{"help": "https://data.gov.au/data/api/3/action/help_show?name=package_show", "success": true, "result": {"archived": false, "author_email": null, "contact_point": "metadata@aad.gov.au", "creator_user_id": "c2fbbe4a-4ba0-4945-808b-67454605a4cf", "duplicate_score": 1, "geospatial_topic": [], "id": "a7fb7a60-ed47-47d3-ae0d-662d1e9284f0", "isopen": false, "language": "eng", "license_id": "notspecified", "license_title": "notspecified", "maintainer": null, "maintainer_email": null, "metadata_created": "2025-06-23T07:17:38.029447", "metadata_modified": "2025-06-23T07:17:38.029454", "name": "through-ice-communication-by-weddell-seals-may-not-be-practicable", "notes": "Possible communication between territorial male Weddell seals (Leptonychotes weddellii) under the ice with females on the ice was investigated.  In-air and underwater recordings of underwater calls were made at three locations near Davis, Antarctica.  Most underwater calls were not detectable in air, often because of wind noise.  In-air call amplitudes of detectable calls ranged from 32-74 dB re. 20 microPa at 86 Hz down to 4-38 dB re. 20 microPa at 3.6 kHz. Most of these would be audible to humans.  Only 26 of 582 amplitude measurements (from 230 calls) ranged from 5 dB to a maximum of 15 dB above the minimum harbour-seal (Phoca vitulina) in-air detection threshold.  Seals on the ice could likely hear a few very loud underwater calls but only if the caller was nearby and there were no wind noises.  The low detectability of underwater calls in air likely precludes effective communication between underwater seals and those on the ice.\nSee other metadata records and datasets associated with ASAC project 2122 (ASAC_2122) for further information.\nThe fields in this dataset are:\nColumn A: G = grunt, T = trill, CT = constant freq. trill, O = tone, C = chug, AW = ascending whistle, DW = descending whistle, L = growl, R - roar\nColumn B:  frequency (Hz)\nColumn C: underwater call level NOTE dB re 20 uPa\nColumn D: in-air call level  dB re 20 uPa\nColumn E: in-air background noise level at this frequency dB re 20 uPa\nColumn F: water - air difference dB\nColumn G: location, 1-3, see paper for code\nColumn H: seal in-air threshold  dB re 20 uPa\nColumn I: human in-air threshold dB re 20 uPa\nColumn J: seal in-air threshold at this frequency  dB re 20 uPa", "num_resources": 4, "num_tags": 23, "organization": {"id": "0143757a-86ab-43e4-bba6-4a3a2a02b6c4", "name": "australian-ocean-data-network", "title": "Australian Ocean Data Network", "type": "organization", "description": "Harvester for Australian Ocean Data Network", "image_url": "", "created": "2025-06-23T12:29:10.320926", "is_organization": true, "approval_status": "approved", "state": "active"}, "original_harvest_source": {"site_url": "https://catalogue.aodn.org.au", "href": "https://catalogue.aodn.org.au/geonetwork/srv/eng/csw/dataset/through-ice-communication-by-weddell-seals-may-not-be-practicable", "title": "Australian Oceans Data Network"}, "owner_org": "0143757a-86ab-43e4-bba6-4a3a2a02b6c4", "private": false, "promotion_level": "0", "spatial": "{\"type\": \"Point\", \"coordinates\": [77.9266, -68.5699]}", "spatial_coverage": "{\"type\": \"Point\", \"coordinates\": [77.9266, -68.5699]}", "state": "active", "temporal_coverage_from": "1997-12-01 00:00:00", "temporal_coverage_to": "1997-12-08 00:00:00", "title": "Through-ice communication by Weddell seals may not be practicable", "type": "dataset", "unpublished": false, "url": null, "version": null, "resources": [{"cache_last_updated": null, "cache_url": null, "created": "2025-06-23T07:17:38.035988", "datastore_active": false, "datastore_contains_all_records_of_source_file": false, "description": "Download point for the data - vocalisation results", "format": "HTML", "hash": "", "id": "217b90e7-8124-48eb-b8ec-9f82772333b1", "last_modified": null, "metadata_modified": "2025-06-23T07:17:37.970622", "mimetype": null, "mimetype_inner": null, "name": "GET DATA", "package_id": "a7fb7a60-ed47-47d3-ae0d-662d1e9284f0", "position": 0, "resource_locator_function": "fileAccess", "resource_locator_protocol": "WWW:LINK-1.0-http--link", "resource_type": null, "size": null, "state": "active", "url": "http://data.aad.gov.au/aadc/portal/download_file.cfm?file_id=1826", "url_type": null, "zip_extract": false}, {"cache_last_updated": null, "cache_url": null, "created": "2025-06-23T07:17:38.035993", "datastore_active": false, "datastore_contains_all_records_of_source_file": false, "description": "Public information for ASAC project 2122", "format": "HTML", "hash": "", "id": "6dfd353f-c849-4864-883e-fd674b7c1b41", "last_modified": null, "metadata_modified": "2025-06-23T07:17:37.970804", "mimetype": null, "mimetype_inner": null, "name": "PROJECT HOME PAGE", "package_id": "a7fb7a60-ed47-47d3-ae0d-662d1e9284f0", "position": 1, "resource_locator_function": "fileAccess", "resource_locator_protocol": "WWW:LINK-1.0-http--link", "resource_type": null, "size": null, "state": "active", "url": "https://projects.aad.gov.au/search_projects_results.cfm?project_no=2122", "url_type": null, "zip_extract": false}, {"cache_last_updated": null, "cache_url": null, "created": "2025-06-23T07:17:38.035994", "datastore_active": false, "datastore_contains_all_records_of_source_file": false, "description": "Citation reference for this metadata record and dataset", "format": "HTML", "hash": "", "id": "40608edc-3a13-4310-8a3b-3e124e3f553f", "last_modified": null, "metadata_modified": "2025-06-23T07:17:37.971048", "mimetype": null, "mimetype_inner": null, "name": "VIEW RELATED INFORMATION", "package_id": "a7fb7a60-ed47-47d3-ae0d-662d1e9284f0", "position": 2, "resource_locator_function": "fileAccess", "resource_locator_protocol": "WWW:LINK-1.0-http--link", "resource_type": null, "size": null, "state": "active", "url": "http://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=ASAC_2122-3", "url_type": null, "zip_extract": false}, {"cache_last_updated": null, "cache_url": null, "created": "2025-06-23T07:17:38.035996", "datastore_active": false, "datastore_contains_all_records_of_source_file": false, "description": "", "format": "PNG", "hash": "", "id": "d2e046b7-0cab-42f5-82b1-d4f5f698248e", "last_modified": null, "metadata_modified": "2025-06-23T07:17:37.971172", "mimetype": null, "mimetype_inner": null, "name": "Creative Commons by Attribution logo", "package_id": "a7fb7a60-ed47-47d3-ae0d-662d1e9284f0", "position": 3, "resource_locator_function": "", "resource_locator_protocol": "", "resource_type": null, "size": null, "state": "active", "url": "https://i.creativecommons.org/l/by/3.0/88x31.png", "url_type": null, "zip_extract": false}], "tags": [{"display_name": "AMD", "id": "dba7c99d-b0de-4b01-b166-360aff9b5053", "name": "AMD", "state": "active", "vocabulary_id": null}, {"display_name": "AMD/AU", "id": "3ea7b640-ce0e-4158-9ae0-c1b4c3467b7c", "name": "AMD/AU", "state": "active", "vocabulary_id": null}, {"display_name": "ATTRIBUTE", "id": "c4200957-9aac-4bc3-ae49-631dc05f5e5e", "name": "ATTRIBUTE", "state": "active", "vocabulary_id": null}, {"display_name": "CALL TYPE", "id": "22e1720f-118f-4a3d-9486-a468cccbb5f7", "name": "CALL TYPE", "state": "active", "vocabulary_id": null}, {"display_name": "CALLS", "id": "b39ee64b-306e-4ac1-b89c-79b107cf8553", "name": "CALLS", "state": "active", "vocabulary_id": null}, {"display_name": "CASEY", "id": "f1c9a7a6-2441-4c3c-abda-60b41897c0fd", "name": "CASEY", "state": "active", "vocabulary_id": null}, {"display_name": "CEOS", "id": "14765c9b-bc4c-4a36-a3a8-5bc635b910a9", "name": "CEOS", "state": "active", "vocabulary_id": null}, {"display_name": "CONTINENT > ANTARCTICA > Davis", "id": "b36c67fa-f81b-4a03-b651-88ed745be1f6", "name": "CONTINENT > ANTARCTICA > Davis", "state": "active", "vocabulary_id": null}, {"display_name": "DAVIS", "id": "75c0982d-7a3d-4d08-bd8c-dec23c6717ae", "name": "DAVIS", "state": "active", "vocabulary_id": null}, {"display_name": "EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > ANIMALS/VERTEBRATES", "id": "b6d28c08-bddb-4cf1-bc41-828e3710e1dd", "name": "EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > ANIMALS/VERTEBRATES", "state": "active", "vocabulary_id": null}, {"display_name": "EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > ANIMALS/VERTEBRATES > MAMMALS", "id": "608ad85e-39ce-4abd-952e-67e0822e3fc9", "name": "EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > ANIMALS/VERTEBRATES > MAMMALS", "state": "active", "vocabulary_id": null}, {"display_name": "ELEMENTS", "id": "fe931f03-eab1-4f30-b5e8-12bfd3f6bf50", "name": "ELEMENTS", "state": "active", "vocabulary_id": null}, {"display_name": "FIELD SURVEYS", "id": "8bf5758e-85a9-4d16-8174-b07ed7b770e4", "name": "FIELD SURVEYS", "state": "active", "vocabulary_id": null}, {"display_name": "FREQUENCY", "id": "2c2d6611-e2d6-45ea-9e70-e2f997b7dcb3", "name": "FREQUENCY", "state": "active", "vocabulary_id": null}, {"display_name": "GEOGRAPHIC REGION > POLAR", "id": "3bac0051-c501-49f7-80ab-1484228e2e08", "name": "GEOGRAPHIC REGION > POLAR", "state": "active", "vocabulary_id": null}, {"display_name": "HYDROPHONES", "id": "48e10e93-9423-49cb-a011-79f5d02acf15", "name": "HYDROPHONES", "state": "active", "vocabulary_id": null}, {"display_name": "LEPTONYCHOTES WEDDELLII", "id": "88cd506b-92b5-4734-9e2c-c57b46871f8e", "name": "LEPTONYCHOTES WEDDELLII", "state": "active", "vocabulary_id": null}, {"display_name": "REPETITION", "id": "2ad15867-e124-4408-b045-e5a661acb6d7", "name": "REPETITION", "state": "active", "vocabulary_id": null}, {"display_name": "TIME", "id": "3798c1cf-e301-4b29-a4c2-f76a68a06893", "name": "TIME", "state": "active", "vocabulary_id": null}, {"display_name": "TRILLS", "id": "b835ab6c-c3b9-490e-a27a-1c81285cd668", "name": "TRILLS", "state": "active", "vocabulary_id": null}, {"display_name": "UNDERWATER", "id": "a66d397e-b262-429c-8f6c-ef8f52feb2dc", "name": "UNDERWATER", "state": "active", "vocabulary_id": null}, {"display_name": "VOCALISATIONS", "id": "eab95e98-918e-4163-ba08-306292f2c4f6", "name": "VOCALISATIONS", "state": "active", "vocabulary_id": null}, {"display_name": "WEDDELL SEALS", "id": "0f6c43f2-125d-419e-830a-52df4ab013dc", "name": "WEDDELL SEALS", "state": "active", "vocabulary_id": null}], "groups": [], "relationships_as_subject": [], "relationships_as_object": [], "extras": [{"key": "harvest_object_id", "value": "da1ec79b-b45d-4bcc-893d-6b311c05afb7"}, {"key": "harvest_source_id", "value": "a2216e59-91ec-48b1-83cc-d35d9f09fcec"}, {"key": "harvest_source_title", "value": "Australian Oceans Data Network"}]}}