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Of­fice: GEO buil­ding, room 4590
Pho­ne: +49 421 218 - 65378
E-mail: ni­ko­las.stan­ge@uni-bre­
Other web­page(s): Niko's faculty web page

PhD Pro­ject


Seis­mic in­ver­si­on for the as­sess­ment of the phy­si­cal pro­per­ties of the near sur­face – Theo­re­ti­cal con­side­ra­ti­ons and prac­tical im­ple­men­ta­ti­on


It has al­ways been one of the grea­test chal­len­ges for ma­ri­ne re­se­ar­chers to gain spa­ti­al in­for­ma­ti­on about the seaf­loor and es­pe­cial­ly the sub-seaf­loor. The seis­mic re­flec­tion me­thod pro­o­fed to be a re­lia­ble tech­ni­que to de­li­ver struc­tu­ral in­for­ma­ti­on of the sub-seaf­loor. Star­ting in the 1980s, it be­ca­me fea­si­ble not only to gain struc­tu­ral but also phy­si­cal in­for­ma­ti­on de­ri­ving phy­si­cal pro­per­ties by me­ans of seis­mic in­ver­si­on. Tho­se in­ver­si­on me­thods have been de­ve­l­o­ped for hy­dro­c­ar­bon ex­plo­ra­ti­on. In con­trast to the suc­cess­ful in­ver­si­ons for hard rocks and deep tar­gets, the­re are only very few suc­cess­ful ex­am­ples of in­ver­si­on for the soft se­di­ments in the up­per­most hund­reds of me­ters of the sub-seaf­loor. Ne­ver­the­l­ess, this shal­low part of the sub-seaf­loor being com­mon­ly de­scri­bed as the near sur­face is of gre­at im­port­an­ce due to its key role in geo-bio­s­phe­re in­ter­ac­tions, un­der­stan­ding Qua­tern­ary geo­lo­gy or hu­man im­pact and for off­shore con­struc­tions. My PhD Pro­ject aims to es­ta­blish in­ver­si­on me­thods for near sur­face high re­so­lu­ti­on seis­mics at the Uni­ver­si­ty of Bre­men and for the off­shore wind in­dus­try. As a re­sult of this pro­ject, we will be able to pro­du­ce bet­ter seis­mic images of the sub-seaf­loor and images con­tai­ning both struc­tu­ral and phy­si­cal in­for­ma­ti­on. The near sur­face seis­mic in­ver­si­on al­go­rithms will be made avail­able for aca­de­mia.

The three main ob­jec­tives of my the­sis are (1) to op­ti­mi­ze the ac­qui­si­ti­on of ma­ri­ne near sur­face seis­mic data for in­ver­si­on, (2) to im­ple­ment esti­ma­ti­on me­thods for the low fre­quen­cy trends being in­vi­si­ble to the seis­mic re­cord and (3) to eva­lua­te and im­ple­ment in­ver­si­on me­thods.

The de­scri­bed PhD pro­ject is em­bed­ded in the Syn­Co­re pro­ject being a co­ope­ra­ti­on of the Fraun­ho­fer IWES, Fraun­ho­fer ITWM, In­no­gy SE, GuD Con­sult and the Uni­ver­si­ty of Bre­men. The Syn­Co­re pro­ject is fun­ded by the Fe­deral Mi­nis­try for Eco­no­mic Af­fairs and En­er­gy on the ba­sis of a de­ci­si­on by the Ger­man Bun­des­tag to fos­ter the de­ve­lop­ment of sustainable off­shore en­er­gy pro­duc­tion.


The­sis Com­mit­tee

Prof. Dr. Volk­hard Spiess Uni­ver­si­ty of Bre­men
Prof. Dr. Tho­mas Boh­len Karls­ru­her In­sti­tut für Tech­no­lo­gie (KIT)
Dr. Han­no Keil Uni­ver­si­ty of Bre­men
Dr. Ste­fan Wen­au Fraun­ho­fer In­sti­tu­te for Wind En­er­gy Sys­tems (IWES), Bre­mer­ha­ven

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