Definition

1. Adjective:

   • Having equal magnetic inclinations: Describes lines or points on a map that share the same angle of magnetic dip (the angle between the Earth's magnetic field lines and the horizontal plane).

2. Noun:

   • An isogram connecting points of equal magnetic inclination: A line on a map, specifically an isoclinic line, that joins all locations where the magnetic inclination (dip) is identical.

Usage Examples

• Adjective:

  • The scientist studied the isoclinal chart to understand the magnetic field's geometry.
  • These two locations are isoclinal, meaning a compass needle would dip at the same angle at both places.

• Noun:

  • The map featured a prominent isoclinal running through the continent.
  • By following the isoclinal, researchers can trace areas of consistent magnetic dip.

Advanced Usage

• "isoclinal line": A more specific term synonymous with the noun form, explicitly denoting the contour line on a map.

  • The isoclinal line for 60 degrees north was clearly marked.

• In structural geology: While the primary definition relates to geomagnetism, in geology, "isoclinal" can describe tightly folded rock layers where the two limbs are parallel. This is a specialized, context-dependent usage.

  • The geologists identified an isoclinal fold in the mountain strata.

Variants and Related Words

• Isoclinic (adjective/noun): A direct synonym. An isoclinic line is the same as an isoclinal (noun).
• Isogonal (adjective/noun): Refers to lines connecting points of equal magnetic declination (the angle between magnetic north and true north), often contrasted with isoclinal lines.
• Isogram (noun): A general term for a line on a map connecting points with equal value of a specific quantity (e.g., isobar for pressure, isotherm for temperature).

Synonyms

• Isoclinic (adj & n): Having or being an equal inclination line.
• Magnetic contour line (n, descriptive).

Related Terms and Concepts

• Magnetic inclination (Dip): The vertical angle being measured.
• Magnetic equator: The isoclinal line where the magnetic inclination is zero (the magnetic field is horizontal).
• Agonic line: An isogonal line where magnetic declination is zero.

Adjective

1. having equal magnetic inclinations

Noun

1. an isogram connecting points of equal magnetic inclination