Data

2019-20 Honours project - Patterns and trends of frontal activity in Australian marine hotspots

Australian Ocean Data Network
Yang, Kai ; Fischer, Andrew
Viewed: [[ro.stat.viewed]] Cited: [[ro.stat.cited]] Accessed: [[ro.stat.accessed]]
ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rfr_id=info%3Asid%2FANDS&rft_id=https://metadata.imas.utas.edu.au/geonetwork/srv/eng/catalog.search#/metadata/fffaa8dd-46a6-40a8-91c9-e001055025fb&rft.title=2019-20 Honours project - Patterns and trends of frontal activity in Australian marine hotspots&rft.identifier=https://metadata.imas.utas.edu.au/geonetwork/srv/eng/catalog.search#/metadata/fffaa8dd-46a6-40a8-91c9-e001055025fb&rft.description=This record contains: 1. Thesis 2. The MATLAB codes of the adaptive Canny gradient-based edge detection algorithm and calculating frontal probability/density (for AVHRR data and MODIS data separately). 3. Frontal probability (probability of frontal encounter, PFE) and frontal density (FD) data over Australian hotspot regions (for AVHRR data and MODIS data separately) 4. Results of the Mann-Kendall trend test The purpose of this study is to verify the regional trends of frontal activity within the two marine hotspots near Australia and compare the performance of the two edge detection algorithms.Maintenance and Update Frequency: notPlannedStatement: This study used two daytime sea surface temperature (SST) products (AVHRR and MODIS) to define marine thermal fronts. AVHRR SST product was obtained by Australia's Integrated Marine Observing System (IMOS) from the National Oceanic and Atmospheric Administration (NOAA) Advanced Very High-Resolution Radiometer (AVHRR) on all available NOAA Polar-orbiting Operational Environmental Satellites (POES). It was downloaded from the Australia Ocean Data Network (AODN). It is a six-day average SST product and with 1.1 km spatial resolution. Time ranged from 1993 to 2018. MODIS SST product with a 4×4 km spatial resolution was obtained from the NASA EOSDIS Physical Oceanography Distributed Active Archive Center (PO.DAAC) from NASA’s Moderate Resolution Imaging Spectroradiometer (MODIS) on the Aqua satellite. It is an eight-day average SST product. Time ranged from 2003 to 2018 Two algorithms were used to define marine thermal fronts: the adaptive Canny gradient-based edge detection algorithm and the Cayula and Cornillon single image edge detection (SIED) algorithm. The detected frontal maps were used to calculate the probability of frontal encounter (PFE) and frontal density (FD). The application of the Cayula and Cornillon SIED method was achieved by using an available ArcGIS Toolbox (Marine Geospatial Ecology Tools, MGET), so it won't be involved in this record.&rft.creator=Yang, Kai &rft.creator=Fischer, Andrew &rft.date=2020&rft.coverage=westlimit=146; southlimit=-43.0; eastlimit=161.0; northlimit=-25&rft.coverage=westlimit=146; southlimit=-43.0; eastlimit=161.0; northlimit=-25&rft.coverage=westlimit=88; southlimit=-43.0; eastlimit=117.0; northlimit=-21.0&rft.coverage=westlimit=88; southlimit=-43.0; eastlimit=117.0; northlimit=-21.0&rft_rights=Creative Commons Attribution 4.0 International License http://creativecommons.org/licenses/by/4.0/&rft_rights=The citation in a list of references is: citation author name/s (year metadata published), metadata title. Citation author organisation/s. File identifier and Data accessed at (add http link).&rft_rights=The data described in this record are the intellectual property of the University of Tasmania through the Institute for Marine and Antarctic Studies.&rft_subject=oceans&rft_subject=FRONTAL PROBABILITY&rft_subject=FRONTAL DENSITY&rft_subject=EARTH SCIENCE | OCEANS | OCEAN CIRCULATION | FRONTS&rft_subject=EARTH SCIENCE | BIOSPHERE | ECOSYSTEMS | MARINE ECOSYSTEMS | COASTAL&rft_subject=EARTH SCIENCE | CLIMATE INDICATORS | ATMOSPHERIC/OCEAN INDICATORS | SEA SURFACE TEMPERATURE INDICES&rft_subject=Climatology (excl. Climate Change Processes)&rft_subject=EARTH SCIENCES&rft_subject=ATMOSPHERIC SCIENCES&rft_subject=Physical Oceanography&rft_subject=OCEANOGRAPHY&rft_subject=Annual probability of frontal encounter (PFE) over the South East Australia hotspot (AVHRR data, Canny method)&rft_subject=Annual probability of frontal encounter (PFE) over the South West Australia hotspot (AVHRR data, Canny method)&rft_subject=Monthly probability of frontal encounter (PFE) over the South East Australia hotspot (AVHRR data, Canny method)&rft_subject=Monthly probability of frontal encounter (PFE) over the South West Australia hotspot (AVHRR data, Canny method)&rft_subject=6-day average frontal density (FD) over the South East Australia hotspot (AVHRR data, Canny method)&rft_subject=6-day average frontal density (FD) over the South West Australia hotspot (AVHRR data, Canny method)&rft_subject=Annual probability of frontal encounter (PFE) over the South East Australia hotspot (MODIS data, Canny method)&rft_subject=Annual probability of frontal encounter (PFE) over the South West Australia hotspot (MODIS data, Canny method)&rft_subject=Monthly probability of frontal encounter (PFE) over the South East Australia hotspot (MODIS data, Canny method)&rft_subject=Monthly probability of frontal encounter (PFE) over the South West Australia hotspot (MODIS data, Canny method)&rft_subject=6-day average frontal density (FD) over the South East Australia hotspot (MODIS data, Canny method)&rft_subject=6-day average frontal density (FD) over the South West Australia hotspot (MODIS data, Canny method)&rft_subject=Annual probability of frontal encounter (PFE) over the South East Australia hotspot (AVHRR data, Cayula and Cornillon method)&rft.type=dataset&rft.language=English Access the data
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The citation in a list of references is: citation author name/s (year metadata published), metadata title. Citation author organisation/s. File identifier and Data accessed at (add http link).

The data described in this record are the intellectual property of the University of Tasmania through the Institute for Marine and Antarctic Studies.

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Brief description

This record contains: 1. Thesis 2. The MATLAB codes of the adaptive Canny gradient-based edge detection algorithm and calculating frontal probability/density (for AVHRR data and MODIS data separately). 3. Frontal probability (probability of frontal encounter, PFE) and frontal density (FD) data over Australian hotspot regions (for AVHRR data and MODIS data separately) 4. Results of the Mann-Kendall trend test The purpose of this study is to verify the regional trends of frontal activity within the two marine hotspots near Australia and compare the performance of the two edge detection algorithms.

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Maintenance and Update Frequency: notPlanned
Statement: This study used two daytime sea surface temperature (SST) products (AVHRR and MODIS) to define marine thermal fronts. AVHRR SST product was obtained by Australia's Integrated Marine Observing System (IMOS) from the National Oceanic and Atmospheric Administration (NOAA) Advanced Very High-Resolution Radiometer (AVHRR) on all available NOAA Polar-orbiting Operational Environmental Satellites (POES). It was downloaded from the Australia Ocean Data Network (AODN). It is a six-day average SST product and with 1.1 km spatial resolution. Time ranged from 1993 to 2018. MODIS SST product with a 4×4 km spatial resolution was obtained from the NASA EOSDIS Physical Oceanography Distributed Active Archive Center (PO.DAAC) from NASA’s Moderate Resolution Imaging Spectroradiometer (MODIS) on the Aqua satellite. It is an eight-day average SST product. Time ranged from 2003 to 2018 Two algorithms were used to define marine thermal fronts: the adaptive Canny gradient-based edge detection algorithm and the Cayula and Cornillon single image edge detection (SIED) algorithm. The detected frontal maps were used to calculate the probability of frontal encounter (PFE) and frontal density (FD). The application of the Cayula and Cornillon SIED method was achieved by using an available ArcGIS Toolbox (Marine Geospatial Ecology Tools, MGET), so it won't be involved in this record.

Notes

Credit
IMAS Honours Student Program 2019-2020

Created: 2020-08-30

Data time period: 2019-07-10 to 2020-08-14

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161,-25 161,-43 146,-43 146,-25 161,-25

153.5,-34

117,-21 117,-43 88,-43 88,-21 117,-21

102.5,-32

text: westlimit=146; southlimit=-43.0; eastlimit=161.0; northlimit=-25

text: westlimit=88; southlimit=-43.0; eastlimit=117.0; northlimit=-21.0

Subjects
6-day average frontal density (FD) over the South East Australia hotspot (AVHRR data, Canny method) | 6-day average frontal density (FD) over the South East Australia hotspot (MODIS data, Canny method) | 6-day average frontal density (FD) over the South West Australia hotspot (AVHRR data, Canny method) | 6-day average frontal density (FD) over the South West Australia hotspot (MODIS data, Canny method) | Atmospheric Sciences | Annual probability of frontal encounter (PFE) over the South East Australia hotspot (AVHRR data, Canny method) | Annual probability of frontal encounter (PFE) over the South East Australia hotspot (AVHRR data, Cayula and Cornillon method) | Annual probability of frontal encounter (PFE) over the South East Australia hotspot (MODIS data, Canny method) | Annual probability of frontal encounter (PFE) over the South West Australia hotspot (AVHRR data, Canny method) | Annual probability of frontal encounter (PFE) over the South West Australia hotspot (MODIS data, Canny method) | Climatology (Excl. Climate Change Processes) | EARTH SCIENCE | BIOSPHERE | ECOSYSTEMS | MARINE ECOSYSTEMS | COASTAL | EARTH SCIENCE | CLIMATE INDICATORS | ATMOSPHERIC/OCEAN INDICATORS | SEA SURFACE TEMPERATURE INDICES | EARTH SCIENCE | OCEANS | OCEAN CIRCULATION | FRONTS | Earth Sciences | FRONTAL DENSITY | FRONTAL PROBABILITY | Monthly probability of frontal encounter (PFE) over the South East Australia hotspot (AVHRR data, Canny method) | Monthly probability of frontal encounter (PFE) over the South East Australia hotspot (MODIS data, Canny method) | Monthly probability of frontal encounter (PFE) over the South West Australia hotspot (AVHRR data, Canny method) | Monthly probability of frontal encounter (PFE) over the South West Australia hotspot (MODIS data, Canny method) | Oceanography | Physical Oceanography | oceans |

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Other Information
(DATA ACCESS - Patterns and trends of frontal activity in Australian marine hotspots [explore all files])

uri : https://data.imas.utas.edu.au/attachments/fffaa8dd-46a6-40a8-91c9-e001055025fb

(THESIS - Patterns and trends of frontal activity in Australian marine hotspots [PDF direct download])

uri : https://data.imas.utas.edu.au/attachments/fffaa8dd-46a6-40a8-91c9-e001055025fb/Kai_Yang_490063_Honours_thesis.pdf

Identifiers
  • global : fffaa8dd-46a6-40a8-91c9-e001055025fb