV participation in the giant shadow experiment

A solar-powered autonomous underwater vehicle

The HUGIN 1000 autonomous underwater vehicle for military applications

A toolbox of aiding techniques for the HUGIN AUV integrated inertial navigation system

A Wearable Vehicle Interface for augmented reality in operating AUVs

Development of an autonomous underwater vehicle for sub-ice environmental monitoring in Prudhoe Bay, Alaska

A deep sea AUV "MR-X1" for scientific work

Volume 1 - 2003

OCEANS '02 MTS/IEEE

MTS/IEEE Oceans 2001. An Ocean Odyssey. Conference Proceedings (IEEE Cat. No.01CH37295)

OCEANS 2000 MTS/IEEE Conference and Exhibition. Conference Proceedings (Cat. No.00CH37158)

Oceans '99. MTS/IEEE. Riding the Crest into the 21st Century. Conference and Exhibition. Conference Proceedings (IEEE Cat. No.99CH37008)

IEEE Oceanic Engineering Society. OCEANS'98. Conference Proceedings (Cat. No.98CH36259)

Oceans '97. MTS/IEEE Conference Proceedings

OCEANS 96 MTS/IEEE Conference Proceedings. The Coastal Ocean - Prospects for the 21st Century

'Challenges of Our Changing Global Environment'. Conference Proceedings. OCEANS '95 MTS/IEEE

Proceedings of OCEANS'94

Proceedings of OCEANS '93

OCEANS 92 Proceedings@m_Mastering the Oceans Through Technology

OCEANS 91 Proceedings

Conference Proceedings on Engineering in the Ocean Environment

Proceedings OCEANS

OCEANS '88. 'A Partnership of Marine Interests'. Proceedings

OCEANS '85 - Ocean Engineering and the Environment

Proceedings OCEANS '83

OCEANS '77 Conference Record

OCEAN 75 Conference

Ocean '74 - IEEE International Conference on Engineering in the Ocean Environment

Ocean 73 - IEEE International Conference on Engineering in the Ocean Environment

Ocean 72 - IEEE International Conference on Engineering in the Ocean Environment

IEEE 1971 Conference on Engineering in the Ocean Environment

1970 IEEE International Conference on Engineering in the Ocean Environment - Digest of Technical Papers

Improved global marine gravity by retracking altimeter waveforms

Content Provider	IEEE Xplore Digital Library
Author	Sandwell, D.T.
Copyright Year	2003
Description	Author affiliation: Scripps Instn. of Oceanogr., Univ. of California, San Diego, CA, USA (Sandwell, D.T.)
Abstract	We present a new global marine gravity anomaly model with errors nearly a factor of two lower than our previous global models. This improvement is achieved by re-tracking the raw echoes of the ERS-1 radar altimeter. Ocean surface waves are a fundamental limitation to the recovery of gravity anomalies from satellite altimeter profiles. For example, to recover the gravity field at an accuracy of 1 mGal at 20-km full wavelength requires measuring the ocean surface height change over a 10-km horizontal distance to a precision of 1 cm. Standard processing of altimeter data provides a height precision of only about 5 cm at this length scale. These standard products are optimized for recovery of ocean surface height, significant wave height and wind speed and are based on tracking algorithms having at least three unknown parameters. The most precise retracking algorithms are heavily weighted to match the onset time of the leading edge but we show this onset time is nearly perfectly correlated with the wave height parameter. If one assumes the wave height changes only slowly with distance, re-tracking can be performed with a more precise, two-parameter model. Repeat cycles across the South Pacific (area of high sea state) show improvement in along-track slope error from 6.39 microradian to 3.34 microradian and there is a corresponding improvement in resolution from 40 km to 31 km. In addition there are improvements in ocean coverage, especially near coastlines and on the shallow continental margins. The quality of the retracked ERS-1 data are superior to non-retracked Geosat geodetic mission data suggesting the Geosat data can be improved as well.
Sponsorship	Dept. of the Navy Sci. and Technol. Coalition for Enhanced Marine Resources Orincon Ceros Harbour Offshore Inc
File Size	50736
File Format	PDF
ISBN	0933957300
DOI	10.1109/OCEANS.2003.178408
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2003-09-22
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	MTS
Subject Keyword	Gravity Oceans Surface waves Sea surface Spaceborne radar Satellites Sea measurements Wavelength measurement Wind speed Radar tracking
Content Type	Text
Resource Type	Article

Central Library (ISO-9001:2015 Certified)
Indian Institute of Technology Kharagpur
Kharagpur, West Bengal, India | PIN - 721302

See location in the Map
03222 282435
Mail: support@ndl.gov.in

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in