isoseismic

An isoseismic map shows areas of equal earthquake intensity.

Definition

1. Noun:

   • A line on a map connecting points of equal earthquake intensity: An "isoseismic" (often used as a noun in the form "isoseismal") is a line drawn to link locations that experienced the same level of shaking during a seismic event.

2. Adjective:

   • Relating to or denoting equal earthquake intensity: The term "isoseismic" describes features, such as lines or zones, that indicate areas where the intensity of an earthquake is the same.

Usage Examples

• Noun:

  • The geologist plotted the isoseismics to show the distribution of shaking. (The lines on the map indicate equal earthquake intensity.)

• Adjective:

  • The isoseismic map helped engineers identify the most affected regions. (The map showing equal intensity zones aided in damage assessment.)

Advanced Usage

• "Isoseismic line": a specific curve on a seismic intensity map.

  • The isoseismic line for intensity VII ran through the city center. (The curve marking areas with shaking level VII passed through the urban core.)

• "Isoseismic zone": an area bounded by isoseismic lines where shaking intensity is roughly uniform.

  • Buildings in the isoseismic zone of maximum intensity suffered the worst damage. (In the region of highest equal shaking, structures were heavily impacted.)

Variants and Related Words

• Isoseismal (adj/n): a variant spelling of "isoseismic," used interchangeably.

  • The isoseismal contours were drawn based on survey data. (The lines of equal intensity were mapped from reports.)

• Isoseismicity (n): the property of having equal seismic intensity across a region.

  • The study examined the isoseismicity of historical earthquakes. (The research focused on patterns of equal shaking.)

Synonyms

• Equal-intensity line: a line of constant earthquake shaking level.
• Seismic intensity contour: a curve on a map showing points of identical ground motion.

Related Idioms