{
  "schema": "https://www.fdsn.org/schemas/DAS-Metadata-FDSN/2.0",
  "version": "2.0",
  "cables": [
    {
      "cable_bounding_box": [
        0.0,
        0.0,
        0.0,
        0.0
      ],
      "cable_characteristics": "Dark Telecommunication fiber",
      "cable_environment": "In conduit at approx. 1m depth over most of the trajectory.",
      "cable_id": "cable01",
      "cable_owner": "",
      "fibers": [
        {
          "fiber_id": "fiber01",
          "fiber_geometry": "",
          "fiber_mode": "single-mode",
          "fiber_optical_length": 18580.0,
          "fiber_optical_length_unit": "meters",
          "fiber_refraction_index": 1.4681
        }
      ]
    }
  ],
  "comment": "",
  "country": "TUR",
  "digital_object_identifier": "doi:10.12686/SED/NETWORKS/ZQ_2023",
  "end_date": "2023-02-28",
  "funding_agency": "Eidgenössische Technische Hochschule Zürich",
  "interrogators": [
    {
      "acquisitions": [
        {
          "acquisition_end_time": "2023-03-13T00:00:00Z",
          "acquisition_id": "acqui01",
          "acquisition_sample_rate": 100.0,
          "acquisition_sample_rate_unit": "Hertz",
          "acquisition_start_time": "2023-02-03T00:00:00Z",
         
          "comment": "The interrogator is a Silixa iDAS, with 10m gauge length. We provide ~16m channels spacing at 100Hz. Format is HDF5, based initially on the native Silixa PRODML2.1 standard (with some unnecessary/proprietary headers removed and others added)",
          "gauge_length": 10.0,
          "gauge_length_unit": "meter",
          "number_of_channels": 416,
          "spatial_sampling_interval": 17.53857089542295,
          "spatial_sampling_interval_unit": "meter",
          "unit_of_measure": "nanostrain-rate"
        }
      ],
      "interrogator_id": "21002",
      "manufacturer": "SILIXA",
      "model": "iDAS"
    }
  ],
  "location": "Urban fiber along the Sea of Marmara, on the Asian half of Istanbul",
  "network_code": "ZQ2023",
  "point_of_contact": "Daniel C. Bowden",
  "point_of_contact_address": "ETH Zurich, 8092 Zurich, Switzerland",
  "point_of_contact_email": "daniel.bowden@eaps.ethz.ch",
  "principal_investigator": [
    {
      "address": "ETH Zurich, 8092 Zurich, Switzerland",
      "email": "daniel.bowden@erdw.ethz.ch",
      "name": "Bowden, Daniel C."
    },
    {
      "address": "ETH Zurich, 8092 Zurich, Switzerland",
      "email": "",
      "name": "Fichtner, Andreas"
    },
    {
      "address": "ETH Zurich, 8092 Zurich, Switzerland",
      "email": "",
      "name": "Shaikhsulaiman, Ali"
    },
    {
      "address": "Kandili Observatory, Istanbul, Turkiye",
      "email": "",
      "name": "Konca, Ozgun"
    },
    {
      "address": "Kandili Observatory, Istanbul, Turkiye",
      "email": "",
      "name": "Ergintav, Semih"
    },
    {
      "address": "Istanbul Municipality, Istanbul, Turkiye",
      "email": "",
      "name": "Kalkan Ertan, Esra"
    },
    {
      "address": "Istanbul Municipality, Istanbul, Turkiye",
      "email": "",
      "name": "Yavuz, Evrim"
    },
    {
      "address": "Colrado School of Mines, Golden CO, United States of America",
      "email": "",
      "name": "Bozdag, Ebru"
    }
  ],
  "purpose_of_data_collection": "Global DAS month teleseismic events",
  "start_date": "2023-02-01"
}