میدان مغناطیسی
type: Concept
preferred label: magnetic field @en
related: وردش

متغیر زمانی
type: Concept
preferred label: time variation @en
related: وردش

وردش‌سنج
type: Concept
preferred label: variometer @en
related: وردش

وردش فصلی
type: Concept
preferred label: seasonal variation @en
related: وردش

وردش سالانه
type: Concept
preferred label: annual variation @en
related: وردش

وردش دیرپا
type: Concept
preferred label: secular variation @en
related: وردش

وردش
type: Concept
alternative label: تعییر
preferred label: variation @en
related: افت و خیز
related: متغیر زمانی
related: تنوع فضایی
related: وردش سالانه
related: تغییر روزانه
related: وردش فصلی
related: میدان مغناطیسی
related: وردش دیرپا
related: وردش‌سنج

تنوع فضایی
type: Concept
preferred label: spatial variation @en
related: وردش

تغییر روزانه
type: Concept
preferred label: diurnal variation @en
related: وردش

افت و خیز
type: Concept
preferred label: fluctuation @en
related: وردش