Hello! I am Hongyu Xiao, a Ph.D recently graduated from the University of Illinois at Urbana-Champaign studying seismology and tectonics
My research focuses on the crust morphology of the Midcontinent (commonly known as the Midwest) in the United States. Though it may look flat on the ground level, the deeper part in the crust showed great variations. I am trying to understand this a bit more
I love plants,outdoor sports and food tryout! Seafood and city hiking are crucial to me. Lucky for me, the Midwest is also a great place to enjoy life with beautiful nature. Click this to check it out!
Illinois Basin / Michigan Basin / Midcontinent / The United States
Receiver function analysis
Receiver functions (RF) are time series computed from three-component seismic timeseries, and they indicate the Earth structure near the station (receiver) [Langston et al 1978].
The H-κ-c method is a generalized receiver function method with harmony corrections on P to S converted phases and the corresponding crustal multiples, essentially improving the estimates of crustal thickness (H) and the ratio of P to S velocity (Vp/Vs ratio, κ) [Li et al JGR 2018].
Illinois Basin / Central Midcontinent / The United States
Ambient Noise tomography
Ambient noise tomography (ANT for short) is a seismic imaging method using coherent signals extracted from seismic ambient noise records to construct tomography of the earth interior. By calculating cross-correlation of noise signals, we could recover the coherent surface wave signals hidden in the noise records which is called Empirical Green’s Function.
Illinois Basin / Central Midcontinent / The United States
Joint inversion tomography
Ambient nnoise imaging is sensitive to velocity structures however lack of the power to detect sharp discontinuity/large impedance contrast. Receiver function is sensitive to large impedance contrast however unable to track velocity structure.
The joint inversion could overcome the potential tradeoffs during inversion processes. The tomography model provides very detailed shear velocity structures in central midcontinent.
Working with Dr.Xiaodong Song at University of Illinois Urbana-Champaign (UIUC). Dr.Xiaodong Song is currently at Peking University as Chair Professor of School of earth and space sciences now
My research projects were about the lithosphere morphology and the seismic velocity structure of the midcontinent in the United States
Worked with Dr.Douglas R. MacAyeal at University of Chicago in Hyde Park.
My research project was a multiple-layer neural network (a.k.a machine learning) model for Early Earthquake Warning Systems based on historical seismicity records.
I managed large datasets of seismic records using supervised training and did many data cleaning, manipulation, preprocessing, and feature design.
Worked with Dr.Ji Hancheng at China University of Petroleum,Beijing.
My undergraudate thesis was "Genetic analysis of chert in Wumishan formation." I conducted Total Organic Carbon (TOC) Analysis for the hydrocarbon source rock samples from Wumishan formation.
G.P.A. 3.88/4, Top Graduates from competitive Honor Program
Introduces non-science majors to physical aspects (earthquakes, volcanoes, floods, tsunamis, mountains, plate tectonics) and historical aspects (formation of earth and life, dinosaurs, ice age, evolution of climate) in earth science. Presents information on earth resources, natural hazards, and development of natural landscapes. Focuses on humanistic issues; provides context for understanding environmental change.
Develops geologic background, concepts, and principles through study of selected national parks and monuments. Examines the geologic framework and history, modern geologic processes, and factors influencing the present day landscape for each park area.
Introduction to: crystallography; crystal optics; structure, composition, properties, stability and geological occurrences of minerals; and mineral identification.
Introduces Earth phenomena and processes. Includes minerals and rocks, continental drift, plate tectonics, rock deformation, igneous and sedimentary processes, geologic time, landscape evolution, internal structure and composition of the earth, groundwater, seismology and earthquakes, and formation of natural resources. Emphasizes the chemical and physical aspects of the Earth, and the basis for geological inference.
Integrated introduction to oceanography and marine geology and geophysics. Topics include ocean-basin formation and evolution (in the context of plate tectonics), ocean ecology, the hydrologic cycle, water chemistry, currents and waves, the interaction of oceans with climate, coastal hazards, resources, pollution, and the Law of the Sea. Course is oriented toward students not majoring in science.
Introduction to principles of rock deformation, stress, and strain; description and interpretation of geologic structures; study of methods for structural analysis; outline of geotectonic processes.
A bit more about me ...
Plants / Flower / Begonia
Growing Begonia as a hobby
Growing flowers is my newly developed skills over the Pandemic. It is super fun to watch them grow
I have varies flower plants like Begonia,Roses, Lilies etc Most of them actually survived the winter under my care!
Now my plan for flower planting is to have flowers at all seasons!
Hiking / Mississippi River / Fall
Hiking in the fall showing the Mississippi River
Hiking is one of my preferred way of vacation. I love to see the fall foliage in Michigan state. It is such an amazing beauty
Sometimes, the unpredictable weather could add more fun to it.
Food / Streetfood / Qingdao
Always available for food tryout !
Holding the belief that food is the simplest happiness within reach. I am always happy trying new food
Spicy food? Street food? Smelly but local food? Bring them on.
However, I am only loyal to Qingdao food taste and establish my rating based on it. :)
Address
1301 W, Green St., Urbana, U.S.A
Phone
+1779-232-3992
hongyux2@illinois.edu