mean sea level

{
  "id": "MLC-T-ENV-016792",
  "term": "mean sea level",
  "field": "Environment",
  "definition": "The \"still water level\" (i.e., the level of the sea with high frequency motions such as wind waves averaged out); averaged over a period of time such as a month or a year, such that periodic changes in sea level (e.g., due to the tides) are also averaged out; the values of MSL are measured with respect to the level of marks on land (called benchmarks).",
  "abbreviation": "MSL",
  "subject": "Water",
  "references": [
    "Coastal Sensitivity to Sea-level Rise Glossary and Acronyms"
  ],
  "url": "https://mlchart.com/terminology/environment/mean-sea-level/"
}