OUR WEB COUNTER SAYS THAT YOU ARE VISITOR NUMBER: |
Workshop Rationale
Since the early days of Crombie (1955) numerous groups have developed HF radars with various degree of success. Applications have been limited to short, concept-proofing experiments. However, over the past decade, several additional groups have emerged and either developed next generation HF radar systems and/or begun to use them for routine and longer-term oceanographic applications.
The workshop will provide a forum where participants from around world will present results and discuss issues concerning HF radars. The workshop goals are:
Our plan is to divide the workshop into four major themes:
Workshop Topics
The four themes are chosen to stimulate discussions in these areas, but also to expose the cross-linkages among them. Below we list numerous examples of issues that should be covered in the workshops over the next years.
1. INSTRUMENTATION/TECHNOLOGY
Pulsed, coded waveform, FMCW:
Average power/range
Frequency selection
Adjustable in software or hardware
Automatic switching or interleaving
Simultaneous switching (multi-frequency)
Receive:
Linear array, staggered array, co-located
Loop elements, monopole elements, passsive vs. active
Transmit:
Omnidirectional monopole, directional YAGI, other directional
Single frequency (optimized lengths), dual frequency (traps), multiple frequency
Cabling, shielding, corrosion
Calibration (see ALGORITHMS)
Location:
Beach / cliff
Tower / offshore platform
Ship
Platforms:
Mac
PC
Workstation
Operating system:
Mac
Windows
NT UNIX
Data formats:
ASCII
NetCDF
MATLAB Other
Autonomous operations:
Communications
Phone-line
Direct internet
Radio modem (e.g. UHF)
Cellular phone
Satellite dish
Sneaker net
Power and back-up
Direct power
On-site generators
Power conditioners and UPS
Remote re-start
Solar panels
Storage systems
Hard disks
Removable media
Tapes
CDs
Software
Proprietary data acquisition
User-supplied processing software
Graphical display (e.g. GUI)
Community library of HF utilites (version 1 in MATLAB)
Menu-driven controls and commands
2. PHYSICS
Minimum vs. optimal footprint:
Mimimum vs. optimal dwell time:
Ground wave:
Sky wave:
Antenna location-distance to water, soil moisture and composition:
Salinity:
Environmental:
Atmospheric
Surface waves
EM interference
Instrument:
Temperature
Humidity
corrosion
Others
Shoaling effects:
Non-linear interactions:
3. ALGORITHMS
Beam Forming:
Antenna weighting
Antenna spacing
Site calibration:
Transponder surveys
Fixed-site transponder time series
Near field transponder surveys
Element-to-element gains
MUSIC vs. least squares:
Phase vs. amplitude methods:
Site calibration (see above):
Differential element drift
Sampling / averaging / ensembling:
Post-radial smoothing:
Peak picking:
Real-time error flags:
Peak shape
S/N
time continuity
GDOP
geophysical contamination
Radial coverage
ship contamination
MUSIC noise level
Surface Waves:
Significant wave height
Barrick
Maresca
Georges
Heron
Others
Directional Waves
Wyatt
Howell and Walsh
Hisaki
Others
Wind Direction:
Trizna Method - universal calibration values?
Sea state dependence
Wind Speed:
Shear-based estimate from MCR
Hybrid buoy/HF estimate
Others?
Ship Echoes:
Error elimination
Ship tracking
Antenna calibration
Antenna calibration
4. APPLICATIONS
Seasonal coastal current patterns:
Eddies:
Upwelling filaments:
Barotropic and baroclinic:
Topographic effects:
Seabreeze:
Coastal set up:
Near-surface shear and momentum transfer:
Oil spills:
Search and rescue:
Larval transport:
Strong current warnings:
Ship routing:
Wave warnings:
El Nino:
Along-coast propagating signals
Surf reports:
Sediment transport:
Longshore currents:
Assimilation into ocean circulation models:
Assimilation into ocean wave prediction models:
Development of space-time error models:
Assimilation into atmospheric circulation models:
Oil spill hazard assessment:
The Workshop registration fee of $150 includes a copy of the Workshop proceedings and abstracts, opening reception, and morning and afternoon coffee breaks. We will also seek a limited amount of money to support travel for participants unable to obtain reimbursement from other sources. Those anticipating need of support should contact the organizers as soon as possible. Contact information is provided below.
Important dates
|
February 15, 2001 |
|
March 15, 2001 |
|
January 31, 2001 |
|
February 9, 2001 |
|
June 8, 2001 |
|
April 9-12, 2001 |
MANUSCRIPTS: The symposium proceedings will be published as a monograph by the University of Miami. We will follow the format by the American Geophysical Union and will provide first authors with detailed instructions for manuscript preparation at the workshop. Templates for MS Word, Wordperfect, or LaTex will be available via email and/or at the ROW website. Please note that the maximum number of pages for each contribution will be six (6), using the AGU format. Please prepare your manuscript following the AGU guidelines and submit four (4) camera ready copies of the manuscript to the organizers at the due date in June 2001.
Hans Graber (Co-Chair), Rosenstiel School of Marine and Atmospheric Science/University of Miami, USA
Jeffrey Paduan (Co-Chair), Naval Postgraduate School, USA
Program Committee
Michael Kosro, Oregon State University, USA
Lucy Wyatt, Sheffield University, United Kingdom
Malcolm Heron, James Cook University, Australia
Lynn "Nick" Shay, Rosenstiel School of Marine and Atmospheric Science/University of Miami, USA
Contact: Frances Sampedro
University of Miami
Rosenstiel School of Marine and Atmospheric Science
Division of Applied Marine Physics
4600 Rickenbacker Causeway
Miami, Florida 33149 USA
Tel: +1 305-361-4772
Fax: +1 305-361-4701
Email: row2001@rsmas.miami.edu
 |
 |