3D analytical signal application in magnetic marine data processing for a shipwreck in the Colombian Caribbean

Authors

  • Andrés Cárdenas Contreras Universidad Distrital Francisco José de Caldas
  • Juan Carlos Acosta Chady Centro de Investigaciones Oceanográficas e Hidrográficas (CIOH)
  • José Arturo Arias Cardozo Centro de Investigaciones Oceanográficas e Hidrográficas (CIOH)
  • Alex Ferrero Ronquillo Centro de Investigaciones Oceanográficas e Hidrográficas (CIOH)
  • Sary Aived Téllez Moncada Universidad Distrital Francisco José de Caldas
  • Lina Marcela Fibra Camacho Universidad Distrital Francisco José de Caldas

DOI:

https://doi.org/10.26640/22159045.207

Keywords:

Magnetic anomalies, analytic signal, magnetometer, shipwreck

Abstract

On a cruise for magnetic data gathering, aboard the ship A.R.C “Providencia” the magnetic and bathymetric survey was carried out simultaneously within the area delimited by the geographic coordinates 10°20'50” N - 10°21'30” N latitude and 75°35'40” W- 75°36'20” W longitude, close to the Tierra Bomba island. Given the shipwreck Ex A.R.C “Pedro de Heredia” high magnetic susceptibility and with the purpose of identifying its anomalous response, two research areas were designed, a general one and a detailed one, covering an area of 2.25 km with 22 lines separated 50 m and an area of 20.08 km with 8 lines separated 20 m respectively in the North – South direction. This way, the first research cruise using the marine magnetometer Geometrics G-882 had taken place. Once the data had been gathered, the magnetic anomaly charts were obtained to which the corresponding corrections for daytime variation and regional anomaly to model IGRF 2005 were made. Since the purpose of the Research was to identify the anomaly source, in the data processing, the 3D analytical signal technique was used, for the values of the total magnetic field anomalies, whose results show accurately the location and depth of the shipwreck, showing that this method permits the identification of the magnetic source as well as discriminating it from other geo-forms obtained through bathymetry.

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Author Biographies

  • Andrés Cárdenas Contreras, Universidad Distrital Francisco José de Caldas

    Universidad Distrital Francisco José de Caldas. Proyecto Curricular de Ingeniería Catastral y Geodesia.

  • Juan Carlos Acosta Chady, Centro de Investigaciones Oceanográficas e Hidrográficas (CIOH)

    Centro de Investigaciones Oceanográficas e Hidrográficas - CIOH

  • José Arturo Arias Cardozo, Centro de Investigaciones Oceanográficas e Hidrográficas (CIOH)

    Centro de Investigaciones Oceanográficas e Hidrográficas - CIOH

  • Alex Ferrero Ronquillo, Centro de Investigaciones Oceanográficas e Hidrográficas (CIOH)

    Centro de Investigaciones Oceanográficas e Hidrográficas - CIOH

  • Sary Aived Téllez Moncada, Universidad Distrital Francisco José de Caldas

    Universidad Distrital Francisco José de Caldas

  • Lina Marcela Fibra Camacho, Universidad Distrital Francisco José de Caldas

    Universidad Distrital Francisco José de Caldas

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Published

2009-12-05

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Section

RESEARCH ARTICLE

How to Cite

3D analytical signal application in magnetic marine data processing for a shipwreck in the Colombian Caribbean. (2009). CIOH Scientific Bulletin, 27, 145-155. https://doi.org/10.26640/22159045.207

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