Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method for distinguishing marine red tide algaes by using MODIS ocean color remote sensing data

A discrimination method, a technology of remote sensing data, applied in the measurement of color/spectral characteristics, etc., which can solve problems such as application failure and complex optical properties of water bodies.

Inactive Publication Date: 2013-02-06
SECOND INST OF OCEANOGRAPHY MNR
View PDF3 Cites 20 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The optical properties of water bodies in areas with high incidence of marine red tides are complex, and are interfered by colored dissolved organic matter and suspended particles in water bodies. Existing red tide spectral extraction methods often fail to apply in this sea area.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for distinguishing marine red tide algaes by using MODIS ocean color remote sensing data
  • Method for distinguishing marine red tide algaes by using MODIS ocean color remote sensing data
  • Method for distinguishing marine red tide algaes by using MODIS ocean color remote sensing data

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0018] The invention can directly reflect the physiological and biochemical characteristics of water body substances by using the inherent optical quantity, and show differences with the change of water body substances, effectively eliminate the interference of nearshore water body substances, and realize the effective distinction between red tide water bodies and non-red tide water bodies and the identification of red tide algae species has huge potential. Therefore, starting from the inherent optical quantity of the water body, the red tide and non-red tide water bodies of the ocean, as well as the red tides of dinoflagellates and diatoms are analyzed, and a red tide extraction method suitable for marine areas is established.

[0019] Such as Figure 4 Shown, the present invention utilizes the marine red tide algal discrimination method of MODIS water color remote sensing data, comprises the following steps:

[0020] Step 1. Obtain MODIS water color remote sensing secondary...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a method for distinguishing marine red tide algaes by using MODIS ocean color remote sensing data. The method comprises the following steps: firstly, acquiring the data of a MODIS ocean color remote secondary product to calculate the relative height indexes of a spectrum; secondly, using an inverse absorbing coefficient and a backscattering coefficient of the MODIS ocean color remote secondary product to calculate the spectrum ratio, and then using the index methods of the relative height indexes of the spectrum and the fixed optical quantity to identify the red tide water regions; and finally combining the unit logarithmic pigment proportion, the chlorophyll ratio absorbance coefficient and the back scattering ratio to judge the algaes. According to the method, the information difference between the difference wave bands in the ocean color remote sensing data is utilized to simply and legibly judge and provide the red tide suspected regions and the suspected algaes in the marine region.

Description

technical field [0001] The invention relates to a method for discriminating algae species using water color remote sensing data, in particular to a method for discriminating marine red tide algae species using MODIS (moderate-resolution imaging spectroradiometer) water color remote sensing data. Background technique [0002] Red tide is a marine phenomenon caused by the short-term accumulation or explosive proliferation of algae in water bodies. It is expressed in English as Algal Bloom or red tide. When red tides occur near the shore and endanger the economy and life safety of fishery, aquaculture, tourism and even human society, it is defined as Harmful Algal Bloom. Usually the red tide we are concerned about is the harmful red tide in the coastal waters. The harm of red tide is mainly reflected in that the proliferation of a large number of algae will block the sunlight, the algae cells will block the gills of the fish, and the dissolved oxygen in the water body will be ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): G01N21/31
Inventor 朱乾坤毛志华徐晓辉陈建裕陶帮一雷惠
Owner SECOND INST OF OCEANOGRAPHY MNR
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com