MHB Flood Frequency & Return Interval: 100-Year Analysis

AI Thread Summary
Flood frequency can be calculated by dividing the number of floods by the total years of record, resulting in a frequency of 5 floods per 100 years, or 1 flood every 20 years on average. However, this average does not guarantee that floods will occur at regular intervals. The return interval is a statistical estimate and can vary significantly over time. Therefore, while the average suggests a flood every 20 years, actual occurrences may differ. Understanding these concepts is crucial for effective flood risk management.
Varanus
Messages
1
Reaction score
0
if in 100 years of records you have had floods in five of those years is the flood frequency 5 per 100 years ?

and would the flood return interval be every 20 years?
 
Mathematics news on Phys.org
Yes, the frequency is 5/100= 1/20 years per flood. There will be an average of one flood every 20 year but that is only an average.
 

Thread 'Non-orthogonal bases'

Suppose ,instead of the usual x,y coordinate system with an I basis vector along the x -axis and a corresponding j basis vector along the y-axis we instead have a different pair of basis vectors ,call them e and f along their respective axes. I have seen that this is an important subject in maths My question is what physical applications does such a model apply to? I am asking here because I have devoted quite a lot of time in the past to understanding convectors and the dual...
View full post »

Thread 'Fermat's Last Theorem'

Fermat's Last Theorem has long been one of the most famous mathematical problems, and is now one of the most famous theorems. It simply states that the equation $$ a^n+b^n=c^n $$ has no solutions with positive integers if ##n>2.## It was named after Pierre de Fermat (1607-1665). The problem itself stems from the book Arithmetica by Diophantus of Alexandria. It gained popularity because Fermat noted in his copy "Cubum autem in duos cubos, aut quadratoquadratum in duos quadratoquadratos, et...
View full post »

Thread 'What Exactly is Dirac’s Delta Function? - Insight'

Insights auto threads is broken atm, so I'm manually creating these for new Insight articles. In Dirac’s Principles of Quantum Mechanics published in 1930 he introduced a “convenient notation” he referred to as a “delta function” which he treated as a continuum analog to the discrete Kronecker delta. The Kronecker delta is simply the indexed components of the identity operator in matrix algebra Source: https://www.physicsforums.com/insights/what-exactly-is-diracs-delta-function/ by...
View full post »

Similar threads

Dam Failures and Infrastructure Damage in a Changing Environment
Replies
8
Views
4K
MHB Calc Male & Female Cattle Pop Growth Rates: 30 Heifers, 100% Fert/Surv
Replies
1
Views
2K
I Please discuss discrete Fourier analysis
Replies
12
Views
2K
I Can you turn investment in a lottery from subjective to objective?
Replies
45
Views
5K
Can You Provide Guidance on Obtaining a Hydrograph by Return Flood?
Replies
2
Views
2K
MHB How Much Would I Earn If I Worked 4 Weeks On and 4 Weeks Off?
Replies
2
Views
1K
B The Paradox of 1 – 1 + 1 – 1 + 1 – 1 + …
Replies
5
Views
2K
Is my understanding of the Nyquist theorem correct?
Replies
4
Views
2K
MHB Population formula part 1: Birth
Replies
2
Views
2K
Random Vibration Fatigue Analysis
Replies
4
Views
2K

Hot Threads

Recent Insights

Back
Top