a return period

USAGE SUMMARY

The phrase "a return period" is correct and usable in written English.
It can be used in contexts related to finance, insurance, or environmental studies, referring to the time interval between events, such as the recurrence of a specific event or the time taken for an investment to pay back. Example: "The return period for this investment is estimated to be five years, after which we expect to see significant profits."

✓ Grammatically correct

Science

News & Media

Human-verified examples from authoritative sources

Exact Expressions

60 human-written examples

That has a return period of about one in 100 to one in 200 years," said Mark Gibbs, head of space weather at the Met Office.

Independent

This has a return period of 2475 years.

International Journal of Advanced Structural Engineering

They correspond to a scenario for a return period of 100 years.

Earth, Planets and Space

The impacts of handling smaller events with a return period of up to 0.2 years and extreme events with a return period of up to 100 years are lower in both alternatives.

Water Research

They are designed to withstand extreme level of earthquake loading with a return period of 10,000 years.

Nuclear Engineering and Design

Results are presented for some cases of bridge loading, compared to a return period approach and significant differences identified.

Structural Safety

By including TC Tomas, a return period of 40 45 years is established for major HEMI events since 1650 AD.

Geoscience Letters

The open arrows show the computed inundation limits by waves with a return period of 50 years.

Earth, Planets and Space

The numerical results suggest that under extreme conditions with a return period of 100 years, the bridge horizontal response is dominant and governed by the low-frequency modes.

Journal of Wind Engineering and Industrial Aerodynamics

The 2009 2010 drought, which has a return period of about 94 years, is the most severe one in Southwest China during the period of 1961 2012.

Journal of Hydrology

However, the event was not anomalous with respect to the entire 373 year record and had a return period of approximately 6 years.

Journal of Hydrology

Expert writing Tips

Best practice

When discussing risk assessment or event planning, clearly specify the units of time (e.g., years, decades) associated with "a return period" to avoid ambiguity and ensure proper understanding of the likelihood of the event.

Common error

Avoid assuming that an event with "a return period" of 100 years will not occur more than once within a century. The return period is a statistical average, not a fixed schedule; multiple such events can happen within a shorter timeframe.

Linguistic Context

A return period functions as a noun phrase that quantifies the average interval between occurrences of a specific event. It's frequently used in statistical analysis and risk assessment, as supported by Ludwig's examples.

Expression frequency: Very common

Frequent in

Science

86%

News & Media

12%

Formal & Business

2%

Less common in

Academia

0%

Encyclopedias

0%

Wiki

0%

Ludwig's WRAP-UP

In summary, "a return period" is a commonly used noun phrase, particularly within scientific and news-related contexts, to express the average time between occurrences of specific events. As confirmed by Ludwig AI, the phrase is grammatically correct and serves to quantify event frequency, supporting risk assessment and planning strategies. While synonymous with terms like "recurrence interval", it's crucial to remember that "a return period" represents a statistical average, not a guarantee of when an event will next occur. Best practice involves specifying units of time to avoid ambiguity.

More alternative expressions

Phrases that express similar concepts, ordered by semantic similarity:

recurrence interval

Focuses on the time interval between recurring events rather than the statistical expectation.

frequency of occurrence

Emphasizes how often an event happens within a given timeframe.

probability of exceedance

Highlights the likelihood that a certain threshold will be surpassed.

expected frequency

Refers to the anticipated rate at which an event is likely to occur.

average recurrence

Indicates the average time between instances of an event.

period of recurrence

Similar to recurrence interval, but emphasizes the cyclical nature.

time between events

A more general way to describe the duration separating two events.

event frequency

A shorter, more direct way to state how often an event occurs.

recurrence rate

Indicates the speed or rate at which events recur.

return interval

A shortened version of recurrence interval, focusing on the span of time.

FAQs

How is "a return period" used in scientific contexts?

In scientific contexts, "a return period" is used to describe the average time between events such as earthquakes, floods, or storms. It helps in risk assessment and infrastructure planning, indicating the probability of an event occurring within a specific timeframe.

What does "a return period" of 100 years mean?

A "return period" of 100 years signifies that an event has a 1% chance of occurring in any given year. It doesn't mean the event will only happen once every 100 years, but rather reflects the statistical likelihood based on historical data.

How does the "recurrence interval" relate to "a return period"?

The "recurrence interval" is essentially synonymous with "a return period". Both terms refer to the estimated time between events of a similar magnitude or intensity. The terms are often used interchangeably in scientific and engineering fields.

In what fields is the concept of "a return period" most commonly used?

The concept of "a return period" is frequently used in hydrology (for floods and droughts), seismology (for earthquakes), meteorology (for storms), and finance (for investment returns). It helps assess risks and plan for future events in these fields.