Quantitative tectonic reconstructions of Zealandia based on crustal thickness estimates

Estimates of Martian crustal thickness from viscous relaxation of topography

Isosta.tica,lly compensated crusta,1 thickness variations and associated topographic contrasts a,t the surface of a planet result in lateral pressure gradients, which may cause the lower crust to flow and reduce the relief. Areas of thicker crust are genera, lly associated with more rapid relaxation of topography. On Mars, topographic features such as impa, ct basins a, nd the hemispheric dicho...

Plate tectonic reconstructions with continuously closing plates

We present a new algorithm for modeling a self-consistent set of global plate polygons. Each plate polygon is composed of a finite list of plate margins, all with different Euler poles. We introduce a "Continuously Closed Plate" (CCP), such that, as each margin moves independently, the plate polygon remains closed geometrically as a function of time. This method solves emerging needs in computa...

Tectonic reconstructions for paleobathymetry in Drake Passage

Admittance estimates of mean crustal thickness and density at the Martian hemispheric dichotomy

[1] Admittance estimates from line-of-sight (LOS) acceleration profiles of the Mars Global Surveyor spacecraft are used to constrain the mean crustal thickness and surface density centered on the hemispheric dichotomy, from 110 E to 220 E, 40 S to 20 N. Models with uniform crustal properties predict lower than expected bulk crustal densities. Two-layer models with loading only at the surface an...

study of hash functions based on chaotic maps

توابع درهم نقش بسیار مهم در سیستم های رمزنگاری و پروتکل های امنیتی دارند. در سیستم های رمزنگاری برای دستیابی به احراز درستی و اصالت داده دو روش مورد استفاده قرار می گیرند که عبارتند از توابع رمزنگاری کلیددار و توابع درهم ساز. توابع درهم ساز، توابعی هستند که هر متن با طول دلخواه را به دنباله ای با طول ثابت تبدیل می کنند. از جمله پرکاربردترین و معروف ترین توابع درهم می توان توابع درهم ساز md4, md...