阅读说明：本技术 判定感兴趣温度所在水层和识别温跃层的装置与方法 (Device and method for judging water layer with temperature of interest and identifying thermocline ) 是由 周为峰 樊伟 崔雪森 唐峰华 张衡 戴阳 伍玉梅 于 2020-05-21 设计创作，主要内容包括：本发明涉及一种判定感兴趣温度所在水层和识别温跃层的装置,包括：主控单元、数据处理器、用户输入模块、剖面测量模块、显示控制装置和供电模块；本发明还提供一种判定感兴趣温度所在水层和识别温跃层的方法,包括：获取海洋温度剖面数据；根据用户选择,进行感兴趣温度所在水层计算或温跃层计算,所述感兴趣温度所在水层计算是指根据目标鱼种所需的温度范围,输入所需剖面水温的上下界阈值,并判定剖面水温阈值对应的水层深度；所述温跃层计算是指计算海洋温度剖面数据的垂直温度梯度,并根据温跃层梯度标准对温跃层进行识别,获取温跃层的上下界深度；本发明能够判别所需感兴趣温度所在水层和温跃层,能够满足海洋生产、养殖和科研探索需要。(The invention relates to a device for judging a water layer where an interested temperature is located and identifying a thermocline, which comprises the following components: the device comprises a main control unit, a data processor, a user input module, a profile measuring module, a display control device and a power supply module; the invention also provides a method for judging the water layer where the temperature of interest is located and identifying the thermocline, which comprises the following steps: acquiring ocean temperature profile data; according to the selection of a user, calculating a water layer where the temperature of interest is located or calculating a thermocline, wherein the calculation of the water layer where the temperature of interest is located refers to inputting upper and lower threshold values of the water temperature of the required section according to the temperature range required by the target fish species and judging the depth of the water layer corresponding to the threshold value of the water temperature of the section; the thermocline calculation refers to calculating the vertical temperature gradient of ocean temperature profile data, and identifying the thermocline according to the thermocline gradient standard to obtain the upper and lower bound depths of the thermocline; the invention can distinguish the water layer and the thermocline where the required interesting temperature is located, and can meet the requirements of ocean production, cultivation and scientific research.)

1. An apparatus for determining a water layer at a temperature of interest and identifying a thermocline, comprising: the device comprises a main control unit, a data processor, a user input module, a profile measuring module, a display control device and a power supply module; the main control unit is respectively connected with the data processor, the user input module, the profile measuring module and the power supply module, and the data processor is connected with the display control device; the profile measurement module sends the acquired ocean temperature profile data to the data processor through the main control unit for processing, and finally, the processing result is displayed visually through the display control device.

2. The apparatus of claim 1, wherein the data processor is a profile temperature data processor.

3. The apparatus for determining the water layer with the temperature of interest and identifying the thermocline according to claim 1, wherein the profile measuring module is provided with a profile measuring device and a data exchange interface; the profile measuring device is used for acquiring ocean temperature profile data, and the data exchange interface is connected with the main control unit and used for transmitting the ocean temperature profile data to the main control unit.

4. A method of determining a water layer at a temperature of interest and identifying a thermocline, using the apparatus of any one of claims 1-3 for determining a water layer at a temperature of interest and identifying a thermocline, comprising:

step (1): acquiring ocean temperature profile data measured at a fixed position by using the profile measuring module, wherein the ocean temperature profile data divides the seawater into n layers from the sea surface to the seabed, and the depth of the n layers of water is expressed as Z₁,Z₂,......,Z_nDepth of the n layers of waterThe corresponding temperature is denoted T₁,T₂,......,T_n；

Step (2): according to the selection of a user, calculating a water layer where the temperature of interest is located or calculating a thermocline, wherein the calculation of the water layer where the temperature of interest is located refers to inputting an upper threshold T of the water temperature of a required section according to the temperature range required by the target fish species_maxAnd lower threshold value T of profile water temperature_minPassing through the upper threshold value T of the profile water temperature_maxAnd lower threshold value T of profile water temperature_minThe formed threshold range is searched in the obtained ocean temperature profile data, the water layer depth corresponding to the profile water temperature threshold is judged and is marked; and the thermocline calculation refers to calculating the vertical temperature gradient of the ocean temperature profile data, identifying the thermocline according to the thermocline gradient standard and acquiring the upper bound depth and the lower bound depth of the thermocline.

5. The method of claim 4, wherein the calculation of the water layer with the temperature of interest is specifically as follows: from Z₁Traverse n water layers to Z_nIf the temperature T corresponds to the ith water layer_iSatisfy T_min≤T_i≤T_maxThen the depth value Z is set_iAdding the index of the water layer to the end of the Depth vector, and adding the index i of the water layer to the end of the Level vector, wherein the expression is as follows:

If T_i≤T_maxand T_i≥T_minthen{Depth.append(Z_i)；Level.append(i)}

the Depth vector is a water layer Depth vector which records/identifies all the satisfied conditions, and the Level vector is a water layer label vector which records/identifies all the satisfied conditions; and the first element value and the last element value of the Depth vector and the Level vector are identification results of the water layer with the temperature of interest.

6. The method of claim 4, wherein the thermocline calculation is specifically: from Z₁Go over and overRun n water layers to Z_nVertical temperature gradient VTG of the ith aqueous layer_iThe expression is as follows:

if VTG_i≥VTG_thermoclineThen the depth value Z is set_iAdding to the end of the Thermocline vector, the expression is:

If VTG_i≥VTG_thermoclinethen Thermocline.append(Z_i)

wherein, VTG_thermoclineJudging a critical value for a Thermocline, wherein the Thermocline vector is a water layer depth vector which records/identifies all conditions meeting the Thermocline;

the length of the Thermocline vector is expressed as Length (Thermocline), and the Length (Thermocline) is used for recording the number of water layers meeting the Thermocline condition; the first element value of the Thermocline vector is the upper bound depth of a Thermocline, and the lower bound depth of the Thermocline is represented by a Thermocline [ length (Thermocline) ].

7. The method of claim 6, wherein the thickness of the thermocline is the difference between the lower bound depth and the upper bound depth of the thermocline; when the depth Z of the n layers of water bodies₁,Z₂,......,Z_nThe interval thickness of adjacent water layers satisfies the expression:

Z₂-Z₁＝Z₃-Z₂＝...＝Z_n+1-Z_n＝Z^*

wherein Z is^*Constant, the thickness of the thermocline is expressed as Length (Thermocline) Z^*。

8. The method of claim 6, wherein the VTG determines the water layer where the temperature of interest is and identifies the thermocline_thermoclineIs set to 0.05 ℃/m.

Technical Field

The invention relates to the technical field of information service of oceans and fisheries, in particular to a device and a method for judging a water layer where an interested temperature is located and identifying a thermocline.

Background

China is a large country in marine fishery, the ocean fishery is developed continuously and rapidly since 1985, and the number of operating ships and the fishing yield are in the forefront of the world. Further development of the ocean fishery faces the ecological requirements of resource sustainability and the management pressure of responsible fishing. Meanwhile, China is also a breeding big country, the yield accounts for about three fifths of the aquaculture yield in the world, and the aquaculture development of China is under pressure in various aspects such as ecological environment, water and soil resources, development space and the like. Deep open sea farming is considered as a potential fishery growth mode, so that biological farming under controlled conditions by utilizing a sea area from 3 to 200 seas from the shore is gradually becoming a main space expansion direction for fishery development.

The fish is very sensitive to temperature, and generally, the economic fishes in the ocean have a certain temperature range and optimum temperature, namely characteristic temperature values. According to the size of the suitable temperature range, the fish can be classified into wide-temperature fish and narrow-temperature fish. The SST of the satellite remote sensing inversion is a sea surface temperature field, the analysis of the fish farm of the upper layer in the range of the mixing layer is accurate, and large errors can be caused to the fishes of the middle layer and the bottom layer. In addition, the suitable temperature range or the optimum temperature of different life stages of the fish is different, and the difference of each life history stage of the fish is noticed when marine fishery resource analysis is carried out.

The deep blue fishery form represented by the fully-submersible deep sea net cage or the aquaculture ship directly utilizes water below the surface layer of the ocean or needs water to be taken from the surface layer of the ocean and different depths below the surface layer of the ocean. The fully submerged deep sea cage culture is implemented by directly sinking the culture cage to a cold water mass below an ocean thermocline; the cultivation ship can use the power system to place itself in the area with proper surface seawater temperature, and can extract seawater with proper temperature for cultivating fish from water layers with different depth for cultivation when the upper seawater temperature is higher than the temperature for cultivating fish, besides, the floating or submerged net cage dragged around can be influenced by the temperature change of the surface seawater and the lower seawater. For tuna longline fishing, the water temperature of the sub-surface layer is an important parameter for judging the depth of a fishing ground, the depth of a thermocline is judged through profile data, the tuna stays in deep water below the surface layer for most of time, and the perching depth of the tuna can be estimated by knowing the depth of the thermocline.

For environmental monitoring below the surface of the ocean, it is usually acquired by buoy or aerial profile measurements. The Argo self-sinking buoy can automatically submerge from the sea level to the deep sea, keep the drifting state along with the deep sea, automatically float up in 10 days generally, and carry out continuous sea water section measurement at different depths by using a sensor carried by the Argo self-sinking buoy in the upward floating process. The fishery resource navigation type survey adopts a CTD thermohaline depth meter to detect, and is used for measuring three basic water physical parameters of the conductivity, the temperature and the depth of a water body. The data of these instruments are read by special software and then distinguished by specific personnel.

Disclosure of Invention

The invention aims to solve the technical problem of providing a device and a method for judging a water layer where an interested temperature is located and identifying a thermocline, which can judge the water layer where the interested temperature is located and can also judge the thermocline according to the acquired ocean temperature profile data.

The technical scheme adopted by the invention for solving the technical problems is as follows: there is provided an apparatus for determining a water layer at a temperature of interest and identifying a thermocline, comprising: the device comprises a main control unit, a data processor, a user input module, a profile measuring module, a display control device and a power supply module; the main control unit is respectively connected with the data processor, the user input module, the profile measuring module and the power supply module, and the data processor is connected with the display control device; the profile measurement module sends the acquired ocean temperature profile data to the data processor through the main control unit for processing, and finally, the processing result is displayed visually through the display control device.

The data processor is a profile temperature data processor.

The section measuring module is provided with a section measuring device and a data exchange interface; the profile measuring device is used for acquiring ocean temperature profile data, and the data exchange interface is connected with the main control unit and used for transmitting the ocean temperature profile data to the main control unit.

The invention also relates to a method for judging the water layer where the temperature of interest is located and identifying the thermocline, and the device for judging the water layer where the temperature of interest is located and identifying the thermocline comprises the following steps:

step (1): acquiring ocean temperature profile data measured at a fixed position by using the profile measuring module, wherein the ocean temperature profile data divides the seawater into n layers from the sea surface to the seabed, and the depth of the n layers of water is expressed as Z₁,Z₂,......,Z_nThe corresponding temperature of the depth of the n layers of water bodies is represented as T₁,T₂,......,T_n；

Step (2): according to the selection of a user, calculating a water layer where the temperature of interest is located or calculating a thermocline, wherein the calculation of the water layer where the temperature of interest is located refers to inputting an upper threshold T of the water temperature of a required section according to the temperature range required by the target fish species_maxAnd lower threshold value T of profile water temperature_minPassing through the upper threshold value T of the profile water temperature_maxAnd lower threshold value T of profile water temperature_minThe formed threshold range is searched in the obtained ocean temperature profile data, the water layer depth corresponding to the profile water temperature threshold is judged and is marked; the thermocline calculation refers to the calculation of ocean temperature profile dataAnd (5) the temperature gradient is vertical, and the thermocline is identified according to the thermocline gradient standard, so that the upper bound depth and the lower bound depth of the thermocline are obtained.

The calculation of the water layer of the temperature of interest is specifically as follows: from Z₁Traverse n water layers to Z_nIf the temperature T corresponds to the ith water layer_iSatisfy T_min≤T_i≤T_maxThen the depth value Z is set_iAdding the index of the water layer to the end of the Depth vector, and adding the index i of the water layer to the end of the Level vector, wherein the expression is as follows:

If T_i≤T_maxand T_i≥T_minthen{Depth.append(Z_i)；Level.append(i)}

the Depth vector is a water layer Depth vector which records/identifies all the satisfied conditions, and the Level vector is a water layer label vector which records/identifies all the satisfied conditions; and the first element value and the last element value of the Depth vector and the Level vector are identification results of the water layer with the temperature of interest.

The thermocline calculation specifically comprises the following steps: from Z₁Traverse n water layers to Z_nVertical temperature gradient VTG of the ith aqueous layer_iThe expression is as follows:

if VTG_i≥VTG_thermoclineThen the depth value Z is set_iAdding to the end of the Thermocline vector, the expression is:

If VTG_i≥VTG_thermoclinethen Thermocline.append(Z_i)

wherein, VTG_thermoclineJudging a critical value for a Thermocline, wherein the Thermocline vector is a water layer depth vector which records/identifies all conditions meeting the Thermocline;

the length of the Thermocline vector is expressed as Length (Thermocline), and the Length (Thermocline) is used for recording the number of water layers meeting the Thermocline condition; the first element value of the Thermocline vector is the upper bound depth of a Thermocline, and the lower bound depth of the Thermocline is represented by a Thermocline [ length (Thermocline) ].

The thickness of the thermocline is the difference between the lower bound depth and the upper bound depth of the thermocline; when the depth Z of the n layers of water bodies₁,Z₂,......,Z_nThe interval thickness of adjacent water layers satisfies the expression:

Z₂-Z₁＝Z₃-Z₂＝...＝Z_n+1-Z_n＝Z^*

wherein Z is^*Constant, the thickness of the thermocline is expressed as Length (Thermocline) Z^*。

The VTG_thermoclineIs set to 0.05 ℃/m.

Advantageous effects

Due to the adoption of the technical scheme, compared with the prior art, the invention has the following advantages and positive effects: according to the ocean temperature profile data measured by the profile measuring module, the water layer where the interesting temperature is located can be judged, the thermocline can also be judged, the equipment is simple and practical, the problem that the ocean temperature profile data are difficult to collect manually is solved, the economic cost and the labor cost are saved, and the ocean temperature profile data measuring method has better flexibility and practicability; the data processor can process the acquired ocean temperature profile data, and the processing result can provide technical support for the decision of water taking depth and ditch descending depth in-situ offshore breeding or catching operation, so that artificial judgment errors are avoided, the requirements of ocean production, breeding and scientific research exploration are met, and the information service level of ocean fishery is improved.

Drawings

FIG. 1 is a diagram showing the structure of an apparatus according to an embodiment of the present invention;

FIG. 2 is a flow diagram of business logic for an embodiment of the present invention;

FIG. 3 is a visualization display of a display control device for determining a water layer in which a temperature of interest is located according to an embodiment of the present invention;

fig. 4 is a visual display diagram of a display control device for identifying a thermocline in an embodiment of the present invention.

The figure is as follows: 100. the system comprises a main control unit, 120, a section measuring module, 121, a section measuring device, 122, a data exchange interface, 130, a user input module, 140, a power supply module, 150, a data processor, 151, a water layer identification module of interested temperature, 152, a thermocline calculating module, 160 and a display control device.

Detailed Description

The invention will be further illustrated with reference to the following specific examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Further, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teaching of the present invention, and such equivalents may fall within the scope of the present invention as defined in the appended claims.

An embodiment of the present invention relates to an apparatus for determining a water layer in which a temperature of interest is located and identifying a thermocline, and as shown in fig. 1, is an apparatus configuration diagram of an embodiment of the present invention, including: the system comprises a main control unit 100, a data processor 150, a user input module 130, a profile measuring module 120, a display control device 160 and a power supply module 140, wherein the profile measuring module 120 is provided with a profile measuring device 121 and a data exchange interface 122.

Further, the data processor 150 in this embodiment is a profile temperature data processor for processing the acquired ocean temperature profile data, and the profile temperature data processor in this embodiment includes two Freescale series single-chip microcomputers, one of which is used as the interested temperature water layer identification module 151 to realize the identification function of the water layer where the temperature required by the target fish species is located, and the other is used as the thermocline calculation module 152 to realize the function of determining the thermocline.

The invention is further illustrated by the following specific embodiments:

as shown in fig. 2, which is a flow chart of the business logic of the embodiment of the present invention, with the support of the power supply module 140, the main control unit 100 obtains the ocean temperature profile data measured at the location of the fishing boat or the offshore aquaculture facility from the profile measuring device 121 through the data exchange interface 122; drawing the ocean temperature profile data according to the actual requirement, which comprises the following steps: according to the selection of the user, performing water layer calculation or thermocline calculation of the temperature of interest, wherein the water layer calculation of the temperature of interest refers to sending an upper threshold value and a lower threshold value of the water temperature required by the target fish species to the main control unit 100 through the user input module 130; the profile temperature data processor can search in the ocean temperature profile data according to the water temperature upper and lower bound threshold range (critical threshold values at two ends of the temperature range) determined by the user, judge the water layer depth corresponding to the water temperature threshold value and give an identification, namely, the higher the water temperature is, the shallower the water layer is, the lower the water temperature is, the deeper the water layer is, identify the water layer depth corresponding to the critical threshold value at two ends of the temperature range, and visually express the ocean temperature profile data and the identification result on the display control device 160 at the same time; or, the thermocline calculation means that the profile temperature data processor directly calculates the vertical temperature gradient of the ocean temperature profile data, and obtains the upper bound depth and the lower bound depth of the thermocline according to the thermocline gradient standard, specifically: by calculating the vertical temperature gradient of the ocean temperature profile data, the water layer with rapidly reduced water temperature below the mixed layer (the part with more stable temperature change) is judged, the part is the thermocline, and the upper and lower boundary depths of the water layer with the profile water temperature suddenly changed are identified. The identified upper and lower boundary depths of the thermocline are visually represented on the display control device 160 together with the ocean temperature profile data.

In the present embodiment, the display control device 160 employs a monochrome black and white liquid crystal display, fig. 3 is a visual display diagram of the display control device 160 according to the embodiment of the present invention with respect to the depth of the water layer where the temperature of interest is located, fig. 4 is a visual display diagram of the display control device 160 according to the embodiment of the present invention with respect to the depth of the upper and lower boundaries of the thermocline, and the display control device 160 according to the embodiment of the present invention may further display the acquired ocean temperature profile data.

The specific steps of the embodiment are as follows:

(1) with the support of the power supply module 140, the main control unit 100 acquires the ocean temperature profile data measured at the location of the fishing vessel or the offshore farming facility from the ocean profile measuring device 121 through the data exchange interface 122.

(2) According to the actual situation, the user can select to identify the water layer where the temperature of interest is located or directly identify the thermocline, and when the user needs to identify the water layer where the temperature of interest is located, the upper threshold and the lower threshold of the water temperature needed by the target fish are input through the user input module 130; when the user needs to identify the thermocline, the calculation is performed directly by the thermocline calculation module 152 in the profile temperature data processor.

When the user needs to identify the water layer where the temperature of interest is located, an interested temperature water layer identification module 151 in the profile temperature data processor searches in the ocean temperature profile data according to the water temperature upper and lower bound threshold range determined by the user, judges the water layer depth corresponding to the water temperature threshold and gives an identification; as shown in fig. 3, in the present embodiment, taking salmon in a cold water fish as an example, the suitable temperature of the salmon is between 10 ℃ and 15 ℃, and the user determines the upper threshold T of the interested temperature range_maxAt 15 ℃ and a lower threshold value T_minAt 10 deg.c, the corresponding depths are determined to be 180 meters and 260 meters, respectively, and the ocean temperature profile data and the identification results are visually expressed on the display control device 160 at the same time.

When the user needs to identify the thermocline, a thermocline calculating module 152 in the profile temperature data processor can calculate the vertical temperature gradient of the ocean temperature profile data, identify the thermocline at the position of the fishing boat or the offshore culture facility according to the thermocline gradient standard, and obtain the upper bound depth and the lower bound depth of the thermocline; as shown in fig. 4, the upper bound depth in this embodiment is 82 meters, and the lower bound depth is 228 meters, that is, the thermocline is between 82 meters and 228 meters, and the final result is visually represented on the display control device 160.

The embodiment of the invention also provides a method for judging the water layer where the temperature of interest is located and identifying the thermocline, which comprises the following specific steps:

step (1): obtaining ocean temperature profile data measured at a fixed position by using the device for judging the water layer where the ocean profile temperature is located and the device for identifying the thermocline, wherein the ocean temperature profile data divides the seawater into n layers from the sea surface to the sea bottom, and the depth of the n layers of water is expressed as Z₁,Z₂,......,Z_nN is said nThe corresponding temperature of the depth of the layer water body is denoted as T₁,T₂,......,T_n。

Step (2): according to the selection of a user, calculating a water layer where the temperature of interest is located or calculating a thermocline, wherein the calculation of the water layer where the temperature of interest is located refers to inputting an upper threshold T of the water temperature of a required section according to the temperature range required by the target fish species_maxAnd lower threshold value T of profile water temperature_minPassing through the upper threshold value T of the profile water temperature_maxAnd lower threshold value T of profile water temperature_minThe formed threshold range is searched in the obtained ocean temperature profile data, the water layer depth corresponding to the profile water temperature threshold is judged and is marked; and the thermocline calculation refers to calculating the vertical temperature gradient of the ocean temperature profile data, identifying the thermocline according to the thermocline gradient standard and acquiring the upper bound depth and the lower bound depth of the thermocline.

Further, the calculation of the water layer where the temperature of interest is located is specifically as follows: from Z₁Traverse n water layers to Z_nAnd judging the temperature T corresponding to the ith water layer_iWhether or not it is at T_maxAnd T_minIn between, i.e. T_iWhether or not T is satisfied_min≤T_i≤T_maxIf the condition is satisfied, the depth value Z is set_iAdding the index of the water layer to the end of the Depth vector, and adding the index i of the water layer to the end of the Level vector, wherein the expression is as follows:

If T_i≤T_maxand T_i≥T_minthen{Depth.append(Z_i)；Level.append(i)}

the Depth vector is a water layer Depth vector which records/identifies all the satisfied conditions, and the Level vector is a water layer label vector which records/identifies all the satisfied conditions; and the first element value and the last element value of the Depth vector and the Level vector are identification results of the water layer with the temperature of interest.

Further, the thermocline calculation specifically includes: from Z₁Traverse n water layers to Z_nVertical temperature gradient VTG of the ith aqueous layer_iThe expression (Vertical Thermal Gradient) is:

judging the VTG of the current i water layer_iWhether it is greater than the critical value VTG for determining thermocline_thermoclineIf VTG_i≥VTG_thermoclineIf true, the depth value Z is determined_iAdding to the end of the Thermocline vector, the expression is:

If VTG_i≥VTG_thermoclinethen Thermocline.append(Z_i)

wherein, VTG_thermoclineJudging a critical value for a Thermocline, wherein the Thermocline vector is a water layer depth vector which records/identifies all conditions meeting the Thermocline; the length of the Thermocline vector is expressed as Length (Thermocline), and the Length (Thermocline) is used for recording the number of water layers meeting the Thermocline condition; the first element value of the Thermocline vector is the upper bound depth of a Thermocline, and the Thermocline [ Length (Thermocline) ]is used]The vector represents the lower bound depth of the thermocline.

Further, the thickness of the thermocline is the difference between the lower bound depth and the upper bound depth of the thermocline; when the depth Z of the n layers of water bodies₁,Z₂,......,Z_nThe interval thickness of adjacent water layers is the same, namely the expression is satisfied:

Z₂-Z₁＝Z₃-Z₂＝...＝Z_n+1-Z_n＝Z^*

wherein Z^*Constant, the thickness of the thermocline is expressed as Length (Thermocline) Z^*。

In the present embodiment, the VTG_thermoclineIs set to 0.05 ℃/m.

And (3): the identification result of the water layer where the temperature of interest is located or the thermocline identification result, and the ocean temperature profile data are visually expressed on the display control device 160.

Therefore, the method can be used for distinguishing the water layer and the thermocline where the temperature of interest is located, the equipment is simple and easy to operate, the method has better practicability and flexibility, the requirements of ocean production, cultivation and scientific research exploration can be met, and the information service level of ocean fishery is improved.