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Daily folders (19) of Simrad format (.ek5) acoustic data.17 Echoview format (EV) format analysis files. Excel biological data for 42 pelagic hauls. 2 sound files for cetacean work Objectives: 1. To conduct an acoustic survey to estimate the abundance and distribution of herring in the north western North Sea and west of Scotland (ICES area VIaN) as part of the ICES International North Sea Herring Acoustic Survey. 2. To obtain samples of herring for biological analysis, including age, length, weight, sex, maturity and ichthyophonus infection. 3. To obtain samples of herring in support of the WESTHER project (biological and photographic data). 4. To collect passive acoustic data for the detection of cetaceans.
Scottish Government (Marine Scotland)
no limitations to public access
Other details | ||
Internal code | Internally assigned metadata identifier | 6200 |
Title | The title is used to provide a brief and precise description of the dataset such as 'Date', 'Originating organisation/programme', 'Location' and 'Type of survey'. All acronyms and abbreviations should be reproduced in full. | 0104H- HERAS west coast herring acoustic survey-MFV Enterprise |
Alternative title | The purpose of alternative title is to record any additional names by which the dataset may be known. | HERAS, West coast, acoustic survey , MFV Enterprise FR 365 |
File Identifier | The File Identifier is a code, preferably a GUID, that is globally unique and remains with the same metadata record even if the record is edited or transferred between portals or tools. | Marine_Scotland_FishDAC_1752 |
Resource Identifier | This is the code assigned by the data owner. | Marine_Scotland_FishDAC_1752 |
Resource type | The resource type will likely be a dataset but could also be a series (collection of datasets with a common specification) or a service. | dataset |
Start date | This describes the date the resource starts. This may only be the year if month and day are not known | 2004-07-06 |
End date | This describes the date the resource ends. This may only be the year if month and day are not known | 2004-07-25 |
Spatial resolution | This describes the spatial resolution of the dataset or the spatial limitations of the service. | 55000.00 |
Spatial resolution unit | This describes the unit of spatial resolution which for distance must be metres. | http://standards.iso.org/ittf/PubliclyAvailableStandards/ISO_19139_Schemas/resources/uom/gmxUom.xml#m |
Frequency of updates | This describes the frequency with which the resource is modified or updated i.e. a monitoring programme that samples once per year has a frequency that is described as 'annually'. | Not Planned |
Abstract | The abstract provides a clear and brief statement of the content of the resource. | Daily folders (19) of Simrad format (.ek5) acoustic data.17 Echoview format (EV) format analysis files. Excel biological data for 42 pelagic hauls. 2 sound files for cetacean work Objectives: 1. To conduct an acoustic survey to estimate the abundance and distribution of herring in the north western North Sea and west of Scotland (ICES area VIaN) as part of the ICES International North Sea Herring Acoustic Survey. 2. To obtain samples of herring for biological analysis, including age, length, weight, sex, maturity and ichthyophonus infection. 3. To obtain samples of herring in support of the WESTHER project (biological and photographic data). 4. To collect passive acoustic data for the detection of cetaceans. |
Lineage | Lineage includes the background information, history of the sources of data, data quality statements and methods. | All gear was transported to Fraserburgh on 5 July and installation was complete the same day. Scientific staff joined the vessel at 1900 on 5 July and it departed at 0400 on 6 July. A small meeting was held with all scientists, and crew taking a navigational watch, to explain the objectives of the survey and to describe general operating procedures. The vessel then proceeded to Loch Eriboll where calibration of the three transducers was carried out starting at 1300 on 6 July. The survey commenced in the North Minch at 0200 on 7 July. Zig-zag transects at a spacing of 15 nmi were adopted in the Minch. On reaching the southern limit of the Minch, transects progressed northwards along lines of latitude, at spacings of 15, 7.5 or 3.75 nautical miles (nmi). Transect spacing was based on the results of previous surveys and transects were placed relative to ICES rectangles. Transects extended as far as the shelf edge (450 m contour) to the west, and as far as safely possible to the east, on approaching the coast. A half landing took place on 16 July in Ullapool in accordance with rest provision for the working time directive and for the exchange of personnel (F Burns and C Millar for O Goudie and D Beare). All three transducers were calibrated once again in Loch Broom prior to landing. The vessel resumed surveying at 1800 on 17 July. North of the Hebrides, transects extended from the shelf edge to longitude 3° West, progressing northwards as far as 59°57’ North. The survey was completed on 24 July at 1145. The vessel returned to Fraserburgh on the morning of 25 July. All equipment was unloaded the following morning and returned to Aberdeen. Results The survey was completed successfully, with no time lost due to weather and no damage to the acoustic gear or fishing gear. The total mileage surveyed was approximately 2500 nmi with 1051 acoustic log intervals recorded, providing approximately 20 GB of data (*.ek5 files). All acoustic data were scrutinised and saved as daily Echoview (*.EV) files. Two successful calibrations were carried out, which gave consistent results to within 0.08 dB for the 38 kHz transducer. Fishing exercises were generally successful; 42 trawls were taken, of which 37 contained herring. In addition to length frequency data, a total of 2321 herring were sampled for weight, sex, maturity and otoliths. Digital photographs and associated biological samples of herring were taken for the WESTHER project: a total of 455 adults and 50 juveniles. Continuous passive acoustic recordings were made at 0.1-20 kHz and 110-150 kHz for the detection of dolphin whistles and clicks. Visual sightings of common dolphins and white beaked dolphins provided complementary data. Preliminary indications are that the amount of fish detected was in line with previous surveys. Medium sized schools of herring were detected all along the west of the Hebrides between the 100 and 200 m contours. However, unlike previous years, no significant concentrations were detected at Gallan Head and Barra Head, and very few herring were detected in the Minch. Most of the fish was concentrated in the northern half of the survey area, particularly west of Papa Bank (north west of Orkney). Herring schools were generally more diffuse than in previous years, with the exception of one extremely dense school of herring detected immediately north west of Orkney east of 4° longitude. A full stock estimate and survey report will be prepared shortly. |
Related keywords | ||
Keyword | General subject area(s) associated with the resource, uses multiple controlled vocabularies | Marine Environmental Data and Information Network |
General subject area(s) associated with the resource, uses multiple controlled vocabularies | Acoustics | |
General subject area(s) associated with the resource, uses multiple controlled vocabularies | Biota composition | |
General subject area(s) associated with the resource, uses multiple controlled vocabularies | Fish | |
General subject area(s) associated with the resource, uses multiple controlled vocabularies | Acoustic backscatter in the water column | |
General subject area(s) associated with the resource, uses multiple controlled vocabularies | Fish abundance in water bodies | |
General subject area(s) associated with the resource, uses multiple controlled vocabularies | Fish biomass in water bodies | |
General subject area(s) associated with the resource, uses multiple controlled vocabularies | Fish morphology, age and physiology | |
Geographical coverage | ||
North | The northern-most limit of the data resource in decimal degrees | 60 |
East | The eastern-most limit of the data resource in decimal degrees | -3 |
South | The southern-most limit of the data resource in decimal degrees | 55.5 |
West | The western-most limit of the data resource in decimal degrees | -10 |
Regional sea | 40E0 | |
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Responsible organisations | ||
Role | The point of contact is person or organisation with responsibility for the creation and maintenance of the metadata for the resource. | pointOfContact |
Organisation name | Scottish Government (Marine Scotland) | |
Phone | +44 (0)300 244 4000 | |
Role | The point of contact is person or organisation with responsibility for the creation and maintenance of the metadata for the resource. | pointOfContact |
Organisation name | Scottish Government (Marine Scotland) | |
Phone | +44 (0)300 244 4000 | |
Delivery point | Mailpoint 11, Area 1B South, Victoria Quay | |
Postal code | EH6 6QQ | |
City | Edinburgh | |
Country | United Kingdom | |
Role | The custodian is the person or organisation that accepts responsibility for the resource and ensures appropriate care and maintenance. If a dataset has been lodged with a Data Archive Centre for maintenance then this organisation is be entered here. | custodian |
Organisation name | Scottish Government (Marine Scotland) | |
Phone | +44 (0)300 244 4000 | |
Delivery point | Mailpoint 11, Area 1B South, Victoria Quay | |
Postal code | EH6 6QQ | |
City | Edinburgh | |
Country | United Kingdom | |
Role | The distributor is the person or organisation that distributes the resource. | distributor |
Organisation name | Scottish Government (Marine Scotland) | |
Phone | +44 (0)300 244 4000 | |
Delivery point | Mailpoint 11, Area 1B South, Victoria Quay | |
Postal code | EH6 6QQ | |
City | Edinburgh | |
Country | United Kingdom | |
Role | The originator is the person or organisation who created, collected or produced the resource. | originator |
Organisation name | University of St Andrews | |
Phone | +44 (0)1334 476161 | |
Resource locators | ||
Locator URL | Web address (URL) that links to the resource | https://www.bodc.ac.uk/data/information_and_inventories/cruise_inventory/search/ |
Locator function | Code that describes the function of the resource. ISO function code chosen from ISO 19115-1 Codelist | Reference info #0 |
Dataset constraints | ||
20 Limitations on Public Access - Access constraints | ISO restriction code chosen from ISO 19115-1 Codelist | otherRestrictions |
20 Limitations on Public Access – Other constraints | Any restriction on the use of the resource such as the need to agree to certain licence conditions. | no limitations to public access |
21 Conditions for Access and Use - Use limitation | Any restrictions imposed on accessing the resource such as the need to agree to certain licence conditions. | Open Government License (http://www.nationalarchives.gov.uk/doc/open-government-licence/) |
Version info | ||
Date of publication | The publication date of the resource or if previously unpublished the date that the resource was made publicly available via the MEDIN network. | 2016-05-09 |
Metadata date | The date when the content of this metadata record was last updated. | 2016-05-09 |
Metadata standard name | The name of the metadata standard used to create this metadata | MEDIN Discovery Metadata |
Metadata standard version | The version of the MEDIN Discovery Metadata Standard used to create the metadata record | Version 2.3.7 |
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