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Earth Surface & Interior

NASA’s Earth Surface and Interior focus area (ESI) supports research and analysis of solid-Earth processes and properties from crust to core. The overarching goal of ESI is to use NASA’s unique capabilities and observational resources to better understand core, mantle, and lithospheric structure and dynamics, and interactions between these processes and Earth’s fluid envelopes.

ESI studies provide the basic understanding and data products needed to inform the assessment, mitigation, and forecasting of the natural hazards, including phenomena such as earthquakes, tsunamis, landslides, and volcanic eruptions. These investigations also exploit the time-variable signals associated with other natural and anthropogenic perturbations to the Earth system, including those associated with the production and management of natural resources.

Research Questions
Earth Surface & Interior addresses the following overarching questions, identified in the NASA Solid Earth Science Working Group (SESWG) report Living on a Restless Planet (2002):

  1. What is the nature of deformation at plate boundaries and what are the implications for earthquake hazards?
  2. How do tectonics and climate interact to shape the Earth’s surface and create natural hazards?
  3. What are the interactions among ice masses, oceans, and the solid Earth and their implications for sea level change?
  4. How do magmatic systems evolve and under what conditions do volcanoes erupt?
  5. What are the dynamics of the mantle and crust and how does the Earth’s surface respond?
  6. What are the dynamics of the Earth’s magnetic field and its interactions with the Earth system?

Space Geodesy Program

The Space Geodesy Program (SGP)was initiated in 2011 with the long-range goal of building, deploying, and operating a next generation NASA Space Geodetic Network (NSGN) of integrated, multi-technique space geodetic observing systems. This infrastructure enables the establishment and maintenance of a precise terrestrial reference frame that is foundational to many Earth missions and location-based observations.SGP produces observations that refine our knowledge of Earth’s shape, rotation, orientation, and gravity, advancing our understanding of the motion and rotation of tectonic plates, elastic properties of the crust and mantle, mantle-core interactions, solid Earth tides, and the effects of surface loading resulting from surface water, ground water, glaciers, and ice sheets. SGP is a partnership between Goddard Space Flight Center and the Jet Propulsion Laboratory, with participation from the Smithsonian Astrophysical Observatory and the University of Maryland.

Blog Posts

Track progress at the Kōkeʻe Park Geophysical Observatory (KPGO):

Associated Earth Science Division Missions, Instruments, and Data Sets

The table below lists all Earth missions that are relevant to the Earth Surface and Interior Focus Area in all phases.

Operating  missions include missions at the start of the Operations and Sustainment phase of their life-cycle.This phase marks the transition from system development and acquisition activities to primarily systems operations and sustainment activities. Missions under development are missions that are at the Final Design and Fabrication (Phase C) and System Assembly, Integration and Test, and Launch (Phase D) phases of their life-cycle. The primary activities in this category are developmental in nature, including acquisition contract execution. Phase C includes: the completion of final system design and fabrication of test and flight architecture; qualification testing; development of detailed integration plans and procedures; and test of components, assemblies, and subsystems. Phase D entails: system assembly, integration, and test (AI&T); verification/ certification; prelaunch activities; system launch; and completion of on orbit checkout or initial operations. Under study missions include missions that are at the pre-formulation and formulation stages of their life-cycle. Pre-formulation begins the process to define a viable and affordable concept for new NASA programs and projects, via concept studies. This step is followed by the formulation stage, which consists of two sequential phases, the Concept & Technology Development phase and the Preliminary Design & Technology Completion phase. The primary activities in these phases are to develop and define the project requirements and cost/schedule basis, and to design a plan for implementation (including an acquisition strategy, contractor selection, and long-lead procurement). Past missions are missions that have reached the Closeout phase, during which project systems are taken out of service and safely disposed, although scientific and other analyses might still continue under project funding.

Satellite Missions LAGEOS 1 & 2
Landsat 7
LDCM/ Landsat 8
Suborbital Investigations:
Ground-based Observations
Space Geodesy Project (SGP)
Suborbital Investigations:
Aircraft Missions
Satellite Missions ICESat-2
GRACE Follow-On
Satellite Missions Jason-3
Satellite Missions  SRTM


ROSES Solicitations

Solicited program elements relevant to Earth Surface & Interior are publicized through Research Opportunities in Space and Earth Sciences (ROSES) NASA Research Announcements (NRAs) on the NASA Solicitation and Proposal Integrated Review and Evaluation System (NSPIRES) website.  Past, open, and future solicitations can be searched and viewed at NSPIRES.

Access the 2015 Earth Surface and Interior solicitation here.


Distributed Active Archive Centers (DAACs)

Alaska Satellite Facility (ASF)

  • Distributes synthetic aperture radar imagery and products

Crustal Dynamics Data Information System (CDDIS)

  • Distributes global geodetic data

Earth Resource Observation and Science Center (EROS)

  • Distributes imagery and products from NASA’s Earth Observing System.


Relevant Sites
Topics relevant to Earth Surface & Interior are also being pursued through the following:

NASA Applied Sciences Programs

NASA Center Organizations

Interagency / International Activities


Program Managers

Benjamin Phillips
Earth Surface & Interior Program
Focus Area Lead

Craig Dobson
Earth Surface & Interior Program
Space Archaeology Program
Geodetic Imaging Program

Gerald Bawden
Earth Surface & Interior Program
Terrestrial Hydrology Program